Load-sensitive high-flow constant-pressure power device

Abstract

The invention discloses a load-sensitive large-flow constant-pressure power device. The load-sensitive large-flow constant-pressure power device comprises a first-stage device, a second-stage device, a third-stage device and a control system which are sequentially arranged from bottom to top. The first-stage device comprises a first-stage high-pressure chamber and at least one high-pressure medium power unit arranged in the first-stage high-pressure chamber, and at least one first flow channel opening communicated with the second-stage device is formed in the first-stage high-pressure chamber; the second-stage device comprises a second-stage high-pressure chamber and a pressure reducing device arranged in the second-stage high-pressure chamber, the pressure reducing device is provided with at least one valve, the second-stage high-pressure chamber is provided with a pressure release valve and a second flow channel opening, and the second flow channel opening is communicated with the third-stage device; the third-stage device comprises a third-stage high-pressure chamber, a cylinder is arranged at the upper end of the third-stage high-pressure chamber, the third-stage high-pressure chamber is provided with a pressure reducing valve communicated with the cylinder, and a pressure sensor is arranged in the cylinder. According to the invention, a high-flow high-pressure medium can be provided, stability and controllability can be realized, and the supply of the high-pressure medium can be quickly adjusted and stably controlled according to the load change condition.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure medium release, and more specifically, to a load-sensitive large-flow constant-pressure power device. Background Art

[0002] At present, the application of using high-pressure medium expansion to do work is very widespread. In the field of high-pressure medium propelling load movement, how to reduce the pressure of high-pressure and large-flow media and maintain the required stable control is a key issue in maintaining the stability of the load movement process. Summary of the invention

[0003] The purpose of the present invention is to provide a load-sensitive large-flow constant-pressure power device to overcome the defects of the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A load-sensitive large-flow constant-pressure power device, comprising a primary device, a secondary device, a tertiary device and a control system arranged in sequence from bottom to top;

[0006] The primary device comprises a primary high-pressure chamber and at least one high-pressure medium power unit arranged in the primary high-pressure chamber, and the primary high-pressure chamber is provided with at least one first flow channel opening communicating with the secondary device;

[0007] The secondary device comprises a secondary high-pressure chamber and a pressure reducing device arranged in the secondary high-pressure chamber, the pressure reducing device is provided with at least one valve, the secondary high-pressure chamber is provided with a pressure relief valve and a second flow channel, the second flow channel is connected with the tertiary device, and the high-pressure medium entering from the flow channel of the primary high-pressure chamber first enters the valve of the pressure reducing device to release the pressure and then enters the secondary high-pressure chamber;

[0008] The three-stage device comprises a three-stage high-pressure chamber, the upper end of the three-stage high-pressure chamber is provided with a cylinder, the three-stage high-pressure chamber is provided with a pressure reducing valve connected to the cylinder, and a pressure sensor is provided in the cylinder;

[0009] The control system collects the pressure in the cylinder in real time through a pressure sensor. If the pressure in the cylinder exceeds a first set value or is lower than a second set value, the pressure reducing valve of the third-level device is controlled to be closed or expanded, the valve of the second-level device is controlled to be closed or expanded, and the timing of the high-pressure medium power unit of the first-level device to release the high-pressure medium is controlled to be accelerated or slowed down in order of priority.

[0010] Furthermore, the number of the first flow channel openings is the same as the number of the pressure reducing devices.

[0011] Furthermore, the decompression device is a decompression chamber arranged in the secondary high-pressure chamber, and the valve is arranged on the decompression chamber.

[0012] Compared with the prior art, the advantages of the present invention are: the present invention can provide a large flow of high-pressure medium, can achieve stable and controllable, and can quickly adjust and stably control the supply of high-pressure medium according to load changes, and is suitable for scenarios with strict restrictions on load propulsion; the present invention has a simple structure and a direct release method. Due to the high internal pressure, it can be made of high-strength metal materials. In some scenarios with strict restrictions on device quality, it can also be made of some high-strength composite lightweight materials; the present invention can use electrical signal triggering and can be integrated with the system. In some working conditions that require timed release, the release time and sequence can be accurately controlled, and it is suitable for some complex and precisely controlled scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only 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.

[0014] Figure 1 It is a structural schematic diagram of the load-sensitive large-flow constant-pressure power device of the present invention. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0016] See also Figure 1 As shown, this embodiment discloses a load-sensitive large-flow constant-pressure power device, including a primary device 1, a secondary device 2, a tertiary device 3 and a control system 4 arranged in sequence from bottom to top.

[0017] In this embodiment, the first-level device 1 includes a first-level high-pressure chamber 11 and at least one high-pressure medium power unit 12 arranged in the first-level high-pressure chamber. The high-pressure medium power unit 12 is filled with high-pressure medium and released through the mouth of the power unit. The first-level high-pressure chamber 11 is formed by the gap space of the power unit and the first-level device. The first-level high-pressure chamber 11 is provided with at least one first flow channel 13 connected to the second-level device 2; under large flow conditions, the high-pressure medium power unit 12 is released according to a certain timing to ensure the large-flow high-pressure medium supply of the first-level high-pressure chamber 11 of the first-level device 1. One or more first flow channels 13 of the first-level high-pressure chamber 11 can be set, and the large-flow high-pressure medium is released from the first flow channel 13 to the second-level device.

[0018] In this embodiment, the main function of the secondary device 2 is to reduce the pressure of the high-pressure medium released from the flow channel through the pressure reducing device 22. The secondary device 2 includes a secondary high-pressure chamber 21 and a pressure reducing device 22 arranged in the secondary high-pressure chamber 21. The pressure reducing device 22 is provided with at least one valve 23. The secondary high-pressure chamber 21 is provided with a pressure relief valve 24 and a second flow channel opening 25. The second flow channel opening 25 is connected to the tertiary device 3. The high-pressure medium entering from the first flow channel opening 13 of the primary high-pressure chamber 11 first enters the valve 23 of the pressure reducing device 22 to release the pressure and then enters the secondary high-pressure chamber 21. The secondary device 2 controls the pressure of the high-pressure medium in the secondary high-pressure chamber 21 to stabilize to the required strength through the valve 23 and the pressure relief valve 24 of the pressure reducing device 22. The high-pressure medium entering the secondary device 22 from the flow channel of the primary high-pressure chamber 11 first enters the pressure reducing device 22 and then is released from the valve 23 of the device. After the high-pressure medium is reduced in pressure, it enters the secondary high-pressure chamber 21 of the secondary device 2. If the pressure in the secondary high-pressure chamber 21 after decompression is still higher than the set pressure value, it will overflow through the pressure relief valve 24 to maintain the pressure in the high-pressure chamber stable. The high-pressure medium in the secondary high-pressure chamber after pressure reduction and stabilization enters the tertiary device 3 through the second flow channel opening 25.

[0019] In this embodiment, the three-stage device 3 includes a three-stage high-pressure chamber 31, the upper end of the three-stage high-pressure chamber 31 is provided with a cylinder 5, the three-stage high-pressure chamber 31 is provided with a pressure reducing valve 32 connected to the cylinder 5, and the cylinder 5 is provided with a pressure sensor 6; the main function of the three-stage device 3 is to further stabilize the pressure reduction of the high-pressure medium released from the second flow channel 25 to the required degree. After the pressure of the high-pressure medium in the three-stage device 3 is stabilized, the pressure of the high-pressure medium is further reduced to the pressure setting value in the cylinder 5 through the pressure reducing valve 32 on the three-stage device. One or more pressure reducing valves 5 can be set on the three-stage device 3.

[0020] In this embodiment, the number of the first flow openings 13 and the number of the pressure reducing devices 22 are the same.

[0021] In this embodiment, the decompression device 22 is a decompression chamber disposed in the secondary high-pressure chamber 21, and the valve 23 is disposed on the decompression chamber.

[0022] The control system 4 is used to monitor the pressure in the cylinder in real time and control the high-pressure medium pressure to be stable, and control the pressure in the cylinder to always maintain the required pressure. The control system 4 collects the pressure in the cylinder 5 in real time through the pressure sensor 6. If the pressure in the cylinder 5 exceeds the first set value or is lower than the second set value, the pressure reducing valve 32 of the third-level device 3 is controlled to be closed or expanded, the valve 23 of the second-level device 2 is controlled to be closed or expanded, and the timing of the high-pressure medium power unit 12 of the first-level device 1 to release the high-pressure medium is accelerated or slowed down in accordance with the priority order. Specifically, the control logic of the control system 4 of this embodiment is as follows:

[0023] Step 1: Receive the pressure signal fed back by the pressure sensor 6 in the cylinder 5.

[0024] Step 2: If the pressure in cylinder 5 is sufficient, keep the system stable.

[0025] Step 3: If the pressure in the cylinder 5 is too high or too low, the control system first sends a command to control the pressure reducing valve 32 of the three-stage device 3 to close or expand. If the pressure feedback received from the cylinder 5 can meet the requirements, the pressure reducing valve 32 of the three-stage device is maintained.

[0026] Step 4: If the pressure in the cylinder 5 is too high or too low, and the required pressure cannot be reached by adjusting the pressure reducing valve 32 of the tertiary device 3 through the above step 3, the control system 4 sends a command to the valve 23 of the secondary device 2 to close or expand. If the pressure feedback received from the cylinder 5 is close to the required pressure, the pressure reducing valve 32 of the tertiary device 3 is maintained, and the pressure reducing valve 32 of the tertiary device is fine-tuned to control the pressure in the cylinder 5 to reach the required pressure.

[0027] Step 5: If the pressure in the cylinder 5 is too high or too low, and the required pressure cannot be reached by adjusting the pressure reducing valve 32 of the tertiary device 3 and the valve 23 of the secondary device 2 through the above step 4, the control system 4 sends a command to the power unit of the primary device 2 to control the power unit to release the high-pressure medium faster or slower, and speed up or slow down the supply of high-pressure medium with a large flow rate. At the same time, if the power unit releases too much high-pressure medium, which exceeds the regulating capacity of the valve 23 of the secondary device 2, it can be controlled by the pressure relief valve 24 installed on the secondary device 2. If the pressure feedback received in the cylinder 5 can be close to the required pressure, the timing of the high-pressure medium release by the power unit of the primary device is maintained, and the valve of the secondary device and the pressure reducing valve 32 of the tertiary device are fine-tuned to control the pressure in the cylinder 5 to reach the required pressure.

[0028] Step 6: The process of the load moving in the cylinder 5 causes the pressure in the cylinder 5 to change. The control system performs real-time iterative control according to the above steps 1 to 5 to keep the pressure in the cylinder 5 always maintained at the required level.

[0029] The present invention can provide a large flow of high-pressure medium, can achieve stable and controllable, and can quickly adjust and stably control the supply of high-pressure medium according to load changes, and is suitable for scenarios with strict restrictions on load propulsion.

[0030] The present invention has a simple structure and a direct release method. Due to the high internal pressure, it can be made of high-strength metal materials. In some scenarios where strict restrictions are placed on the quality of the device, it can also be made of some high-strength composite lightweight materials.

[0031] The present invention can be triggered by an electrical signal and can be integrated with the system. In some working conditions requiring timed release, the time and sequence of release can be precisely controlled, and it is suitable for some complex and precisely controlled scenarios.

[0032] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. A load-sensitive large flow constant pressure power device, characterized in that: It includes a primary device, a secondary device, a tertiary device and a control system arranged in sequence from bottom to top; The primary device comprises a primary high-pressure chamber and at least one high-pressure medium power unit arranged in the primary high-pressure chamber, and the primary high-pressure chamber is provided with at least one first flow channel opening communicating with the secondary device; The secondary device comprises a secondary high-pressure chamber and a pressure reducing device arranged in the secondary high-pressure chamber, the pressure reducing device is provided with at least one valve, the secondary high-pressure chamber is provided with a pressure relief valve and a second flow channel, the second flow channel is connected with the tertiary device, and the high-pressure medium entering from the flow channel of the primary high-pressure chamber first enters the valve of the pressure reducing device to release the pressure and then enters the secondary high-pressure chamber; The three-stage device comprises a three-stage high-pressure chamber, the upper end of the three-stage high-pressure chamber is provided with a cylinder, the three-stage high-pressure chamber is provided with a pressure reducing valve connected to the cylinder, and a pressure sensor is provided in the cylinder; The control system collects the pressure in the cylinder in real time through a pressure sensor. If the pressure in the cylinder exceeds a first set value or is lower than a second set value, the pressure reducing valve of the third-level device is controlled to be closed or expanded, the valve of the second-level device is controlled to be closed or expanded, and the timing of the high-pressure medium power unit of the first-level device to release the high-pressure medium is controlled to be accelerated or slowed down in order of priority.

2. The load-sensitive large-flow constant-pressure power device according to claim 1 is characterized in that: The number of the first flow channel openings is the same as the number of the pressure reducing devices.

3. The load-sensitive large-flow constant-pressure power device according to claim 1 is characterized in that: The decompression device is a decompression chamber arranged in the secondary high-pressure chamber, and the valve is arranged on the decompression chamber.

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