CN219758697U - Hydraulic control circuit - Google Patents
Hydraulic control circuit Download PDFInfo
- Publication number
- CN219758697U CN219758697U CN202321325849.7U CN202321325849U CN219758697U CN 219758697 U CN219758697 U CN 219758697U CN 202321325849 U CN202321325849 U CN 202321325849U CN 219758697 U CN219758697 U CN 219758697U
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- oil
- electrically connected
- hydraulic
- controller
- control circuit
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- 239000007788 liquid Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 45
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a hydraulic control circuit, a hydraulic system comprises a hydraulic pump, a hydraulic pump motor, an oil tank, an oil inlet pipe and an oil return pipe, wherein the hydraulic control circuit comprises: the device comprises a circuit breaker, a transformer, a switching power supply, a control relay, an alternating current contactor and a controller, wherein one end of the circuit breaker is electrically connected with a power grid, and the other end of the circuit breaker is electrically connected with a hydraulic pump motor through a contact of the alternating current contactor; the primary side of the transformer is electrically connected with a power grid, and the secondary side of the transformer is electrically connected with the alternating current contactor through the contact of the control relay; one end of the switching power supply is electrically connected with the secondary side of the transformer, and the other end of the switching power supply is electrically connected with the controller; and the output end of the controller is connected with the control relay. The hydraulic system control device is specially used for controlling the hydraulic system for sinking the barrel type foundation structure, and ensures hydraulic stability.
Description
Technical Field
The present utility model relates to a hydraulic control circuit.
Background
The barrel-type foundation structure is a novel port engineering structure, can be used for construction of muddy coast breakwaters, shore protection and wharf shore connection projects, and has the advantages of no need of excavation and filling treatment of soft soil foundations, no need of a large amount of sand and stones, small influence on the environment, low construction cost, short construction period, controllable quality and the like. The bucket foundation structure sinking construction is based on bottom sealing water with certain thickness at the bottom of a bucket body, an air cavity with certain air pressure is formed between the bottom sealing water and a lower bucket top plate, the sum of air buoyancy formed by compression drainage of the air cavity and buoyancy generated by the wall of the bottom sealing bucket is equal to the gravity of soil body, the bucket body is in a relatively balanced state when the bucket body is in accordance with the floating stability requirement of the bucket body, the bucket foundation structure sinking is controlled by opening an exhaust valve, a drain valve, a vacuum valve and the like to release air in the bucket and water in the drain bucket, a cavity is formed in the bucket, negative pressure is formed in the cavity, and the bucket body can sink under the action of the negative pressure. The on-off of the existing drainage pipeline is controlled by a hydraulic valve, so that the hydraulic system is required to provide stable pressure to provide stable driving force for the hydraulic valve. As shown in fig. 2, the conventional hydraulic system comprises a hydraulic pump 101, a hydraulic pump motor 102, an oil tank 103, an oil inlet pipe 104, an oil return pipe 105 and a hydraulic valve, wherein the hydraulic pump motor 102 rotates to drive a piston of the hydraulic pump 101 to move, so that oil in the oil tank 103 is discharged into the oil inlet pipe 104, a certain pressure is generated in the oil inlet pipe 104, and a power source is provided for the operation of the hydraulic valve.
Disclosure of Invention
The utility model aims to provide a hydraulic control circuit which is specially used for controlling a hydraulic system for sinking a barrel type foundation structure and ensures hydraulic stability.
The technical scheme for achieving the purpose is as follows:
a hydraulic control circuit, the hydraulic system including a hydraulic pump, a hydraulic pump motor, an oil tank, an oil inlet pipe and an oil return pipe, the hydraulic control circuit comprising: the circuit breaker, the transformer, the switching power supply, the control relay, the alternating current contactor and the controller, wherein,
one end of the circuit breaker is electrically connected with a power grid, and the other end of the circuit breaker is electrically connected with a hydraulic pump motor through a contact of the alternating current contactor;
the primary side of the transformer is electrically connected with a power grid, and the secondary side of the transformer is electrically connected with the alternating current contactor through the contact of the control relay;
one end of the switching power supply is electrically connected with the secondary side of the transformer, and the other end of the switching power supply is electrically connected with the controller;
and the output end of the controller is connected with the control relay.
Preferably, the method further comprises: and the current sensor, the pressure sensor, the liquid level sensor and the oil temperature sensor are respectively connected with the input end of the controller.
Preferably, the output end of the controller is connected with a normal operation lamp and a fault alarm lamp.
Preferably, the current sensor collects a current value when the hydraulic pump motor operates;
the pressure sensor collects oil pressure in the oil inlet pipe;
the liquid level sensor collects the liquid level position in the oil tank;
the oil temperature sensor collects the oil temperature in the oil tank.
Preferably, the oil inlet pipe is provided with a one-way valve.
Preferably, an overflow valve is arranged between the oil inlet pipe and the oil return pipe.
The beneficial effects of the utility model are as follows: the hydraulic valve is simple in structure, reliable in connection, stable in performance and low in cost, and the oil inlet pipe pressure is stable by controlling the start and stop of the hydraulic pump without additional design program, so that the stable work of the hydraulic valve is ensured.
Drawings
FIG. 1 is a circuit diagram of a hydraulic control circuit of the present utility model;
FIG. 2 is a schematic diagram of a prior art hydraulic system;
fig. 3 is a circuit control logic diagram of the present utility model.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1, the hydraulic control circuit of the present utility model mainly comprises a main circuit for controlling a motor, a voltage conversion circuit and a control circuit. The method specifically comprises the following steps: a circuit breaker 1, a transformer 2, a switching power supply 3, a control relay 4, an alternating current contactor 5 and a controller 6.
The control motor main loop comprises a power grid and a breaker 1, and 3-phase 380V voltage is used for supplying power to the hydraulic pump motor 102. One end of the circuit breaker 1 is electrically connected with the power grid, and the other end is electrically connected with the hydraulic pump motor 102 through the contact 7 of the alternating current contactor.
The voltage conversion circuit comprises a transformer 2 and a switching power supply 3, and on the one hand, the voltage of 380V is changed into 220V through the transformer 2 and is used for controlling the alternating current contactor 5. The primary side of the transformer 2 is electrically connected with a power grid, and the secondary side is electrically connected with the alternating current contactor 5 through a contact 8 of the control relay. The transformer has the functions of voltage reduction and isolation, and effectively reduces the interference of the interference signals of the main loop on the control loop.
The voltage conversion circuit on the other hand accomplishes the conversion from alternating current 220V voltage to direct current DC24V through the switching power supply 3, and simultaneously provides a control power supply for the control circuit. One end of the switching power supply 3 is electrically connected to the secondary side of the transformer 2, and the other end is electrically connected to the controller 6. A current sensor 61, a pressure sensor 62, a liquid level sensor 63 and an oil temperature sensor 64 at the input of the controller 6. The output end of the controller 6 is connected with the control relay 4, the normal operation lamp 9 and the fault alarm lamp 10. Control of the hydraulic pump motor 102 and indication of the operating state of the oil tank 103 are completed. In this embodiment, the controller 6 is a model C4000EController, which has a simple structure, reliable connection, and stable performance, compared with devices such as a programmable logic controller, without design program control.
The current sensor 61 collects a current value when the hydraulic pump motor 102 is operated. The pressure sensor 62 collects oil pressure in the oil inlet pipe 104; the liquid level sensor 63 collects the liquid level position in the oil tank 103. The oil temperature sensor 64 collects the oil temperature in the oil tank 104. Before use, the pressure value, the liquid level low level threshold value and the overtemperature threshold value of the oil temperature are set by the controller 6.
The circuit breaker 1 is in the closed state. At this time, the main circuit is in a standby state, and the hydraulic pump motor 102 is controlled by the contact 7 of the ac contactor.
As shown in fig. 3, the change condition of the liquid level of the oil tank 103 is acquired by the liquid level sensor 63, the oil temperature sensor 64 reads the change of the oil temperature in real time, the controller 6 compares the real-time liquid level data with the liquid level low level threshold value, and the oil temperature data with the set overtemperature threshold value of the oil temperature, and at this time, an or operation is performed, and the operation result is true or false.
1) The operation result is false, which means that the system is in a normal working state, the controller 6 outputs 24V high level through the No. 2 terminal of the output end to light the normal operation lamp 9, the No. 1 terminal of the control output end outputs 24V high level, the control relay 4 is controlled to be in a working state, the contact 8 of the control relay 4 is in a closed state, the alternating current contactor 5 works, the contact 7 of the alternating current contactor is in a closed state, the hydraulic pump motor 102 is in a working state, the hydraulic pump 101 is driven to work to fill oil into the oil inlet pipe 104, a one-way valve is arranged on the oil inlet pipe to enable hydraulic oil not to flow back, and the pipeline pressure is continuously increased along with the continuous increase of oil quantity in the management. Meanwhile, when the comparison operation result of the real-time pressure value acquired by the pressure sensor 62 and the set value is true, the controller 6 represents that the system pressure value has reached the hydraulic set value, the terminal 1 at the control output end of the controller 6 outputs a low level of 0V, the control relay 4 does not work, the contact 8 of the control relay is in a normally open state, the alternating current contactor 5 does not work, the contact 7 of the alternating current contactor is in a normally open state to cut off the power supply of the main loop, and the hydraulic pump 101 is in a stop state. On the contrary, when the comparison operation result between the real-time pressure value and the set value is "false", the hydraulic pump 101 is in the working state. In order to ensure the further safety of the system, an overflow valve is arranged between the oil inlet pipe 104 and the oil return pipe 105, after the pressure value of the pipeline is larger than the overflow value, the oil inlet pipe 104 and the oil return pipe 105 are communicated, the pressure is not increased any more, and the safety of the pipeline is effectively ensured.
In addition, the on-off of the working pipeline can be switched by controlling the electromagnetic valve to be connected with the hydraulic valve.
2) The operation result is true, which means that the system is abnormal, the controller 6 outputs 24V high level through the 3 rd terminal of the output end to light the fault alarm lamp 10, the 1 st terminal of the control output end outputs 0V low level, the control relay 4 is in an inactive state, the contact 8 of the control relay is in a normally open state, the alternating current contactor 5 does not work, the contact 7 of the alternating current contactor is in a normally open state, the hydraulic pump motor 102 is in a stop state, therefore, the hydraulic pump motor 102 is in a stop state in the true state, the hydraulic pump 101 does not supply oil to the oil inlet pipe 104, and meanwhile, the fault alarm lamp 10 is in a light state, and the alarm prompt system is abnormal.
The current sensor 61 is used for detecting a current value during the operation of the hydraulic pump motor 102, judging the working state of the hydraulic pump motor 102, and controlling the hydraulic pump motor 102 forms closed-loop control.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. The utility model provides a hydraulic control circuit, hydraulic system includes hydraulic pump, hydraulic pump motor, oil tank, advance oil pipe and returns oil pipe, its characterized in that, hydraulic control circuit includes: the circuit breaker, the transformer, the switching power supply, the control relay, the alternating current contactor and the controller, wherein,
one end of the circuit breaker is electrically connected with a power grid, and the other end of the circuit breaker is electrically connected with a hydraulic pump motor through a contact of the alternating current contactor;
the primary side of the transformer is electrically connected with a power grid, and the secondary side of the transformer is electrically connected with the alternating current contactor through the contact of the control relay;
one end of the switching power supply is electrically connected with the secondary side of the transformer, and the other end of the switching power supply is electrically connected with the controller;
and the output end of the controller is connected with the control relay.
2. The hydraulic control circuit of claim 1, further comprising: and the current sensor, the pressure sensor, the liquid level sensor and the oil temperature sensor are respectively connected with the input end of the controller.
3. The hydraulic control circuit of claim 1, wherein the output of the controller is connected to a normal operation light and a fault warning light.
4. The hydraulic control circuit according to claim 2, wherein the current sensor collects a current value when the hydraulic pump motor is operated;
the pressure sensor collects oil pressure in the oil inlet pipe;
the liquid level sensor collects the liquid level position in the oil tank;
the oil temperature sensor collects the oil temperature in the oil tank.
5. The hydraulic control circuit according to claim 1, wherein the oil inlet pipe is provided with a check valve.
6. The hydraulic control circuit according to claim 1, wherein an overflow valve is provided between the oil inlet pipe and the oil return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325849.7U CN219758697U (en) | 2023-05-29 | 2023-05-29 | Hydraulic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325849.7U CN219758697U (en) | 2023-05-29 | 2023-05-29 | Hydraulic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219758697U true CN219758697U (en) | 2023-09-26 |
Family
ID=88083902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321325849.7U Active CN219758697U (en) | 2023-05-29 | 2023-05-29 | Hydraulic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219758697U (en) |
-
2023
- 2023-05-29 CN CN202321325849.7U patent/CN219758697U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Jing Inventor after: Xu Mingxian Inventor after: Teng Yanhua Inventor after: Zhang Jibiao Inventor after: Li Sen Inventor after: Wang Zijian Inventor after: Gu Weijie Inventor before: Li Jing Inventor before: Xu Mingxian Inventor before: Teng Yanhua Inventor before: Zhang Jibiao Inventor before: Li Sen Inventor before: Wang Zijian Inventor before: Gu Weijie |
|
| CB03 | Change of inventor or designer information |