Energy accumulator with functions of leather bag damage monitoring and automatic standby group switching

Abstract

The invention provides an energy accumulator with leather bag damage monitoring and automatic standby group switching functions, and relates to the technical field of heat supply adjusting equipment.The energy accumulator comprises a frame, energy accumulator bodies, a pipeline assembly, a valve switching assembly, a monitoring mechanism and a controller, the frame is fixedly provided with the two energy accumulator bodies, the energy accumulator bodies are fixedly communicated through the pipeline assembly, and the pipeline assembly is fixedly connected with the monitoring mechanism; a valve switching assembly is fixedly installed on the pipeline assembly, a monitoring mechanism is fixedly arranged in the energy accumulator body, and the monitoring mechanism and the valve switching assembly are electrically connected with a controller. A main energy accumulator and an auxiliary energy accumulator of an energy accumulator body are arranged; through the pipeline assembly and the valve switching assembly, working switching of the main energy accumulator and the auxiliary energy accumulator can be rapidly achieved, the controller achieves instant switching of the working states of the main energy accumulator and the auxiliary energy accumulator through accurate control of an electromagnetic valve, system shutdown caused by leather bag damage is avoided, and therefore precious working time is saved.

Description

Technical Field

[0001] The invention relates to the technical field of heat regulating equipment, and in particular to an accumulator with bladder damage monitoring and automatic switching of a standby group. Background Art

[0002] In the generator set, each main steam valve, regulating valve, and fuel valve of the steam turbine and gas turbine has its own hydraulic control oil system. The hydraulic control oil station is equipped with a bladder accumulator, which is filled with nitrogen at a predetermined pressure. When the hydraulic oil pressure is lower than the internal pressure of the accumulator due to a fault, the oil in the bladder accumulator flows to the external system under the action of high-pressure nitrogen to stabilize the system pressure. When the hydraulic oil pressure suddenly increases, the bladder accumulator can also absorb this part of the energy to stabilize the system pressure.

[0003] When the bladder accumulator is running for a long time, the bladder may be damaged due to repeated stretching of the bladder, impact of hydraulic oil, friction with the inner wall of the accumulator, or aging of the bladder material, causing hydraulic oil leakage, unstable hydraulic oil pressure, and control failure of various oil-operated valves, endangering the safe operation of the unit.

[0004] In most cases, even if the accumulator bladder is damaged, it is difficult for operators to judge by observing the oil pump pressure curve, resulting in the inability to replace the bladder in time, reducing equipment reliability. Therefore, operators are committed to developing an accumulator with bladder damage monitoring and automatic switching of spare groups. Summary of the invention

[0005] The present invention provides an accumulator with bladder damage monitoring and automatic switching of a spare group, which is used to solve at least one of the technical problems raised by the above background technology.

[0006] In order to solve the above technical problems, the present invention provides an accumulator with bladder damage monitoring and automatic switching of a backup group, comprising: a frame, an accumulator body, a pipeline assembly, a valve switching assembly, a monitoring mechanism and a controller, two groups of accumulator bodies are fixedly provided on the frame, the accumulator bodies are fixedly connected through a pipeline assembly, a valve switching assembly is fixedly installed on the pipeline assembly, a monitoring mechanism is fixedly provided inside the accumulator body, and the monitoring mechanism and the valve switching assembly are electrically connected to the controller.

[0007] Preferably, a main accumulator and an auxiliary accumulator are fixedly installed at left and right ends of the frame, the main accumulator and the auxiliary accumulator have the same internal structure, the main accumulator includes a tank body, the tank body is fixedly installed at the left end of the frame, a leather bag is fixedly provided inside the top of the tank body, a horizontal partition is fixedly connected to the bottom of the tank body, a sealable wire pipe is symmetrically provided on the top of the tank body, a battery and a wireless transmission module are fixedly installed on the frame, and the battery and the wireless transmission module are electrically connected to the controller.

[0008] Preferably, the pipeline assembly includes: a main pipe 1, a first vertical pipe and a second vertical pipe, the top of the main accumulator is fixedly connected to the first vertical pipe, the top of the auxiliary accumulator is fixedly connected to the second vertical pipe, the tops of the first vertical pipe and the second vertical pipe are fixedly connected to a horizontal main pipe 1, and the first vertical pipe and the second vertical pipe are fixedly connected to the bladders in the main accumulator and the auxiliary accumulator respectively.

[0009] Preferably, the valve switching assembly includes: solenoid valve one, solenoid valve two and solenoid valve three; solenoid valve one is fixedly installed on the first vertical pipe, solenoid valve two is fixedly installed on the second vertical pipe, two solenoid valves three are symmetrically fixedly installed on the left and right ends of the horizontal main pipe one, and the bottom ends of the main accumulator and the auxiliary accumulator are fixedly connected to a solenoid valve four, and the solenoid valve one, solenoid valve two, solenoid valve three and solenoid valve four are electrically connected to the controller respectively.

[0010] Preferably, the monitoring mechanism includes: a first detection mechanism, an angle detection mechanism, a second detection mechanism, a third detection mechanism and a liquid level proximity switch, two groups of first detection mechanisms are fixedly provided on the left and right sides of the top of the tank body, two groups of angle detection mechanisms are fixedly connected to the left and right inner walls of the tank body below the first detection mechanism, several groups of second detection mechanisms are provided around the middle inner wall of the tank body, two groups of third detection mechanisms are fixedly provided on the left and right bottom of the tank body, and a liquid level proximity switch is fixedly installed in the center of the partition, and the liquid level proximity switch passes through the partition from top to bottom.

[0011] Preferably, the first detection mechanism and the third detection mechanism have similar structures, and the first detection mechanism on the left side comprises: a detection shell, which is fixedly connected to the top of the left inner wall of the tank body, and the detection shell is slidably connected to a sliding rod near the center side of the tank body, and the left end of the sliding rod is fixedly connected to a baffle plate 1, and a distance sensor 1 is provided on the left wall of the tank body of the baffle plate 1, and a spring 1 is provided on the outer sleeve of the sliding rod, and the right end of the spring 1 is pressed against a mounting frame, and the mounting frame is rotatably connected to a plurality of guide rollers in the front and rear directions near the center side of the tank body; the mounting frame in the third detection mechanism is C-shaped.

[0012] Preferably, the angle detection mechanism includes: a fixed rod, a horizontal fixed rod fixedly connected to the inner wall of the top of the tank body, the fixed rod is rotatably connected to the vertical plate near the center end of the tank body, a spring is fixedly connected between the top of the vertical plate and the inner wall of the tank body, an angle sensor is fixedly installed at the connection between the vertical plate and the fixed rod, and the angle sensor is electrically connected to the controller.

[0013] Preferably, the second detection mechanism on the left side includes: a mounting plate, two mounting plates are fixedly installed at intervals on the upper and lower inner wall of the left side of the tank body, a vertical sliding rod is fixedly connected between the mounting plates, the top of the sliding rod is connected to a sliding block for sliding up and down movement, a spring three is provided between the sliding block and the sliding rod jacket below, the sliding block is fixedly connected to an arc plate near the center end of the tank body, the sliding block is fixedly installed away from a light source emitter, a vertical grating ruler is fixedly installed on the left inner wall of the tank body, the light source emitter is aligned with the grating ruler, and the grating ruler is electrically connected to the controller.

[0014] Preferably, the intelligent sensor detection module includes:

[0015] Density sensor unit, used for the density of the oil fluid inside the main accumulator and the auxiliary accumulator;

[0016] A flow sensor unit is used to detect the flow rate of the oil fluid entering and exiting the tank body of the solenoid valve 4 and is installed inside the solenoid valve 4;

[0017] A flow rate sensor unit, used for detecting an average flow rate of the oil fluid at the valve port opening of the solenoid valve 4;

[0018] The temperature sensor unit is used to detect the working temperature of the main accumulator and the auxiliary accumulator and is installed on the inner wall of the tank;

[0019] An air pressure sensor unit is used to detect the inflation pressure value inside the bladder;

[0020] Alarm, used to alarm in case of abnormal situation;

[0021] The first calculation unit is used to calculate the deviation between the axial hydraulic force of the accumulator and the theoretical hydraulic force;

[0022] a second calculation unit, which calculates the evaluation value of the bladder inflation volume change during the main accumulator detection period based on the first calculation unit;

[0023] a control unit, used for collecting and processing the data of each sensor, the control unit being electrically connected to the first calculation unit, the second calculation unit, the density sensor unit, the flow sensor unit, the flow velocity sensor unit, the flow velocity sensor unit, the temperature sensor unit, the air pressure sensor unit and the alarm;

[0024] The comparison and judgment unit is used to compare and judge the normal and abnormal conditions of the change state of the main accumulator's charging volume.

[0025] Preferably, the first calculation unit calculates based on the following formula 1:

[0026] Among them: F t is the deviation between the accumulator axial hydraulic force and the theoretical hydraulic force, ρ is the density of the oil fluid detected by the density sensor unit; L is the flow length of the oil fluid in the valve chamber of the solenoid valve 4, Qt is the flow rate of the solenoid valve 4 at time t detected by the flow sensor unit, Q0 is the flow rate of the solenoid valve 4 at time t detected by the flow sensor unit o The flow rate at time t is the end time of energy storage, t o is the initial moment of energy storage, Q is the theoretical flow rate of the oil fluid passing through the valve port, v is the average flow rate of the oil at the valve port opening of the solenoid valve 4 detected by the flow rate sensor unit, cos is the cosine function, α is the angle between the oil flow direction and the valve plane of the solenoid valve 4, and the value is 70°;

[0027] The second calculation unit calculates the following formula based on the result of the first calculation unit:

[0028] Where: V t T is the estimated value of the change in the bladder filling volume of the main accumulator during the period t-t0, t is the temperature inside the main accumulator at time t, T0 is the temperature value of the main accumulator at the initial time, T2 is the maximum operating temperature of the main accumulator detected by the temperature sensor, T1 is the minimum operating temperature detected by the temperature sensor, P A P2 is the maximum working pressure of the main accumulator bladder, P1 is the minimum working pressure of the main accumulator bladder, P0 is the ideal state filling pressure of the main accumulator bladder, V OUT is the volume of oil to be delivered from the main accumulator; V2 is the maximum volume of oil in the main accumulator, V1 is the minimum volume of oil in the main accumulator, ln is a logarithmic function, and e is a natural constant with a value of 2.72;

[0029] The comparison judgment unit performs comparison, when V t When V is less than or equal to zero, the volume of the air bag changes normally. t When it is greater than zero, the control unit controls the alarm to sound an alarm, and promptly stops the main accumulator from working to repair and replace the bladder.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides installation space for the accumulator body, the pipeline assembly, and the valve switching assembly through the frame, and is arranged through the main accumulator and the auxiliary accumulator of the accumulator body. It is beneficial to directly switch to another accumulator when the accumulator bladder leaks, thereby reducing the waste of working time; through the pipeline assembly and the valve switching assembly, it is beneficial to quickly realize the switching of the main accumulator and the auxiliary accumulator, and through the multiple detection mechanisms of the monitoring mechanism to verify whether the bladder is damaged, the bladder damage state can be more accurately judged. When the bladder of the main accumulator is damaged, the controller realizes the instant conversion of the working state between the main accumulator and the auxiliary accumulator through the precise control of the solenoid valve, avoiding the system shutdown caused by the bladder damage, thereby saving valuable working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a front view schematic diagram of the accumulator with bladder damage monitoring and automatic switching of the standby group of the present invention;

[0033] Figure 2 is a top cross-sectional schematic diagram of the main accumulator of the present invention;

[0034] Figure 3 The present invention Figure 1 A magnified view of the local structure at center A;

[0035] Figure 4 This invention Figure 1 A magnified view of the local structure at B in the middle;

[0036] Figure 5 This invention Figure 1 Enlarged view of the local structure at point C in the middle.

[0037] Reference numerals:

[0038] 1. Wireless transmission module; 2. Frame; 3. Accumulator body; 301. Auxiliary accumulator; 4. Pipeline assembly; 401. Main pipe 1; 402. First vertical pipe; 403. Second vertical pipe; 5. Valve switching assembly; 501. Solenoid valve 1; 502. Solenoid valve 2; 503. Solenoid valve 3; 504. Solenoid valve 4; 6. Monitoring mechanism; 601. First detection mechanism; 611. Detection housing; 612. Sliding rod; 613. Baffle 1; 614. Distance sensor 1; 615. Spring 1; 616. Mounting frame; 617. Guide Roller; 602, angle detection mechanism; 621, fixed rod; 622, vertical plate; 623, spring two; 624, angle sensor; 603, second detection mechanism; 631, mounting plate; 632, slide bar; 633, slide block; 634, spring three; 635, arc plate; 636, light source emitter; 637, grating ruler; 604, third detection mechanism; 605, proximity switch; 7, controller; 8, main accumulator; 801, tank body; 802, bladder; 803, partition; 804, wire tube; 805, battery. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides the following embodiments

[0043] Embodiment 1, the embodiment of the present invention provides an accumulator with a bladder 802 damage monitoring and automatic switching of a standby group, such as Figure 1 As shown, it includes: a frame 2, an accumulator body 3, a pipeline assembly 4, a valve switching assembly 5, a monitoring mechanism 6 and a controller 7. Two groups of accumulator bodies 3 are fixedly arranged on the frame 2. The accumulator bodies 3 are fixedly connected through the pipeline assembly 4. The valve switching assembly 5 is fixedly installed on the pipeline assembly 4. A monitoring mechanism 6 is fixedly arranged inside the accumulator body 3. The monitoring mechanism 6 and the valve switching assembly 5 are electrically connected to the controller 7.

[0044] The working principle and beneficial effects of the above technical solution are as follows: the present invention provides installation space for the accumulator body 3, the pipeline assembly 4, and the valve switching assembly 5 through the frame 2, and is arranged through the main accumulator 8 and the auxiliary accumulator 301 of the accumulator body 3. It is beneficial to directly switch to another accumulator when the accumulator bladder 802 leaks, reducing the waste of working time; through the pipeline assembly 4 and the valve switching assembly 5, it is beneficial to quickly realize the switching of the main accumulator 8 and the auxiliary accumulator 301, and through the multiple detection mechanisms of the monitoring mechanism 6 to verify whether the monitoring bladder 802 is damaged, the damage state of the bladder 802 can be more accurately judged.

[0045] Embodiment 2, on the basis of embodiment 1, as Figure 1-Figure 2 As shown, the main accumulator 8 and the auxiliary accumulator 301 are fixedly installed at the left and right ends of the frame 2. The main accumulator 8 and the auxiliary accumulator 301 have the same internal structure. The main accumulator 8 includes a tank body 801. The tank body 801 is fixedly installed on the left end of the frame 2. A leather bag 802 is fixedly provided on the top of the tank body 801. A horizontal partition 803 is fixedly connected to the bottom of the tank body 801. A sealable wire tube 804 is symmetrically provided on the top of the tank body 801. A battery 805 and a wireless transmission module 1 are fixedly installed on the frame 2. The battery 805 and the wireless transmission module 1 are electrically connected to the controller 7.

[0046] The pipeline assembly 4 includes: a main pipe 401, a first vertical pipe 402 and a second vertical pipe 403. The top of the main accumulator 8 is fixedly connected to the first vertical pipe 402, and the top of the auxiliary accumulator 301 is fixedly connected to the second vertical pipe 403. The tops of the first vertical pipe 402 and the second vertical pipe 403 are fixedly connected to the horizontal main pipe 401. The first vertical pipe 402 and the second vertical pipe 403 are fixedly connected to the bladder 802 in the main accumulator 8 and the auxiliary accumulator 301 respectively.

[0047] The valve switching assembly 5 includes: solenoid valve one 501, solenoid valve two 502 and solenoid valve three 503; the solenoid valve one 501 is fixedly installed on the first vertical pipe 402, the solenoid valve two 502 is fixedly installed on the second vertical pipe 403, two solenoid valves three 503 are symmetrically fixedly installed on the left and right ends of the horizontal main pipe one 401, and the bottom ends of the main accumulator 8 and the auxiliary accumulator 301 are fixedly connected to a solenoid valve four 504, and the solenoid valve one 501, the solenoid valve two 502, the solenoid valve three 503 and the solenoid valve four 504 are electrically connected to the controller 7 respectively.

[0048] The working principle and beneficial effects of the above technical solution are as follows: a liquid level proximity switch 605 is installed at the bottom of the accumulator, and a solenoid valve 4 504 is set at the oil inlet of the main / auxiliary accumulator. When the bladder 802 is damaged, the hydraulic oil will leak into the accumulator air chamber. After the liquid level proximity switch 605 detects the oil leakage, it determines that the bladder 802 is damaged and immediately sends an alarm signal to the controller 7. At the same time, the solenoid valve 2 502 and the solenoid valve 4 504 at the inlet end of the main accumulator 8 are closed, and the solenoid valve 3 503 and the solenoid valve 4 504 at the inlet end of the spare auxiliary accumulator 301 are opened, and the inert gas enters the bladder 802 of the auxiliary accumulator 301 through the main pipe 1 401 and the second vertical pipe 403, and the hydraulic oil system is transferred to normal equipment operation; the main solenoid valve 1 501 is used to control the amount of gas entering the accumulator, and at the same time, the gas flow of the main pipe 1 401 is stopped when the accumulator is replaced.

[0049] This embodiment further refines the design of the pipeline assembly 4 and the valve switching assembly 5, ensuring that the main accumulator 8 and the auxiliary accumulator 301 can be switched quickly and reliably. When the bladder 802 of the main accumulator 8 is damaged, the controller 7 realizes the instant conversion of the working state between the main accumulator 8 and the auxiliary accumulator 301 through the precise control of the solenoid valve, avoiding the system shutdown caused by the damage of the bladder 802, thereby saving valuable working time. In addition, the introduction of the battery 805 and the wireless transmission module 1 provides the system with stable power support and remote monitoring functions, making the maintenance and management of the system more convenient and efficient. In summary, this embodiment significantly improves the reliability and maintainability of the accumulator by optimizing the switching mechanism and adding intelligent elements.

[0050] Embodiment 3, on the basis of embodiment 1, as Figure 1-Figure 5 As shown, the monitoring mechanism 6 includes: a first detection mechanism 601, an angle detection mechanism 602, a second detection mechanism 603, a third detection mechanism 604 and a liquid level proximity switch 605, two groups of first detection mechanisms 601 are fixedly provided on the left and right sides of the top of the tank body 801, two groups of angle detection mechanisms 602 are fixedly connected to the left and right inner walls of the tank body 801 below the first detection mechanism 601, a plurality of groups of second detection mechanisms 603 are provided around the inner wall of the middle part of the tank body 801, two groups of third detection mechanisms 604 are fixedly provided on the left and right bottom of the tank body 801, and a liquid level proximity switch 605 is fixedly installed at the center of the partition 803, and the liquid level proximity switch 605 passes through the partition 803 from top to bottom.

[0051] The first detection mechanism 601 and the third detection mechanism 604 have similar structures. The first detection mechanism 601 on the left side comprises: a detection shell 611, the detection shell 611 is fixedly connected to the top of the left inner wall of the tank body 801, the detection shell 611 is slidably connected to a sliding rod 612 near the center side of the tank body 801, the left end of the sliding rod 612 is fixedly connected to a baffle 613, a distance sensor 614 is provided on the wall of the tank body 801 on the left side of the baffle 613, a spring 615 is provided on the outer sleeve of the sliding rod 612, the right end of the spring 615 is pressed against a mounting frame 616, and the mounting frame 616 is rotatably connected to a plurality of guide rollers 617 in the front and rear directions near the center side of the tank body 801; the mounting frame 616 in the third detection mechanism 604 is C-shaped.

[0052] The angle detection mechanism 602 includes: a fixed rod 621, the top inner wall of the tank body 801 is fixedly connected to the horizontal fixed rod 621, the fixed rod 621 is rotatably connected to the vertical plate 622 near the center end of the tank body 801, a spring 623 is fixedly connected between the top of the vertical plate 622 and the inner wall of the tank body 801, and an angle sensor 624 is fixedly installed at the connection between the vertical plate 622 and the fixed rod 621, and the angle sensor 624 is electrically connected to the controller 7.

[0053] The second detection mechanism 603 on the left side includes: a mounting plate 631, two mounting plates 631 are fixedly installed at intervals on the upper and lower inner wall of the left side of the tank body 801, a vertical slide bar 632 is fixedly connected between the mounting plates 631, the top of the slide bar 632 is slidably connected to a sliding block 633, the sliding block 633 and the outer sleeve of the lower slide bar 632 are provided with a spring three 634, the slider is fixedly connected to an arc plate 635 near the center end of the tank body 801, and a light source emitter 636 is fixedly installed away from the slider, a vertical grating ruler 637 is fixedly installed on the left inner wall of the tank body 801, the light source emitter 636 is aligned with the grating ruler 637, and the grating ruler 637 is electrically connected to the controller 7.

[0054] The working principle and beneficial effects of the above technical solution are as follows: the first detection mechanism 601 is responsible for detecting whether the top of the bladder 802 is damaged, the second detection mechanism 603 and the angle detection mechanism 602 are responsible for detecting whether the middle of the bladder 802 is damaged, and the third detection mechanism 604 is responsible for detecting whether the bottom of the bladder 802 is damaged when inflated;

[0055] When the first detection mechanism 601 and the third detection mechanism 604 are in operation, when the bladder 802 is inflated, the bladder 802 contacts the guide roller 617, and the guide roller 617 squeezes the sliding rod 612 toward the outside of the tank body 801. The mounting frame 616 pushes the baffle to slide under the action of the spring 615, and the distance sensor 614 records the distance value of the baffle 613 in real time. When the bladder 802 is damaged, the sliding of the baffle 613 changes, and the bladder 802 is damaged. The distance sensor 614 transmits the information to the controller 7; at the same time, the volume change of the bladder 802 will cause the angle detection mechanism 6 02 changes its angle, and the angle sensor 624 transmits the angle information to the controller 7; at the same time, the second detection mechanism 603 detects the damage state of the bladder 802 when there is no hydraulic oil in the tank 801 when the bladder 802 is filled with air. When the bladder 802 is damaged, the volume of the bladder 802 is reduced, so that the arc plates 635 on the left and right sides are in a tight state, so that the spring 2 623 pushes the slider, the light source emitter 636 and the arc plate 635 to slide synchronously. At this time, the grating ruler 637 transmits the slider movement information to the controller 7, and learns that the volume of the bladder 802 has changed and is damaged.

[0056] The monitoring mechanism 6 in this embodiment comprehensively and accurately monitors the damage state of the accumulator bladder 802 through multi-dimensional and multi-level detection means. The first detection mechanism 601, the angle detection mechanism 602, the second detection mechanism 603, the third detection mechanism 604 and the liquid level proximity switch 605 work together to capture the subtle changes in the damage of the bladder 802 from different angles and levels, thereby greatly improving the accuracy and reliability of monitoring. This all-round and multi-level monitoring mechanism provides a strong guarantee for the safe operation of the accumulator and effectively avoids system failures and safety hazards caused by the damage of the bladder 802.

[0057] Embodiment 4, based on embodiment 1, is further provided with an intelligent sensor detection module including:

[0058] Density sensor unit, used for the density of the oil fluid inside the main accumulator 8 and the auxiliary accumulator 301;

[0059] A flow sensor unit, used to detect the flow rate of the oil fluid entering and exiting the tank 801 through the solenoid valve 4504, installed inside the solenoid valve 4504;

[0060] A flow rate sensor unit, used to detect the average flow rate of the oil fluid at the valve port opening of the solenoid valve 2504;

[0061] A temperature sensor unit, used to detect the operating temperature of the main accumulator 8 and the auxiliary accumulator 301, installed on the inner wall of the tank 801;

[0062] The air pressure sensor unit is used to detect the inflation pressure value inside the bladder 802;

[0063] Alarm, used to alarm in case of abnormal situation;

[0064] The first calculation unit is used to calculate the deviation between the axial hydraulic force of the accumulator and the theoretical hydraulic force;

[0065] a second calculation unit, which calculates an evaluation value of a change in the inflation volume of the bladder 802 during a detection period of the main accumulator 8 based on the first calculation unit;

[0066] a control unit, used for collecting and processing the data of each sensor, the control unit being electrically connected to the first calculation unit, the second calculation unit, the density sensor unit, the flow sensor unit, the flow velocity sensor unit, the flow velocity sensor unit, the temperature sensor unit, the air pressure sensor unit and the alarm;

[0067] The comparison and judgment unit is used to compare and judge the normal and abnormal conditions of the change state of the gas-filled volume of the main accumulator 8.

[0068] The first calculation unit calculates based on the following formula 1:

[0069] Among them: F t is the deviation between the axial hydraulic force of the accumulator and the theoretical hydraulic force, ρ is the density of the oil fluid detected by the density sensor unit; L is the flow length of the oil fluid in the valve cavity of the solenoid valve 4504, Q t is the flow rate of the electromagnetic valve 4504 at time t detected by the flow sensor unit, and Q0 is the flow rate of the electromagnetic valve 4504 at time t detected by the flow sensor unit. o The flow rate at time t is the end time of energy storage, t o is the initial moment of energy storage, Q is the theoretical flow rate of the oil fluid passing through the valve port of the solenoid valve 4504, v is the average flow rate of the oil at the valve port opening of the solenoid valve 4504 detected by the flow rate sensor unit, cos is the cosine function, α is the angle between the oil flow direction and the valve plane of the solenoid valve 4504, and the value is 70°;

[0070] The second calculation unit calculates the following formula 2 based on the result of the first calculation unit:

[0071] Where: V t is the estimated value of the change in the bladder filling volume of the main accumulator during the period 8t-t0, T t is the temperature inside the main accumulator 8 at time t, T0 is the temperature value of the main accumulator 8 at the initial time, T2 is the maximum operating temperature of the main accumulator 8 detected by the temperature sensor, T1 is the minimum operating temperature detected by the temperature sensor, P Ais the measured inflation pressure of the main accumulator 8 bladder 802, P2 is the maximum working pressure of the main accumulator 8 bladder 802, P1 is the minimum working pressure of the main accumulator 8 bladder 802, P0 is the ideal inflation pressure of the main accumulator 8 bladder 802, V OUT is the volume of oil to be delivered from the main accumulator 8; V2 is the maximum volume of oil in the main accumulator 8, V1 is the minimum volume of oil in the main accumulator 8, ln is a logarithmic function, and e is a natural constant with a value of 2.72;

[0072] The comparison judgment unit performs comparison, when V t When V is less than or equal to zero, the volume of the air-filled bag 802 changes normally. t When it is greater than zero, the control unit controls the alarm to sound an alarm, and promptly stops the main accumulator 8 from working to repair and replace the bladder 802.

[0073] The working principle and beneficial effects of the above technical solution are as follows: when the intelligent sensor detection module is working: in the energy storage and energy release stage of the main accumulator 8, the density sensor unit detects the density of the oil fluid inside the main accumulator 8 and the auxiliary accumulator 301; at the same time, the flow sensor unit starts to detect the flow of the oil fluid in and out of the tank body 801 of the electromagnetic valve four 504, and is installed on the inner side of the electromagnetic valve four 504; the flow rate sensor unit starts to detect the average flow rate of the oil fluid at the valve opening of the electromagnetic valve four 504 in real time; the temperature sensor unit starts to detect the working temperature of the main accumulator 8 and the auxiliary accumulator 301, and the air pressure sensor unit transmits the inflation pressure value inside the detection bladder 802 to the control unit; at the same time, the control unit receives various detection data from the density sensor unit, the flow sensor unit, the flow rate sensor unit, the flow rate sensor unit, and the temperature sensor unit, and the control unit controls the first calculation unit, and the second calculation unit runs at the same time; finally, through the comparison and judgment unit, the normal and abnormal conditions of the inflation volume change state of the main accumulator 8 are compared and judged;

[0074] This embodiment adds an intelligent sensor detection module on the original basis, and realizes real-time monitoring and accurate analysis of the internal state of the accumulator by integrating a variety of high-precision sensors. These sensors can capture changes in key parameters such as density, flow, flow rate, temperature of the oil fluid and the internal inflation pressure of the bladder 802, and evaluate and predict the operating state of the accumulator through the calculation module. When an abnormal situation is detected, the system will immediately trigger the alarm mechanism and take corresponding measures through the control unit to ensure the safe and stable operation of the system. In addition, the intelligent sensor detection module also has data recording and remote transmission functions, which provides strong support for the maintenance and management of the system. In summary, this embodiment realizes intelligent monitoring and management of the operating state of the accumulator by introducing the intelligent sensor detection module, which significantly improves the reliability and intelligence level of the system.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An accumulator with bladder damage monitoring and automatic switching of spare groups, characterized in that: include: A frame (2), an accumulator body (3), a pipeline assembly (4), a valve switching assembly (5), a monitoring mechanism (6) and a controller (7); two groups of accumulator bodies (3) are fixedly arranged on the frame (2); the accumulator bodies (3) are fixedly connected via a pipeline assembly (4); a valve switching assembly (5) is fixedly mounted on the pipeline assembly (4); a monitoring mechanism (6) is fixedly arranged inside the accumulator body (3); and the monitoring mechanism (6) and the valve switching assembly (5) are electrically connected to the controller (7).

2. An accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 1, characterized in that: include: The frame (2) is fixedly provided with a main accumulator (8) and an auxiliary accumulator (301) at both left and right ends. The main accumulator (8) and the auxiliary accumulator (301) have the same internal structure. The main accumulator (8) comprises a tank body (801). The left end of the frame (2) is fixedly provided with a tank body (801). A bladder (802) is fixedly provided inside the top of the tank body (801). A horizontal partition (803) is fixedly connected to the bottom of the tank body (801). A sealable wire tube (804) is symmetrically provided on the top of the tank body (801). A storage battery (805) and a wireless transmission module (1) are fixedly provided on the frame (2). The storage battery (805) and the wireless transmission module (1) are electrically connected to a controller (7).

3. An accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 2, characterized in that: The pipeline assembly (4) comprises: a main pipe (401), a first vertical pipe (402) and a second vertical pipe (403); the top of the main accumulator (8) is fixedly connected to the first vertical pipe (402); the top of the auxiliary accumulator (301) is fixedly connected to the second vertical pipe (403); the tops of the first vertical pipe (402) and the second vertical pipe (403) are fixedly connected to the transverse main pipe (401); the first vertical pipe (402) and the second vertical pipe (403) are fixedly connected to the bladders (802) in the main accumulator (8) and the auxiliary accumulator (301), respectively.

4. The accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 3 is characterized in that: The valve switching assembly (5) comprises: a solenoid valve 1 (501), a solenoid valve 2 (502) and a solenoid valve 3 (503); the solenoid valve 1 (501) is fixedly installed on the first vertical pipe (402), the solenoid valve 2 (502) is fixedly installed on the second vertical pipe (403), two solenoid valves 3 (503) are symmetrically fixedly installed on the left and right ends of the horizontal main pipe 1 (401), the bottom ends of the main accumulator (8) and the auxiliary accumulator (301) are fixedly connected to a solenoid valve 4 (504), and the solenoid valve 1 (501), the solenoid valve 2 (502), the solenoid valve 3 (503) and the solenoid valve 4 (504) are respectively electrically connected to the controller (7).

5. The accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 3 is characterized in that: The monitoring mechanism (6) comprises: a first detection mechanism (601), an angle detection mechanism (602), a second detection mechanism (603), a third detection mechanism (604) and a liquid level proximity switch (605); two groups of first detection mechanisms (601) are fixedly arranged on the left and right sides of the top of the tank body (801); the left and right inner walls of the tank body (801) below the first detection mechanism (601) are fixedly connected to the two groups of angle detection mechanisms (602); a plurality of groups of second detection mechanisms (603) are arranged around the inner wall of the middle part of the tank body (801); two groups of third detection mechanisms (604) are fixedly arranged on the left and right sides of the bottom of the tank body (801); a liquid level proximity switch (605) is fixedly installed at the center of the partition (803); and the liquid level proximity switch (605) passes through the partition (803) from top to bottom.

6. The accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 2 is characterized in that: The first detection mechanism (601) and the third detection mechanism (604) are similar in structure. The first detection mechanism (601) on the left side comprises: a detection shell (611), the detection shell (611) is fixedly connected to the top of the left inner wall of the tank body (801), the detection shell (611) is slidably connected to a sliding rod (612) near the center of the tank body (801), the left end of the sliding rod (612) is fixedly connected to a baffle plate 1 (613), a distance sensor 1 (614) is provided on the wall of the tank body (801) on the left side of the baffle plate 1 (613), a spring 1 (615) is provided on the outer sleeve of the sliding rod (612), the right end of the spring 1 (615) is pressed against a mounting frame (616), and the mounting frame (616) is rotatably connected to a plurality of guide rollers (617) in the front and rear directions near the center of the tank body (801); the mounting frame (616) in the third detection mechanism (604) is C-shaped.

7. An accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 6, characterized in that: The angle detection mechanism (602) comprises: a fixed rod (621), the inner wall at the top of the tank body (801) is fixedly connected to the horizontal fixed rod (621), the fixed rod (621) is rotatably connected to the vertical plate (622) near the center end of the tank body (801), a second spring (623) is fixedly connected between the top of the vertical plate (622) and the inner wall of the tank body (801), an angle sensor (624) is fixedly installed at the connection between the vertical plate (622) and the fixed rod (621), and the angle sensor (624) is electrically connected to the controller (7).

8. The accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 6 is characterized in that: The second detection mechanism (603) on the left side comprises: a mounting plate (631), two mounting plates (631) are fixedly mounted on the left inner wall of the tank body (801) at intervals, a vertical sliding rod (632) is fixedly connected between the mounting plates (631), the top of the sliding rod (632) is slidably connected to a sliding block (633) up and down, a spring three (634) is provided between the sliding block (633) and the outer sleeve of the sliding rod (632) below, the sliding block is fixedly connected to an arc plate (635) near the center end of the sliding block of the tank body (801), and a light source emitter (636) is fixedly mounted away from the sliding block, a vertical grating ruler (637) is fixedly mounted on the left inner wall of the tank body (801), the light source emitter (636) is aligned with the grating ruler (637), and the grating ruler (637) is electrically connected to the controller (7).

9. The accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 2 is characterized in that: The intelligent sensor detection module includes: A density sensor unit for measuring the density of the oil fluid inside the main accumulator (8) and the auxiliary accumulator (301); A flow sensor unit, used for detecting the flow rate of the oil fluid entering and exiting the tank body (801) through the solenoid valve four (504), and installed inside the solenoid valve four (504); A flow rate sensor unit, used to detect the average flow rate of the oil fluid at the valve port opening of the solenoid valve four (504); A temperature sensor unit, used for detecting the operating temperature of the main accumulator (8) and the auxiliary accumulator (301), installed on the inner wall of the tank body (801); An air pressure sensor unit, used to detect the inflation pressure value inside the bladder (802); Alarm, used to alarm in case of abnormal situation; The first calculation unit is used to calculate the deviation between the axial hydraulic force of the accumulator and the theoretical hydraulic force; A second calculation unit, which calculates an evaluation value of a change in the inflation volume of a bladder (802) during a detection period of the main accumulator (8) based on the first calculation unit; a control unit, used for collecting and processing the data of each sensor, the control unit being electrically connected to the first calculation unit, the second calculation unit, the density sensor unit, the flow sensor unit, the flow velocity sensor unit, the flow velocity sensor unit, the temperature sensor unit, the air pressure sensor unit and the alarm; The comparison and judgment unit is used for comparing and judging the normal and abnormal conditions of the change state of the gas-filled volume of the main accumulator (8).

10. An accumulator with bladder damage monitoring and automatic switching of backup groups according to claim 9, characterized in that: include: The first calculation unit calculates based on the following formula 1: Among them: F t is the deviation between the axial hydraulic force of the accumulator and the theoretical hydraulic force, ρ is the density of the oil fluid detected by the density sensor unit; L is the flow length of the oil fluid in the valve chamber of the solenoid valve four (504), Q t is the flow rate of the electromagnetic valve four (504) at time t detected by the flow sensor unit, and Q0 is the flow rate of the electromagnetic valve four (504) at time t detected by the flow sensor unit. o The flow rate at time t is the end time of energy storage, t o is the initial moment of energy storage, Q is the theoretical flow rate of the oil fluid passing through the valve port of the solenoid valve four (504), v is the average flow rate of the oil at the valve port opening of the solenoid valve four (504) detected by the flow rate sensor unit, cos is the cosine function, α is the angle between the oil flow direction and the valve plane of the solenoid valve four (504), and the value is 70°; The second calculation unit substitutes the result of the first calculation unit into the following formula 2 for calculation: Where: V t is the estimated value of the change in the air filling volume of the main accumulator (8) during the time period t-t0, T t is the temperature inside the main accumulator (8) at time t, T0 is the temperature value of the main accumulator (8) at the initial time, T2 is the maximum operating temperature of the main accumulator (8) detected by the temperature sensor, T1 is the minimum operating temperature detected by the temperature sensor, P A is the measured inflation pressure of the bladder (802) of the main accumulator (8), P2 is the maximum working pressure of the bladder (802) of the main accumulator (8), P1 is the minimum working pressure of the bladder (802) of the main accumulator (8), P0 is the ideal inflation pressure of the bladder (802) of the main accumulator (8), V OUT is the volume of oil to be delivered from the main accumulator (8); V2 is the maximum volume of oil in the main accumulator (8), V1 is the minimum volume of oil in the main accumulator (8), ln is a logarithmic function, and e is a natural constant with a value of 2.72; The comparison judgment unit performs comparison, when V t When V is less than or equal to zero, the volume of the air-filled bladder (802) changes normally. t When it is greater than zero, the control unit controls the alarm to sound an alarm, and promptly stops the main accumulator (8) from working to perform maintenance and replace the bladder (802).

Images