CN210509137U - Long-range group control large-drift-diameter fracturing manifold device - Google Patents
Long-range group control large-drift-diameter fracturing manifold device Download PDFInfo
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- CN210509137U CN210509137U CN201921235131.2U CN201921235131U CN210509137U CN 210509137 U CN210509137 U CN 210509137U CN 201921235131 U CN201921235131 U CN 201921235131U CN 210509137 U CN210509137 U CN 210509137U
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Abstract
The utility model provides a long-distance group control large-drift-diameter fracturing manifold device, which comprises a plurality of square cross joints, at least one square five-way valve, a multi-connected valve group, a hydraulic valve and a short-range control box; the square four-way and the square five-way are communicated through flange straight pipes, and hydraulic valves are arranged at passage ports of the square four-way and the square five-way; the output pipeline of the multi-connected valve group is connected with the hydraulic valve so as to control the opening and closing actions of the hydraulic valve; the short-range control box is electrically connected with the multi-connected valve group and distributes hydraulic power of the multi-connected valve group; the short-range control box is electrically connected with the long-range control computer system. Through adopting foretell structure, can reduce the quantity of each component, especially the quantity of intercommunication structure, the utility model discloses can single set or many sets of combined use, be convenient for arrange large-scale fracturing unit cluster.
Description
Technical Field
The utility model relates to an oil drilling equipment field, especially a long-range group accuse big latus rectum fracturing manifold device for fracturing operation.
Background
In the hydraulic fracturing construction, a fracturing manifold collects low-pressure fracturing fluid output by a sand mixing truck and distributes the low-pressure fracturing fluid to a plurality of fracturing pump trucks, and the high-pressure fracturing fluid pressurized by the pump trucks is collected and conveyed to a manifold device at a wellhead. The petroleum and natural gas exploration and development, particularly shale oil and gas fracturing construction, have higher requirements on the standard of the drift diameter and the pressure level.
A manual valve is arranged in a conventional fracturing manifold, and in the fracturing construction process, if a fracturing pump truck fails or a hydraulic end discharge manifold is punctured, personnel enter a high-pressure area to operate the manifold valve, so that safety production regulations and regulations are seriously violated, and personal safety is also seriously threatened. Therefore, all pump trucks need to stop running, construction is interrupted, after pressure of a manifold is relieved, personnel enter a high-pressure manifold area to operate and close a valve corresponding to a fault pump truck, construction is continued after the fault pump truck is cut off, the fracturing stratum transformation effect is seriously affected, and construction progress is delayed. Meanwhile, the valve is manually operated, and misoperation of the valve switch often occurs, so that equipment is damaged and construction fails, loss is large, and great potential safety hazards are caused. In conclusion, the development of a large-drift-diameter remote control fracturing manifold is urgently needed to meet engineering requirements.
Patent document CN 106499862 a describes a hydraulic remote control high-pressure manifold for fracturing, which comprises the following components: the hydraulic control plug valve system comprises a hydraulic pipeline, a plug valve, a hydraulic control plug valve box, an electric pump, a storage battery, a hydraulic distributor and a hydraulic oil control valve controlled by the hydraulic pipeline, the plug valve, the hydraulic control plug valve box, the electric pump, the storage battery and the hydraulic distributor; the storage battery supplies power for the hydraulic control plug valve system and the control box thereof; the control box is in real-time data transmission with the remote control system, the control box controls the electric pump to operate according to the instruction of the remote control system or the field input instruction to pump hydraulic oil to the hydraulic distributor, the hydraulic distributor opens a hydraulic oil control valve of the target plug valve, and the hydraulic oil drives the plug valve to open or close. The invention can control the high-pressure manifold locally or remotely, thereby greatly improving the safety and reliability of the operation of the high-pressure manifold. However, the structure has high processing difficulty, and particularly has high processing difficulty when being applied to high pressure. When large fracturing cluster equipment is arranged, the number of the connection structures of all parts is large, and the positions of the connection nodes are easy to become potential fault points.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a long-range group control big latus rectum fracturing manifold device is provided, arranges large-scale fracturing cluster equipment easily, the installation of being convenient for, and the reliability is high to can realize remote control.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a long-distance group control large-drift-diameter fracturing manifold device comprises a plurality of square four-way joints, at least one square five-way joint, a multi-connection valve group, a hydraulic valve and a short-range control box;
the square four-way and the square five-way are communicated through flange straight pipes, and hydraulic valves are arranged at passage ports of the square four-way and the square five-way;
the output pipeline of the multi-connected valve group is connected with the hydraulic valve so as to control the opening and closing actions of the hydraulic valve;
the short-range control box is electrically connected with the multi-connected valve group and distributes hydraulic power of the multi-connected valve group;
the short-range control box is electrically connected with the long-range control computer system.
In the preferred scheme, four side walls of the square four-way joint are provided with access ports with flanges, and the access ports are used for being connected with a hydraulic valve, a flange straight pipe or an end cover in a plugging manner.
In the preferred scheme, four side walls and a top wall of the square five-way are provided with access ports with flanges and used for being connected with a hydraulic valve, a flange straight pipe, an end cover plug, a pressure gauge, a flow meter and a safety valve.
In the preferred scheme, a plurality of electromagnetic directional valves are arranged in the multi-connected valve group, the input ends of the electromagnetic directional valves are connected with a hydraulic pump station, the output ends of the electromagnetic directional valves are connected with a hydraulic power part of a hydraulic valve through an output pipeline, and the hydraulic power part is used for driving a valve core in the hydraulic valve to open and close;
and an electromagnetic coil of the electromagnetic reversing valve is electrically connected with the short-range control box and is used for controlling the valve core of the electromagnetic reversing valve to reverse.
In the preferred scheme, a plurality of electromagnetic directional valves are arranged in a multi-connected valve group, the input ends of the electromagnetic directional valves are connected with a hydraulic pump station, the output ends of the electromagnetic directional valves are connected with a plug-in directional valve group through output pipelines, the output pipelines of the plug-in directional valve group are connected with a hydraulic power part of a hydraulic valve, and the hydraulic power part is used for driving a valve core in the hydraulic valve to open and close;
and an electromagnetic coil of the electromagnetic reversing valve is electrically connected with the short-range control box and is used for controlling the valve core of the electromagnetic reversing valve to reverse.
In the preferred scheme, the hydraulic valve is a plug valve, a valve core of the plug valve is connected with a hydraulic motor through a transmission mechanism, and the hydraulic motor is connected with the multi-connection valve group.
In the preferred scheme, the hydraulic valve is a plate valve, a valve plate of the plate valve is connected with a piston rod of a hydraulic cylinder, and a cylinder body of the hydraulic cylinder is connected with the multi-connection valve group.
In a preferable scheme, a sensor for measuring the position of the valve is arranged near the hydraulic valve, and the sensor is electrically connected with the proximity control box;
the sensor comprises one of a displacement sensor, a rotation angle sensor and a position sensor.
In a preferred embodiment, the remote control computer system is electrically connected to the proximity control box via a multi-wire cable.
In another preferred scheme, the remote control computer system is in a short-range control box through a wireless connection mode;
the wireless connection mode comprises a gprs mode, a 3g mode, a 4g mode, a 5g mode, a WiFi mode, a zigbee mode or a LoRa mode.
The utility model provides a pair of long-range group control big latus rectum fracturing manifold device through adopting foretell structure, can reduce the quantity of each component, especially the quantity of connectivity structure, the utility model discloses can single set or many sets of combined use, be convenient for arrange large-scale fracturing unit cluster. The sensor can control the opening of the valve. And can realize the independent and simultaneous opening and closing of the valves. The utility model discloses can realize the long-range centralized control of manifold valve, and control logic satisfies the requirement of equipment safe handling, not only provides the fracturing manifold that pressure is high, the discharge capacity is big, the reliability is high for extensive fracturing construction, has also greatly improved the security and the automation level of construction, has more alleviateed field work personnel's intensity of labour, has reduced personnel's outfit, guarantee equipment safety and personal safety. The safety risk and the misoperation that personnel got into high-pressure area operation valve are avoided, the accuracy of valve control is ensured, simultaneously the construction cost is also reduced, and the construction efficiency is improved.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic perspective view of the fracturing device of the present invention.
Fig. 2 is the utility model discloses a fracturing unit overlook the schematic diagram.
Fig. 3 is a schematic diagram of the control structure of the present invention.
In the figure: the device comprises a square four-way joint 1, a hydraulic valve 2, a plug valve 21, a plate valve 22, a flange straight pipe 3, a multi-connected valve group 4, an electromagnetic directional valve 41, a low-pressure manifold 5, a square five-way joint 6, a short-range control box 7, a skid frame assembly 8, a hydraulic pump station 9, a remote control computer system 10, an end cover plug 11, a pressure gauge 12 and a sensor 13.
Detailed Description
As shown in fig. 1 to 3, a remote group control large-bore fracturing manifold device comprises a plurality of square cross joints 1, at least one square five-way 6, a multi-connected valve group 4, a hydraulic valve 2 and a short-range control box 7;
the square four-way joints 1 and the square five-way joints 6 are communicated through flange straight pipes 3, and hydraulic valves 2 are arranged at passage ports of the square four-way joints 1 and the square five-way joints 6 and are used for being connected with a fracturing pump; in the structure of the square cross 1 and the square five-way 6, the passage ports on two sides are mainly used for connecting the hydraulic valve 2 or the end cover plug 11, and the passage ports on two ends are used for connecting the flange straight pipes 3 to be mutually communicated or connected to the pipeline of a wellhead or connected with the end cover plug 11. And flange structures are arranged at the passage openings of the square four-way joint 1 and the square five-way joint 6 so as to ensure reliable connection.
The utility model discloses manifold device's major structure includes: the flange is connected with a double-channel parallel structure, namely a plurality of square cross joints 1 are arranged in two rows in parallel, and the flange further comprises a single-channel or double-channel structure connected by a hammering union. The manifold side channel valve can be a high-pressure hydraulic plug valve or a hydraulic gate valve. The main body structure of the single-channel or double-channel manifold and the hydraulic drive valve are formed, and the large-drift-diameter fracturing manifold with remote group control is formed overall.
An output pipeline of the multi-connected valve group 4 is connected with the hydraulic valve 2 to control the opening and closing actions of the hydraulic valve 2.
The short-range control box 7 is electrically connected with the multi-connected valve group 4 and distributes hydraulic power of the multi-connected valve group 4;
the proximity control box 7 is electrically connected to a remote control computer system 10 to perform remote control of the proximity control box 7 through the remote control computer system 10.
In a preferred embodiment, the remote control computer system 10 is electrically connected to the proximity control box 7 through a multi-core cable.
In another preferred scheme, the remote control computer system 10 is in a wireless connection with the short-range control box 7; the wireless connection mode comprises a gprs mode, a 3g mode, a 4g mode, a 5g mode, a WiFi mode, a zigbee mode or a LoRa mode. In this example, the LoRa method is preferably adopted, and the LoRa wireless protocol is adopted, so that the control distance of 2-5 Km in town and 15 Km in suburban area can be realized. The wiring is more convenient. One LoRa gateway can be connected with ten thousand LoRa nodes, and control is convenient. Due to the fact that the data volume of the fracturing equipment is not large, the transmission rate of hundreds to tens of Kbps of the LoRa wireless protocol can meet the use requirement, or the transmission data is compressed in an instruction set mode to meet the use requirement.
When the remote control computer system 10 is operated on a computer operation interface, the opening and closing instructions of the hydraulic valve 2 are transmitted to the short-range control box 7, so that the valve opening and closing can be remotely controlled, and the opening and closing states of the valve can be displayed on the remote computer operation interface in real time. To avoid misoperation, the short-range control and the long-range control cannot be operated simultaneously. And the operation state of the hydraulic pump station, the pressure and the output pressure of the hydraulic system and the on-off state of each valve are displayed on the computer operation interface in real time.
The preferable scheme is as shown in fig. 1 and 2, four side walls of the square four-way joint 1 are provided with access ports with flanges, and the access ports are used for being connected with a hydraulic valve 2, a flange straight pipe 3 or an end cover plug 11.
In a preferred scheme, as shown in fig. 1 and 2, four side walls and a top wall of the square five-way valve 6 are provided with access ports with flanges, and the access ports are used for being connected with a hydraulic valve 2, a flange straight pipe 3, an end cover plug 11, a pressure gauge, a flow meter and a safety valve.
According to the preferable scheme, as shown in fig. 3, a plurality of electromagnetic directional valves 41 are arranged in the multi-connected valve group 4, the input ends of the electromagnetic directional valves 41 are connected with the hydraulic pump station 9, the output ends of the electromagnetic directional valves 41 are connected with the hydraulic power part of the hydraulic valve 2 through an output pipeline, and the hydraulic power part is used for driving a valve core in the hydraulic valve 2 to open and close. The multi-connected valve group is an integrated device of an electromagnetic directional valve and a signal converter, and the flow direction of hydraulic oil entering a hydraulic valve driver is switched by receiving an electric signal so as to control the opening and closing of the hydraulic valve 2.
The electromagnetic coil of the electromagnetic directional valve 41 is electrically connected with the proximity control box 7 and used for controlling the valve core of the electromagnetic directional valve 41 to change direction.
In the preferred scheme, a plurality of electromagnetic directional valves 41 are arranged in a multi-connected valve group 4, the input ends of the electromagnetic directional valves 41 are connected with a hydraulic pump station 9, the output ends of the electromagnetic directional valves 41 are connected with a plug-in directional valve group through output pipelines, the output pipelines of the plug-in directional valve group are connected with a hydraulic power component of a hydraulic valve 2, and the hydraulic power component is used for driving a valve core in the hydraulic valve 2 to open and close;
the electromagnetic coil of the electromagnetic directional valve 41 is electrically connected with the proximity control box 7 and used for controlling the valve core of the electromagnetic directional valve 41 to change direction.
The preferable scheme is as shown in fig. 3, the hydraulic valve 2 is a plug valve 21, a valve core of the plug valve is connected with a hydraulic motor through a transmission mechanism, and the hydraulic motor is connected with the multi-connection valve group 4 through a pipeline. The transmission mechanism is selected from a speed reduction mechanism, such as a gear reducer, a cycloidal pin gear reducer, and the like. The advantage of this solution is that the opening of the valve can be accurately controlled.
In a preferable scheme, as shown in fig. 3, the hydraulic valve 2 is a plate valve 22, a valve plate of the plate valve is connected with a piston rod of a hydraulic cylinder, and a cylinder body of the hydraulic cylinder is connected with the multi-valve bank 4.
In a preferable scheme, a sensor 13 for measuring the position of the valve is arranged near the hydraulic valve 2, and the sensor 13 is electrically connected with the proximity control box 7;
the sensor 13 includes one of a displacement sensor, a rotation angle sensor and a position sensor. For example, a photoelectric displacement sensor, a grating displacement sensor and a Hall displacement sensor, and the opening state and the opening degree of the valve are detected by measuring the displacement. The rotation angle sensor is for detecting the rotation angle of the plug valve 21 to detect the open state of the valve, and the degree of opening. The position sensor is a travel switch, such as a mechanical travel switch, a hall travel switch, a photoelectric travel switch, or the like.
The manifold control system is provided with specially developed control software which is integrated with fracturing pump truck control software on the instrument truck to form that the fracturing pump truck can be operated only by starting the hydraulic valve; the operation of the fracturing pump truck is stopped firstly, and then the equipment protection control logic relation of the hydraulic valve is closed, so that misoperation is avoided, and the equipment safety and the construction safety are guaranteed. After the short-range control box receives a switch instruction, the multi-connection valve group is controlled to switch the flow direction of hydraulic oil, when the valve switch reaches a specified position, the sensor sends a signal to the short-range control box, control software in the short-range control box sends an instruction to control the multi-connection valve group to close the hydraulic oil flow channel, and meanwhile, the computer operation interface displays that the valve switch is in place. The on-off states of the hydraulic valves 2 are displayed on the operation interface of the computer and the operation interface of the short-range control box in the instrument vehicle, the plurality of hydraulic valves 2 can be controlled to be opened and closed simultaneously, and the hydraulic valves 2 are controlled independently and accurately. The multi-connected valve group and the short-range control box are fixed on the skid frame assembly 8, the valve hydraulic pipelines and the sensor signal lines are all laid on the surface of the skid frame assembly 8, the low-pressure manifold 7 is installed below a high-pressure structure consisting of the square cross joint 1 and the square five-way joint 6, the high-pressure manifold and the low-pressure manifold are both fixedly installed on the skid frame assembly 8, and the protection device is arranged and hoisted and moved along with the manifolds. The utility model discloses a long-range group accuse big latus rectum fracturing manifold device can single set use, also can many sets of built-up connection use.
Short-range control operation flow: only the manifold carries out short-range control under the condition of no pressure, on a touch screen operation interface of the short-range control box 7, each hydraulic valve 2 corresponds to a code and is selected to be switched on or off at a touch screen button, the system transmits an instruction to the multi-connected valve group, an electromagnetic reversing valve 41 in the multi-connected valve group switches an oil supply route to drive the hydraulic valve 2 to be switched on or off, meanwhile, a sensor feeds a valve switch position signal back to the short-range control box 7, when the switch is in place, the system in the short-range control box 7 recognizes to transmit an instruction of stopping oil supply, and the hydraulic valve 2 keeps the position state.
Remote control operation flow: remote control can be used in the fracturing construction process and in the condition that the manifold is not provided with pressure. An operator can reach a valve opening and closing instruction up and down on an operation interface of a computer in the instrument vehicle, the valve opening and closing instruction is transmitted to the short-range control box through a signal cable, the control box transmits the instruction to the multi-connected valve group, an oil supply route in the valve hydraulic driver is controlled, the valve is controlled to be opened or closed remotely, meanwhile, a valve opening and closing state signal is fed back to the computer and displayed on the operation interface of the computer. The personnel are prevented from entering the high-pressure area for operation, and the labor intensity of the personnel is also reduced.
The hydraulic pump station 9 provides hydraulic oil for the remote control system, is equipped with pressure sensor in the hydraulic pump station, monitors hydraulic system pressure, and when system pressure is less than the setting value, the operation of automatic control motor, the hydraulic oil pump work, and system pressure rises. And when the system pressure reaches a set value, automatically controlling the motor to stop running.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention. For the sake of brevity, all the combinations of the embodiments are not exemplified, and therefore, the technical features of the embodiments can be combined with each other to generate more technical solutions without conflict.
Claims (10)
1. The utility model provides a long-range group control big latus rectum fracturing manifold device which characterized by: the four-way valve comprises a plurality of square four-way valves (1), at least one square five-way valve (6), a multi-connection valve group (4), a hydraulic valve (2) and a short-range control box (7);
the square four-way joints (1) and the square five-way joints (6) are communicated through the flange straight pipes (3), and the passage openings of the square four-way joints (1) and the square five-way joints (6) are provided with hydraulic valves (2);
an output pipeline of the multi-connected valve group (4) is connected with the hydraulic valve (2) to control the opening and closing actions of the hydraulic valve (2);
the short-range control box (7) is electrically connected with the multi-connected valve group (4) and distributes hydraulic power of the multi-connected valve group (4);
the short-range control box (7) is electrically connected with a remote control computer system (10).
2. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: four side walls of the square four-way joint (1) are provided with access ports with flanges and are used for being connected with a hydraulic valve (2), a flange straight pipe (3) or an end cover plug (11).
3. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: four side walls and the top wall of the square five-way valve (6) are provided with access ports with flanges and are used for being connected with the hydraulic valve (2), the flange straight pipe (3), the end cover plugging (11), the pressure gauge, the flow meter and the safety valve.
4. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: a plurality of electromagnetic directional valves (41) are arranged in the multi-connected valve group (4), the input ends of the electromagnetic directional valves (41) are connected with the hydraulic pump station (9), the output ends of the electromagnetic directional valves (41) are connected with a hydraulic power part of the hydraulic valve (2) through an output pipeline, and the hydraulic power part is used for driving a valve core in the hydraulic valve (2) to open and close;
an electromagnetic coil of the electromagnetic directional valve (41) is electrically connected with the short-range control box (7) and is used for controlling the valve core of the electromagnetic directional valve (41) to change direction.
5. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: a plurality of electromagnetic directional valves (41) are arranged in the multi-connected valve group (4), the input ends of the electromagnetic directional valves (41) are connected with a hydraulic pump station (9), the output ends of the electromagnetic directional valves (41) are connected with the plug-in directional valve group through output pipelines, the output pipelines of the plug-in directional valve group are connected with a hydraulic power component of the hydraulic valve (2), and the hydraulic power component is used for driving a valve core in the hydraulic valve (2) to open and close;
an electromagnetic coil of the electromagnetic directional valve (41) is electrically connected with the short-range control box (7) and is used for controlling the valve core of the electromagnetic directional valve (41) to change direction.
6. The remote group control large-drift-diameter fracturing manifold device as claimed in claim 4 or 5, wherein: the hydraulic valve (2) is a plug valve, a valve core of the plug valve is connected with a hydraulic motor through a transmission mechanism, and the hydraulic motor is connected with the multi-connection valve group (4).
7. The remote group control large-drift-diameter fracturing manifold device as claimed in claim 4 or 5, wherein: the hydraulic valve (2) is a plate valve, a valve plate of the plate valve is connected with a piston rod of the hydraulic cylinder, and a cylinder body of the hydraulic cylinder is connected with the multi-connected valve group (4).
8. The remote group control large-drift-diameter fracturing manifold device as claimed in claim 4 or 5, wherein: a sensor (13) for measuring the position of the valve is arranged near the hydraulic valve (2), and the sensor (13) is electrically connected with the short-range control box (7);
the sensor (13) comprises one of a displacement sensor, a rotation angle sensor and a position sensor.
9. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: the remote control computer system (10) is electrically connected with the short-range control box (7) through a multi-core cable.
10. The remote group control large-drift-diameter fracturing manifold device according to claim 1, wherein: the remote control computer system (10) is in a short-range control box (7) in a wireless connection mode;
the wireless connection mode comprises a gprs mode, a 3g mode, a 4g mode, a 5g mode, a WiFi mode, a zigbee mode or a LoRa mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921235131.2U CN210509137U (en) | 2019-08-01 | 2019-08-01 | Long-range group control large-drift-diameter fracturing manifold device |
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| CN201921235131.2U CN210509137U (en) | 2019-08-01 | 2019-08-01 | Long-range group control large-drift-diameter fracturing manifold device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153266A (en) * | 2021-05-25 | 2021-07-23 | 成都鹦鹉螺大数据科技有限公司 | Manifold real-time data acquisition and allocation system |
| CN114458279A (en) * | 2022-01-20 | 2022-05-10 | 大庆市天德忠石油科技有限公司 | Long-radius fracturing manifold for oil field well cementation |
| CN116575895A (en) * | 2023-06-05 | 2023-08-11 | 建湖县鸿达阀门管件有限公司 | Possesses automatically regulated, remote control superhigh pressure single channel big latus rectum fracturing manifold |
-
2019
- 2019-08-01 CN CN201921235131.2U patent/CN210509137U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153266A (en) * | 2021-05-25 | 2021-07-23 | 成都鹦鹉螺大数据科技有限公司 | Manifold real-time data acquisition and allocation system |
| CN114458279A (en) * | 2022-01-20 | 2022-05-10 | 大庆市天德忠石油科技有限公司 | Long-radius fracturing manifold for oil field well cementation |
| CN114458279B (en) * | 2022-01-20 | 2022-07-29 | 大庆市天德忠石油科技有限公司 | Long-radius fracturing manifold for oil field well cementation |
| CN116575895A (en) * | 2023-06-05 | 2023-08-11 | 建湖县鸿达阀门管件有限公司 | Possesses automatically regulated, remote control superhigh pressure single channel big latus rectum fracturing manifold |
| CN116575895B (en) * | 2023-06-05 | 2023-10-24 | 建湖县鸿达阀门管件有限公司 | Possesses automatically regulated, remote control superhigh pressure single channel big latus rectum fracturing manifold |
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