CN217873564U - Cartridge valve composite hydraulic system for driving supercritical CO2 compressor - Google Patents
Cartridge valve composite hydraulic system for driving supercritical CO2 compressor Download PDFInfo
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- CN217873564U CN217873564U CN202221387984.XU CN202221387984U CN217873564U CN 217873564 U CN217873564 U CN 217873564U CN 202221387984 U CN202221387984 U CN 202221387984U CN 217873564 U CN217873564 U CN 217873564U
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Abstract
For driving supercritical CO 2 A cartridge valve composite hydraulic system of a compressor belongs to the technical field of hydraulic systems. The oil outlet of the oil pump is communicated with the oil inlets of the first cartridge valves (2) of the two groups of two-position three-way cartridge valves at the same time, and the oil outlet of each first cartridge valve (2)Oil ports are communicated with an execution element and an oil inlet of a corresponding second cartridge valve (3) at the same time, an oil outlet of each second cartridge valve (3) is communicated with an oil tank (16), an oil inlet of an electromagnetic directional valve is communicated with an oil outlet of an oil pump, an oil outlet of the electromagnetic directional valve is connected with a control oil port of each first cartridge valve (2), when the first cartridge valve (2) of one group of two-position three-way cartridge valves is closed, signals of the second cartridge valve (3) of the group of two-position three-way cartridge valves and the first cartridge valve (2) of the other group of two-position three-way cartridge valves are lost at the same time, and the controlled cartridge valves are opened at the same time. The utility model discloses the life cycle of extension hydraulic oil, cartridge valve convenient to use and maintenance guarantee the long-term normal operating of system ability.
Description
Technical Field
For driving supercritical CO 2 A cartridge valve composite hydraulic system of a compressor belongs to the technical field of hydraulic systems.
Background
Supercritical CO 2 The compressor is one of key devices for injecting and displacing oil in an oil field, and a hydraulic system is utilized to start a supercharging device for supercritical CO 2 The pressure increase being supercritical CO 2 One of the main forms of compressor. The oil displacement is changed by the geological conditions of the oil field, and the pressure between stratums is also in the changing process, even reaches the indexes of high pressure and ultrahigh pressure. This places higher demands on the compressor injection pressure, and the hydraulic drive, with the increase in gas and pressure, causes the power lines and changes in the hydraulic systemThe increase of the valve, but the common hydraulic transmission reversing valve can not meet the requirements of flow and flow speed, and the production potential of equipment is limited.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, provides the driving supercritical CO for driving the supercritical CO2 compressor, can meet the requirements of flow and flow speed and meet the requirements of driving the supercritical CO2 compressor 2 A cartridge valve composite hydraulic system of a compressor.
The utility model provides a technical scheme that its technical problem adopted is: this a compound hydraulic system of cartridge valve for driving supercritical CO compressor, its characterized in that: the oil pump comprises an oil tank, an oil pump, two-position three-way cartridge valves and electromagnetic directional valves, wherein the two-position three-way cartridge valves are arranged in two groups, each group of two-position three-way cartridge valves comprises a first cartridge valve and a second cartridge valve, an oil inlet of the oil pump is communicated with the oil tank, an oil outlet of the oil pump is communicated with oil inlets of the first cartridge valves of the two groups of two-position three-way cartridge valves at the same time, an oil outlet of each first cartridge valve is communicated with an execution element and an oil inlet of the corresponding second cartridge valve at the same time, an oil outlet of each second cartridge valve is communicated with the oil tank, an oil inlet of the electromagnetic directional valve is communicated with an oil outlet of the oil pump, an oil outlet of the electromagnetic directional valve is connected with a control oil port of each first cartridge valve, the control oil ports of each second cartridge valve are connected with the control oil ports of each second cartridge valve through a hydraulic control one-way valve, when the first cartridge valves of one group of two-position three-way cartridge valves are closed, signals of the second cartridge valves of the group of two-position three-way cartridge valves and the first cartridge valves of the other group of two-position three-way cartridge valves are lost at the same time, and the controlled valves are opened simultaneously.
Preferably, the electromagnetic directional valve is a three-position four-way electromagnetic directional valve, a control oil port of the three-position four-way electromagnetic directional valve is communicated with an oil inlet of the oil pump, an oil return port of the three-position four-way electromagnetic directional valve is communicated with an oil tank, two oil outlets of the three-position four-way electromagnetic directional valve are respectively connected with control oil ports of first cartridge valves of the two groups of two-position three-way cartridge valves, and are simultaneously respectively connected with control oil ports of the second cartridge valves through hydraulic control one-way valves.
Preferably, the oil-saving control system further comprises a two-position three-way electromagnetic directional valve, an oil inlet of the two-position three-way electromagnetic directional valve is communicated with an oil outlet of the oil pump, an oil return port of the two-position three-way electromagnetic directional valve is communicated with the oil tank, and an oil outlet of the two-position three-way electromagnetic directional valve is communicated with an oil inlet of the three-position four-way electromagnetic directional valve.
Preferably, the hydraulic control system further comprises pilot-operated overflow valves, control oil ports of the second cartridge valves are connected with the pilot-operated overflow valves, the pilot-operated overflow valves are connected with the corresponding hydraulic control one-way valves in parallel, and oil outlets of the pilot-operated overflow valves are communicated with the oil tank. Each pilot operated overflow valve is connected with a corresponding hydraulic control one-way valve in parallel.
Preferably, the oil pump further comprises a cartridge overflow valve and a right-angle check valve, an oil outlet of the oil pump is simultaneously connected with an oil inlet of the right-angle check valve and an oil inlet of the cartridge overflow valve, an oil outlet of the right-angle check valve is simultaneously communicated with an oil inlet of each first cartridge valve and an oil inlet of the three-position four-way electromagnetic directional valve, and an oil outlet of the cartridge overflow valve is communicated with the oil tank.
Preferably, the oil pumps are connected in parallel, and the plug-in overflow valves and the right-angle check valves are in one-to-one correspondence with the oil pumps.
Preferably, the oil-saving control system further comprises an air-cooled radiator and an oil return filter, and oil outlets of the second cartridge valves are sequentially connected in series with the air-cooled radiator and the oil return filter and then communicated with the oil tank.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
the method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor can realize the conditions of centering, high pressure and large flow, and is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor is a direction, pressure and flow composite loop, and the temperature rise of the system can be controlled by adjusting the appropriate flow speed, thereby being beneficial to the safe operation of the hydraulic system and leading the oil displacement and pressure increasing device to carry out supercritical CO separation 2 The pressurization and oil displacement play a good role, and the output of an oil well can be effectively improved. This method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor has the advantages of small flow resistance, large through-flow capacity, integrated arrangement of all control elements, simplified connecting pipeline and standardized matching of the cartridge valveThe valve core has the advantages of high action speed, small leakage amount and no blocking phenomenon, reversing impact is reduced, the temperature rise of the system is effectively controlled, the anti-pollution capacity of the system is enhanced, the service cycle of hydraulic oil is prolonged, the cartridge valve is convenient to use and maintain, and the long-term normal operation of the system is ensured.
Drawings
FIG. 1 is a schematic diagram for driving supercritical CO 2 Pipeline connection diagram of a cartridge valve composite hydraulic system of a compressor.
Fig. 2 is a piping connection diagram of a conventional hydraulic system.
In the figure: 1. the hydraulic control system comprises a cartridge overflow valve 2, a first cartridge valve 3, a second cartridge valve 4, a pilot operated overflow valve 5, a three-position four-way electromagnetic directional valve 6, a two-position three-way electromagnetic directional valve 7, a hydraulic cylinder 8, a hydraulic control one-way valve 9, a pressure measuring joint 10, a pressure gauge 11, a motor 12, a plunger pump 13, a ball valve 14, an oil inlet filter 15, a right-angle one-way valve 16, an oil tank 17, an air cooling radiator 18, an oil return filter 19, a one-way throttle valve 20 and an electro-hydraulic directional valve.
Detailed Description
The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.
Fig. 1 to 2 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 2.
For driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor comprises an oil tank 16, an oil pump, two-position three-way cartridge valves and electromagnetic directional valves, wherein the two-position three-way cartridge valves are arranged in two groups, each group of two-position three-way cartridge valves comprises a first cartridge valve 2 and a second cartridge valve 3, an oil inlet of the oil pump is communicated with the oil tank 16, an oil outlet of the oil pump is communicated with oil inlets of the first cartridge valves 2 of the two groups of two-position three-way cartridge valves simultaneously, and oil outlets of the first cartridge valves 2 are communicated with oil inlets of the first cartridge valves 2The control system is characterized in that the control system is simultaneously communicated with an execution element and an oil inlet of a corresponding second cartridge valve 3, an oil outlet of each second cartridge valve 3 is communicated with an oil tank 16, an oil inlet of an electromagnetic directional valve is communicated with an oil outlet of an oil pump, an oil outlet of the electromagnetic directional valve is connected with a control oil port of each first cartridge valve 2 and is simultaneously connected with a control oil port of each second cartridge valve 3 through a hydraulic control one-way valve 8, when the first cartridge valves 2 of one group of two-position three-way cartridge valves are closed, signals of the second cartridge valves 3 of the group of two-position three-way cartridge valves and the first cartridge valves 2 of the other group of two-position three-way cartridge valves are simultaneously lost, and the controlled cartridge valves are simultaneously opened, namely, the second cartridge valves 3 of the group of two-position three-way cartridge valves and the first cartridge valves 2 of the other group of two-position three-way cartridge valves are simultaneously opened. This method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor can realize the conditions of centering, high pressure and large flow, and is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor is a direction, pressure and flow composite loop, and the temperature rise of the system can be controlled by adjusting the appropriate flow velocity, so that the safe operation of the hydraulic system is facilitated, and the oil displacement and pressurization device of the system can be used for supercritical CO 2 The pressurization and oil displacement play a good role, and the output of an oil well can be effectively improved. The method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor has the advantages of small flow resistance, large through-flow capacity, integrated layout of all control elements, simplified connecting pipelines, standardized configuration of the cartridge valve, high valve element action speed, small leakage amount, no blocking phenomenon, reduction of reversing impact, effective control of temperature rise of the system, enhancement of pollution resistance of the system, extension of the service cycle of hydraulic oil, convenience in use and maintenance of the cartridge valve and guarantee of long-term normal operation of the system.
Specifically, the method comprises the following steps: as shown in fig. 1: in this embodiment, the electromagnetic directional valve is a three-position four-way electromagnetic directional valve 5, the actuator is a hydraulic cylinder 7, and the hydraulic cylinder 7 may be a single-rod hydraulic cylinder or a double-rod hydraulic cylinder. And the first cartridge valves 2 of the two groups of two-position three-way cartridge valves are cartridge valves CV2 and CV3 respectively, the second cartridge valves 3 of the two groups of two-position three-way cartridge valves are cartridge valves CV1 and CV4 respectively, wherein the cartridge valves CV2 and CV1 are a pair of cartridge valves, and the cartridge valves CV3 and CV4 are a pair of cartridge valves.
The oil pump includes plunger pump 12 and motor 11, and plunger pump 12 is provided with two, and each plunger pump 12's oil inlet all is linked together with oil tank 16 after establishing ties ball valve 13 and oil filter 14 in proper order, and each plunger pump 12 all is connected with motor 11. The oil outlet of each plunger pump 12 is connected with a right-angle one-way valve 15, the oil inlet of each right-angle one-way valve 15 is communicated with the oil outlet of the plunger pump 12, the oil outlet of each right-angle one-way valve 15 is communicated with the oil inlets of the two first cartridge valves 2, namely the oil outlet of each right-angle one-way valve 15 is communicated with the oil inlet of the cartridge valve CV2 and the oil inlet of the cartridge valve CV 3.
The method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor further comprises cartridge overflow valves 1, oil outlets of the plunger pumps 12 are further connected with the cartridge overflow valves 1, and the cartridge overflow valves 1 are arranged in parallel with corresponding right-angle check valves 15. Pressure measuring joints 9 are arranged on pipelines between oil outlets of the plunger pumps 12 and oil inlets of the corresponding right-angle check valves 15, and pressure gauges 10 are connected to the pressure measuring joints 9.
The oil outlets of the first cartridge valves 2 are respectively communicated with the oil inlets of the second cartridge valves 3 and the oil ports of the hydraulic cylinders 7, the oil outlets of the two first cartridge valves 2 are respectively communicated with the corresponding cavities of the hydraulic cylinders 7 to achieve reciprocating motion of the hydraulic cylinders 7, and the oil outlets of the second cartridge valves 3 are respectively communicated with the oil tank 16. In this embodiment, the oil outlet of the cartridge valve CV2 is simultaneously communicated with the oil inlet of the cartridge valve CV1 and the oil port a of the hydraulic cylinder 7, the oil outlet of the cartridge valve CV3 is simultaneously communicated with the oil inlet of the cartridge valve CV4 and the oil port B of the hydraulic cylinder 7, and the oil outlet of the cartridge valve CV1 and the oil outlet of the cartridge valve CV4 are both communicated with the oil tank 16.
This method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor further comprises an air-cooled radiator 17 and an oil return filter 18, and oil outlets of the second cartridge valves 3 are sequentially connected with the air-cooled radiator 17 and the oil return filter 18 in series and then communicated with an oil tank 16. In the embodiment, the oil outlet of the cartridge valve CV1 and the oil outlet of the cartridge valve CV4 are sequentially connected in series with an air-cooled radiator 17 and an oil return filter 18, and then communicated with the oil tank 16.
This method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor further comprises a two-position three-way electromagnetic directional valve 6 and a hydraulic control one-way valve 8.
An oil inlet of the two-position three-way electromagnetic directional valve 6 is communicated with oil outlets of the two right-angle one-way valves 15, an oil outlet of the two-position three-way electromagnetic directional valve 16 is communicated with an oil inlet of the three-position four-way electromagnetic directional valve 5, and an oil return port of the two-position three-way electromagnetic directional valve 6 is communicated with an oil tank 16.
One oil outlet of the three-position four-way electromagnetic reversing valve 5 is communicated with a control oil port of the cartridge valve CV2 and is connected with a control oil port of the cartridge valve CV4 through a hydraulic control one-way valve 8, and the other oil outlet of the three-position four-way electromagnetic reversing valve 5 is communicated with a control oil port of the cartridge valve CV3 and is connected with a control oil port of the cartridge valve CV1 through the hydraulic control one-way valve 8.
The method is used for driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor further comprises a pilot overflow valve 4, a control oil port of each second cartridge valve 3 is connected with the pilot overflow valve 4, and each pilot overflow valve 4 is connected with a corresponding hydraulic control one-way valve 8 in parallel. Pressure measuring joints 9 are arranged on pipelines between the oil outlets of the valve cores of the second cartridge valves 3 and the corresponding pilot operated overflow valves 4, and pressure gauges 10 are connected to the pressure measuring joints 9.
This method is used for driving supercritical CO 2 The working process of the cartridge valve composite hydraulic system of the compressor is as follows: the ball valve 13 is opened, the motor 11 is started, the motor 11 drives the plunger pump 12 to work, the plunger pump 12 pumps hydraulic oil in the oil tank 16, the plunger pump 12 is adjusted to be suitable for system pressure by the plug-in overflow valve 1, the pressure of the hydraulic oil output by the plunger pump 12 is detected by the pressure measuring joint 9 and the pressure gauge 10, and the duplex pump system is respectively connected with the right-angle one-way valve 15 and can be used for pressure adjustment of a single plunger pump 12 in the duplex pump.
When the electromagnetic head IYA of the three-position four-way electromagnetic directional valve 5 is electrified, the electromagnetic head 3YA of the two-position three-way electromagnetic directional valve 6 is simultaneously electrified, the three-position four-way electromagnetic directional valve 5 is switched to the left position, the valve core of the cartridge valve CV3 is closed at the moment, the valve cores of the cartridge valves CV2 and CV4 are opened, hydraulic oil enters the left cavity of the hydraulic cylinder 7 from the oil port A of the hydraulic cylinder 7 after passing through the cartridge valve CV2 to push the piston of the hydraulic cylinder 7 to move rightwards, hydraulic oil in the right cavity of the hydraulic cylinder 7 enters the cartridge valve CV4 from the oil port B of the hydraulic cylinder 7, and then enters the oil tank 16 from the cartridge valve CV4 through the air-cooled radiator 17 and the reflux filter 18. When the piston advancing work load of the hydraulic cylinder 7 enables the system pressure to reach the set value of the pilot overflow valve 4, the pilot overflow valve 4 opens the overflow, and the maximum working pressure of the advancing piston of the hydraulic cylinder 7 can be limited. Adjustment of the throttle device of the cartridge valve CV2 controls the operating speed of the piston movement.
When a piston of the hydraulic cylinder 7 moves to the end point of the hydraulic cylinder rightwards, an electromagnetic head IYA of the three-position four-way electromagnetic directional valve 5 loses power, an electromagnetic head 2YA is electrified to enable the three-position four-way electromagnetic directional valve 5 to be reversed, a valve core is switched to the right position, a valve core of a cartridge valve CV2 is closed, a cartridge valve CV3 and a valve core of a cartridge valve CV1 are opened, pressure oil enters a right cavity of the hydraulic cylinder 7 through an oil port B port of the hydraulic cylinder 7 after passing through the cartridge valve CV3 to push the piston of the hydraulic cylinder 7 to move leftwards, hydraulic oil in a left cavity of the hydraulic cylinder 7 enters the cartridge valve CV1 through an oil port A of the hydraulic cylinder 7, and then enters an oil tank 16 through an air-cooled radiator 17 and an oil return filter 18 by the cartridge valve CV 1. The stroke speed of the piston is adjusted by a throttling device of a cartridge valve CV3, and the maximum working pressure of the piston operation is limited by a corresponding pilot overflow valve 4. When the piston moves left to the end point of the hydraulic cylinder, the electromagnetic head 2YA of the three-position four-way electromagnetic directional valve 5 loses power, the electromagnetic head IYA is electrified, the three-position four-way electromagnetic directional valve 5 is switched to the left position, and the operation is repeated in a circulating mode and continuously operated.
When the system stops operating, the two-position three-way electromagnetic head 3YA is electrified, and the hydraulic system is in an unloading state, so that energy is saved.
As shown in fig. 2: the existing hydraulic system comprises an electro-hydraulic directional valve 20, a one-way throttle valve 19 and a hydraulic cylinder 7, wherein an oil inlet of the electro-hydraulic directional valve 20 is connected with an oil pump, an oil outlet of the electro-hydraulic directional valve 20 is connected with an oil tank 16, two oil outlets of the electro-hydraulic directional valve 20 are simultaneously connected with oil inlets of a pilot overflow valve 4 and a one-way throttle valve 9, the pilot overflow valve 4 and the corresponding one-way throttle valve 9 are connected in parallel, and oil outlets of the two one-way throttle valves 9 are communicated with two ends of the hydraulic cylinder 7.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (7)
1. For driving supercritical CO 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the oil pump comprises an oil tank (16), an oil pump, two-position three-way cartridge valves and electromagnetic directional valves, wherein the two-position three-way cartridge valves are arranged in two groups, each group of two-position three-way cartridge valves comprises a first cartridge valve (2) and a second cartridge valve (3), an oil inlet of the oil pump is communicated with the oil tank (16), an oil outlet of the oil pump is communicated with oil inlets of the first cartridge valves (2) of the two groups of two-position three-way cartridge valves at the same time, an oil outlet of each first cartridge valve (2) is communicated with an execution element and an oil inlet of the corresponding second cartridge valve (3) at the same time, an oil outlet of each second cartridge valve (3) is communicated with the oil tank (16), an oil inlet of the electromagnetic directional valve is communicated with an oil outlet of the oil pump, an oil outlet of the electromagnetic directional valve is connected with a control oil port of each first cartridge valve (2), the oil outlet of the electromagnetic directional valve is connected with a control oil port of each second cartridge valve (3) through a hydraulic control one-way valve (8), and when the first cartridge valves (2) of one group of the two-position three-way cartridge valves are closed, signals of the two-position three-way cartridge valves are simultaneously lost and the control oil ports of the other group of the two-position three-way cartridge valves are simultaneously lost.
2. The method for driving supercritical CO according to claim 1 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the electromagnetic directional valve is a three-position four-way electromagnetic directional valve (5), a control oil port of the three-position four-way electromagnetic directional valve (5) is communicated with an oil inlet of an oil pump, an oil return port of the three-position four-way electromagnetic directional valve (5) is communicated with an oil tank (16), and a three-position four-way electromagnetic directional valve (5) is communicated with an oil outlet of the oil pumpTwo oil outlets of the position four-way electromagnetic directional valve (5) are respectively connected with control oil ports of first cartridge valves (2) of the two groups of two-position three-way cartridge valves, and are simultaneously respectively connected with control oil ports of second cartridge valves (3) through hydraulic control one-way valves (8).
3. The method for driving supercritical CO of claim 2 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the oil pump oil return device is characterized by further comprising a two-position three-way electromagnetic reversing valve (6), wherein an oil inlet of the two-position three-way electromagnetic reversing valve (6) is communicated with an oil outlet of the oil pump, an oil return port of the two-position three-way electromagnetic reversing valve (6) is communicated with an oil tank (16), and an oil outlet of the two-position three-way electromagnetic reversing valve (6) is communicated with an oil inlet of the three-position four-way electromagnetic reversing valve (5).
4. The method for driving supercritical CO of claim 1 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the hydraulic control system is characterized by further comprising pilot overflow valves (4), control oil ports of the second cartridge valves (3) are connected with the pilot overflow valves (4), the pilot overflow valves (4) are connected with corresponding hydraulic control one-way valves (8) in parallel, and oil outlets of the pilot overflow valves (4) are communicated with an oil tank (16).
5. The method for driving supercritical CO according to claim 2 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: also comprises a plug-in overflow valve (1) and a right-angle one-way valve (15), the oil outlet of the oil pump is simultaneously connected with the oil inlet of the right-angle one-way valve (15) and the oil inlet of the plug-in overflow valve (1), an oil outlet of the right-angle one-way valve (15) is communicated with an oil inlet of each first cartridge valve (2) and an oil inlet of the three-position four-way electromagnetic directional valve (5) at the same time, and an oil outlet of the cartridge overflow valve (1) is communicated with an oil tank (16).
6. The method for driving supercritical CO according to claim 5 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the oil pumps are connected in parallelTwo plug-in overflow valves (1) and two right-angle one-way valves (15) are respectively in one-to-one correspondence with the oil pumps.
7. The method for driving supercritical CO of claim 1 2 The cartridge valve composite hydraulic system of the compressor is characterized in that: the oil outlet of each second cartridge valve (3) is sequentially connected with the air-cooled radiator (17) and the oil return filter (18) in series and then communicated with the oil tank (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221387984.XU CN217873564U (en) | 2022-06-06 | 2022-06-06 | Cartridge valve composite hydraulic system for driving supercritical CO2 compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221387984.XU CN217873564U (en) | 2022-06-06 | 2022-06-06 | Cartridge valve composite hydraulic system for driving supercritical CO2 compressor |
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| CN217873564U true CN217873564U (en) | 2022-11-22 |
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| CN202221387984.XU Active CN217873564U (en) | 2022-06-06 | 2022-06-06 | Cartridge valve composite hydraulic system for driving supercritical CO2 compressor |
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| CN (1) | CN217873564U (en) |
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- 2022-06-06 CN CN202221387984.XU patent/CN217873564U/en active Active
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