Mechanical seal type multi-pass selective well valve

Abstract

The utility model discloses mechanical seal formula multichannel well selection valve, including outer cylinder, the both ends of outer cylinder are provided with first sealing cover respectively, rotatably be provided with inner cylinder in outer cylinder, the both ends of inner cylinder respectively from first sealing cover stretch out, and one end of inner cylinder is connected with mixed oil outlet, and the other end of inner cylinder is connected with metering oil outlet, and the inner cylinder is provided with the baffle, and the outer wall between mixed oil outlet and baffle of inner cylinder is provided with the through -flow hole, and the side portion of inner cylinder is provided with the communicating pipe, and the outside of outer cylinder is provided with a plurality of crude oil import and drive mechanism, and drive mechanism with inner cylinder transmission cooperation is matched. The utility model discloses mechanical seal formula multichannel well selection valve, has solved the multichannel valve in the use process of existing, easily damaged, and further leads to the problem of unable to complete the metering.

Description

Technical Field

[0001] This utility model belongs to the field of oil well metering technology, specifically relating to a mechanically sealed multi-port well valve. Background Technology

[0002] Most oil wells are water-injected wells during the production process. Therefore, the crude oil contains water, gas and impurities during the oil production process. In order to monitor the production of oil wells, it is necessary to dynamically monitor the production fluid of the oil wells to accurately assess the production status of the oil wells. This is an important task in oilfield production management.

[0003] Currently, oil well production systems still maintain a "three-level deployment" model of "single well - metering station - transfer station." Direct metering at the single well outlet is costly and unsuitable for large-scale application in oil fields. To reduce costs and ensure timely metering, single-well metering needs to be completed within the metering station. The number of production wells managed by a metering station is determined by well density, single-well production, and the level of automation. A single metering station's gathering valve group can manage 50 wells, but due to limitations such as excessive pipeline density, numerous valve groups, large footprint, and low automation levels, most metering stations struggle to reach their maximum managed well capacity. Oil well production metering typically employs periodic continuous metering equipment. For high-production wells, each continuous metering session lasts 8-24 hours, while for low-production wells, it lasts 4-8 hours, with a metering cycle of 5-8 days. During dynamic metering, the manifold valves need to be periodically adjusted to select wells for metering separators or multiphase flow meters to achieve oil well metering.

[0004] Currently, the multi-way valves used for oil well metering are prone to damage and cannot perform metering due to the following reasons during operation:

[0005] (1) When the valve position signal is inaccurate and the multi-way valve rotary encoder fails to detect the position, the motor may run for a long time to search for the valve position, which may burn out the motor coil.

[0006] (2) Excessive torque of the multi-way valve or overload of the motor will damage the motor;

[0007] (3) If the control module malfunctions, the motor will be damaged if it runs for a long time.

[0008] (4) A dead rotary encoder of a multi-way valve can cause the inability to measure. Utility Model Content

[0009] The purpose of this invention is to provide a mechanically sealed multi-way well selection valve to solve the problem that existing multi-way valves are easily damaged during use, thus making it impossible to complete metering.

[0010] To solve the above-mentioned technical problems, this utility model discloses a mechanically sealed multi-port well valve, including an outer cylinder with first sealing caps at both ends. An inner cylinder is rotatably disposed inside the outer cylinder, with both ends of the inner cylinder extending from the first sealing caps. One end of the inner cylinder is connected to a mixing oil outlet, and the other end is connected to a metering oil outlet. A baffle is disposed inside the inner cylinder, and a flow hole is disposed on the outer wall of the inner cylinder between the mixing oil outlet and the baffle. A connecting pipe is disposed on the side of the inner cylinder. Multiple crude oil inlets and a drive mechanism are disposed outside the outer cylinder, and the drive mechanism is in transmission cooperation with the inner cylinder.

[0011] The technical solution of this utility model also has the following characteristics:

[0012] As a further improvement to the technical solution of this utility model, the driving mechanism includes a motor, the driving end of the motor is connected to a first bevel gear, the first bevel gear meshes with a second bevel gear, and the second bevel gear is fixed to the outside of the inner cylinder.

[0013] As a further improvement to the technical solution of this utility model, a drain outlet is provided at the bottom of the outer cylinder.

[0014] As a further improvement to the technical solution of this utility model, a pair of supports are provided at the bottom of the outer cylinder.

[0015] As a further improvement to the technical solution of this utility model, the support is a saddle support.

[0016] As a further improvement to the technical solution of this utility model, the two ends of the inner cylinder are respectively installed in the corresponding first sealing cover by bearings.

[0017] As a further improvement to the technical solution of this utility model, a second sealing cover is provided at both ends of the inner cylinder, and the second sealing cover is fixed to the corresponding first sealing cover by bolts and nuts.

[0018] As a further improvement to the technical solution of this utility model, multiple crude oil imports are arranged at the same angle.

[0019] As a further improvement to the technical solution of this utility model, an arc-shaped connector is provided at one end of the crude oil inlet, and the arc-shaped connector matches the shape of the outer cylinder.

[0020] As a further improvement to the technical solution of this utility model, the quantity of imported crude oil is six.

[0021] As a further improvement to the technical solution of this utility model, the motor is a stepper motor.

[0022] The beneficial effects of this utility model are:

[0023] (1) The mechanically sealed multi-way well selection valve of this utility model can complete the tasks of automatic well selection and single-well dynamic metering for the metering station of the oilfield, realize the automatic switching of multiple well pipelines and one metering device, and realize the pipeline to enter the mixing outlet or metering outlet through the electric actuator. Thus, it has the characteristics of remote control, convenient management, small footprint, fast production, reusability and manual operation even when power is off, and is suitable for dynamic metering and well selection work in metering stations in remote oilfields and harsh environments such as swamps, Gobi, deserts and plateaus.

[0024] (2) The mechanical seal type multi-way well selection valve of this utility model adopts mechanical seal to achieve the sealing work from crude oil inlet to metering outlet. It uses the forged connecting pipe to directly cooperate with the outer cylinder to achieve mechanical seal at the well selection connection. Combined with the first sealing cover and the second sealing cover, the outer cylinder and the inner cylinder are sealed, which meets the sealing requirements, reduces the manufacturing and design cost, and reduces the possibility of internal leakage.

[0025] (3) The mechanical seal type multi-way well selection valve of this utility model realizes the controllable rotation of the valve core (inner cylinder and connecting pipe) through the drive mechanism composed of bevel gear and motor. The traditional motor arrangement is changed from the axial direction to the outer side of the valve body through bevel gear transmission, which provides more options for the motor arrangement. At the same time, the motor is placed on the outside of the valve body (outer cylinder) for easy inspection and maintenance, which extends the service time and reliability. In case of emergency power failure, well selection can still be achieved by manual operation.

[0026] (4) The mechanical seal type multi-way well valve of this utility model is designed with a drain port, which can regularly clean the impurities carried by crude oil and settled inside the valve body, reduce the damage of impurities inside the multi-way valve to the mechanical seal of the connecting pipe, and further improve the working time of the equipment.

[0027] (5) The mechanical seal type multi-way well valve of this utility model increases the number of passages to six compared with the traditional multi-way well valve. At the same time, the valve body (outer cylinder) is sealed inside by the first sealing cover, which facilitates disassembly and maintenance. The use of forged steel material as the connecting cylinder improves the reliability of the mechanical seal.

[0028] (6) The mechanical seal type multi-way well valve of this utility model has a simple overall structure, more reasonable coordination between the components, and a low probability of failure leading to damage. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of the mechanically sealed multi-port well valve of this utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the mechanically sealed multi-port well valve of this utility model.

[0032] Figure 3 This is a top view of the mechanically sealed multi-port well valve of this utility model.

[0033] In the diagram: 1. Outer cylinder; 2. Crude oil inlet; 3. Connecting pipe; 4. Second bevel gear; 5. Inner cylinder; 6. First sealing cap; 7. Nut; 8. Bolt; 9. Metering oil outlet; 10. Bearing; 11. Second sealing cap; 12. Support; 13. Drain outlet; 14. Baffle plate; 15. Mixing oil outlet; 16. Arc-shaped connector; 17. Motor; 18. First bevel gear. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] Example 1

[0038] like Figure 1 As shown, this utility model discloses a mechanically sealed multi-port well valve, comprising an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1, an inner cylinder 5 rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6, a mixing oil outlet 15 connected to one end of the inner cylinder 5, a metering oil outlet 9 connected to the other end of the inner cylinder 5, a partition 14 disposed inside the inner cylinder 5, a flow hole disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14, a connecting pipe 3 disposed on the side of the inner cylinder 5, and six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives and cooperates with the inner cylinder 5 on the outside of the outer cylinder 1.

[0039] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0040] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0041] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0042] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0043] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0044] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0045] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0046] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0047] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0048] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0049] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as that of the crude oil inlet, which can achieve a tight fit with the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cap ensures the sealing of the multi-port well valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cap seals both ends of the valve body and has a mixing outlet and a metering outlet, ensuring the sealing of the valve body and the tight connection of the outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing outlet and the other part serves as the channel for the metering outlet, ensuring that the stable operation of the two channels does not affect each other.

[0050] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0051] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe 3 is adjusted by the drive mechanism to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of the N1 port.

[0052] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0053] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0054] Step 4: As the measurement time for crude oil inlet N1 is reached, the drive mechanism moves again, transferring the connection empty position. This device should rotate 60° to connect with the next crude oil inlet N2 to realize the production measurement of the next crude oil inlet.

[0055] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the drive mechanism rotates the connecting pipe 3 by 30°. At this time, the connecting pipe 3 forms a mechanical seal with the inner wall of the outer cylinder 1, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0056] Example 2

[0057] like Figure 1 As shown in Example 1, Example 2 of this utility model, a mechanically sealed multi-port well valve, also includes an outer cylinder 1. First sealing caps 6 are respectively provided at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1. Both ends of the inner cylinder 5 extend from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end is connected to a metering oil outlet 9. A partition 14 is provided inside the inner cylinder 5. A flow hole is provided on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is provided on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are provided on the outside of the outer cylinder 1.

[0058] like Figure 2 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 2 of this utility model, the driving mechanism includes a motor 17, the driving end of the motor 17 is connected to a first bevel gear 18, the first bevel gear 18 meshes with a second bevel gear 4, and the second bevel gear 4 is fixed to the outside of the inner cylinder 5.

[0059] Compared to Embodiment 1, Embodiment 2 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0060] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0061] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0062] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0063] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0064] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0065] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0066] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0067] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0068] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0069] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0070] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as that of the crude oil inlet, which can achieve a tight fit with the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cap ensures the sealing of the multi-port well valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cap seals both ends of the valve body and has a mixing outlet and a metering outlet, ensuring the sealing of the valve body and the tight connection of the outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing outlet and the other part serves as the channel for the metering outlet, ensuring that the stable operation of the two channels does not affect each other. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0071] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0072] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0073] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0074] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0075] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0076] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0077] Example 3

[0078] like Figure 1 As shown in Example 1, Example 3 of this utility model, a tower-type solar thermal collector, includes an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end of the inner cylinder 5 is connected to a metering oil outlet 9. A partition 14 is disposed inside the inner cylinder 5. A flow hole is disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is disposed on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are disposed outside the outer cylinder 1.

[0079] like Figure 2 and Figure 3As shown, unlike Embodiment 1, in Embodiment 3 of this utility model, the driving mechanism includes a motor 17, the driving end of the motor 17 is connected to a first bevel gear 18, the first bevel gear 18 meshes with a second bevel gear 4, the second bevel gear 4 is fixed to the outside of the inner cylinder 5, and a drain port 13 is provided at the bottom of the outer cylinder 1.

[0080] Compared to Embodiment 1, Embodiment 3 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0081] Compared to Example 1, Example 3 adds a drain outlet 13. The principle is that the bottom of the outer cylinder 1 is provided with a drain outlet 13 so that impurities can be discharged periodically.

[0082] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0083] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0084] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0085] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0086] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0087] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0088] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0089] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0090] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0091] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0092] Drainage outlet 13 is used to periodically discharge impurities.

[0093] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as the crude oil inlet, which can achieve a tight fit to the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cover ensures the sealing of the multi-way well selection valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cover seals both ends of the valve body and has a mixing oil outlet and a metering oil outlet, ensuring the sealing of the valve body and the tight connection of the oil outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing oil outlet and the other part serves as the channel for the metering oil outlet, ensuring that the stable operation of the two channels does not affect each other. The drain port is used in this mechanism to remove sediment during the crude oil metering process. Impurities carried in the crude oil may precipitate during transmission, which can easily lead to a reduction in the volume of the multi-way well selection valve, accelerated wear of the connecting pipe, and damage to the pump body. Therefore, the drain port is opened periodically to remove the sediment. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0094] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0095] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0096] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0097] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0098] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0099] Step 5: When the metering cycle is reached, open the drain port N7 to remove the impurities deposited inside the valve carried by the crude oil. This can effectively reduce the impurities inside the valve and prevent the connecting pipe from being worn and damaged by impurities during use.

[0100] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0101] Example 4

[0102] like Figure 1As shown in Example 1, Example 4 of this utility model, a tower-type solar thermal collector, includes an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end of the inner cylinder 5 is connected to a metering oil outlet 9. A partition 14 is disposed inside the inner cylinder 5. A flow hole is disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is disposed on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are disposed outside the outer cylinder 1.

[0103] like Figure 2 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 3 of this utility model, the driving mechanism includes a motor 17. The driving end of the motor 17 is connected to a first bevel gear 18. The first bevel gear 18 meshes with a second bevel gear 4. The second bevel gear 4 is fixed to the outside of the inner cylinder 5. A drain port 13 is provided at the bottom of the outer cylinder 1. A pair of supports 12 are provided at the bottom of the outer cylinder 1. The supports 12 are saddle supports.

[0104] Compared to Embodiment 1, Embodiment 4 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0105] Compared to Example 1, Example 4 adds a drain port 13. The principle is that the bottom of the outer cylinder 1 is provided with a drain port 13 so that impurities can be discharged periodically.

[0106] Compared to Example 1, Example 4 adds a pair of supports 12, the principle of which is that a pair of supports 12 are provided at the bottom of the outer cylinder 1.

[0107] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0108] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0109] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0110] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0111] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0112] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0113] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0114] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0115] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0116] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0117] Drainage outlet 13 is used to periodically discharge impurities.

[0118] Support 12 is used to support the outer cylinder 1 to ensure that it does not shake during operation.

[0119] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as the crude oil inlet, which can achieve a tight fit to the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cover ensures the sealing of the multi-way well selection valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cover seals both ends of the valve body and has a mixing oil outlet and a metering oil outlet, ensuring the sealing of the valve body and the tight connection of the oil outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing oil outlet and the other part serves as the channel for the metering oil outlet, ensuring that the stable operation of the two channels does not affect each other. The drain port is used in this mechanism to remove sediment during the crude oil metering process. Impurities carried in the crude oil may precipitate during transmission, which can easily lead to a reduction in the volume of the multi-way well selection valve, accelerated wear of the connecting pipe, and damage to the pump body. Therefore, the drain port is opened periodically to remove the sediment. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0120] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0121] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0122] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0123] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0124] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0125] Step 5: When the metering cycle is reached, open the drain port N7 to remove the impurities deposited inside the valve carried by the crude oil. This can effectively reduce the impurities inside the valve and prevent the connecting pipe from being worn and damaged by impurities during use.

[0126] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0127] Example 5

[0128] like Figure 1 As shown in Example 1, Example 5 of this utility model, a tower-type solar thermal collector, includes an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end of the inner cylinder 5 is connected to a metering oil outlet 9. A partition 14 is disposed inside the inner cylinder 5. A flow hole is disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is disposed on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are disposed outside the outer cylinder 1.

[0129] like Figure 2 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 5 of this utility model, the drive mechanism includes a motor 17. The drive end of the motor 17 is connected to a first bevel gear 18. The first bevel gear 18 meshes with a second bevel gear 4. The second bevel gear 4 is fixed to the outside of the inner cylinder 5. A drain port 13 is provided at the bottom of the outer cylinder 1. A pair of supports 12 are provided at the bottom of the outer cylinder 1. The supports 12 are saddle supports. The two ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10.

[0130] Compared to Embodiment 1, Embodiment 5 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0131] Compared to Example 1, Example 5 adds a drain port 13. The principle is that the bottom of the outer cylinder 1 is provided with a drain port 13 so that impurities can be discharged periodically.

[0132] Compared to Example 1, Example 5 adds a pair of supports 12, the principle of which is that a pair of supports 12 are provided at the bottom of the outer cylinder 1.

[0133] Compared to Embodiment 1, Embodiment 5 specifies a rotatable assembly method for the inner cylinder 5. The principle is that both ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10.

[0134] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0135] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0136] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0137] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0138] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0139] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0140] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0141] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0142] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0143] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0144] Drainage outlet 13 is used to periodically discharge impurities.

[0145] Support 12 is used to support the outer cylinder 1 to ensure that it does not shake during operation.

[0146] The bearing 10 is used for bearing and rotatably mounts the inner cylinder 5 in the outer cylinder 1.

[0147] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as the crude oil inlet, which can achieve a tight fit to the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cover ensures the sealing of the multi-way well selection valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cover seals both ends of the valve body and has a mixing oil outlet and a metering oil outlet, ensuring the sealing of the valve body and the tight connection of the oil outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing oil outlet and the other part serves as the channel for the metering oil outlet, ensuring that the stable operation of the two channels does not affect each other. The drain port is used in this mechanism to remove sediment during the crude oil metering process. Impurities carried in the crude oil may precipitate during transmission, which can easily lead to a reduction in the volume of the multi-way well selection valve, accelerated wear of the connecting pipe, and damage to the pump body. Therefore, the drain port is opened periodically to remove the sediment. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0148] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0149] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0150] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0151] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0152] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0153] Step 5: When the metering cycle is reached, open the drain port N7 to remove the impurities deposited inside the valve carried by the crude oil. This can effectively reduce the impurities inside the valve and prevent the connecting pipe from being worn and damaged by impurities during use.

[0154] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0155] Example 6

[0156] like Figure 1 As shown in Example 1, Example 6 of this utility model, a tower-type solar thermal collector, includes an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end of the inner cylinder 5 is connected to a metering oil outlet 9. A partition 14 is disposed inside the inner cylinder 5. A flow hole is disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is disposed on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are disposed outside the outer cylinder 1.

[0157] like Figure 2 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 6 of this utility model, a tower-type solar thermal collector includes a drive mechanism comprising a motor 17. The drive end of the motor 17 is connected to a first bevel gear 18, which meshes with a second bevel gear 4. The second bevel gear 4 is fixed to the outside of the inner cylinder 5. A drain port 13 is provided at the bottom of the outer cylinder 1, and a pair of supports 12 are provided at the bottom of the outer cylinder 1. The supports 12 are saddle supports. The two ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10. The two ends of the inner cylinder 5 are respectively provided with second sealing covers 11, which are fixed to the corresponding first sealing covers 6 by bolts 8 and nuts 7.

[0158] Compared to Embodiment 1, Embodiment 6 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0159] Compared to Example 1, Example 6 adds a drain port 13. The principle is that the bottom of the outer cylinder 1 is provided with a drain port 13 so that impurities can be discharged periodically.

[0160] Compared to Example 1, Example 6 adds a pair of supports 12, the principle of which is that a pair of supports 12 are provided at the bottom of the outer cylinder 1.

[0161] Compared to Example 1, Example 6 specifies a rotatable assembly method for the inner cylinder 5. The principle is that the two ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10.

[0162] Compared to Example 1, Example 6 adds a second sealing cover 11. The principle is that the two ends of the inner cylinder 5 are respectively provided with a second sealing cover 11, and the second sealing cover 11 is fixed to the corresponding first sealing cover 6 by bolts 8 and nuts 7.

[0163] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0164] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0165] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0166] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0167] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0168] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0169] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0170] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0171] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0172] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0173] Drainage outlet 13 is used to periodically discharge impurities.

[0174] Support 12 is used to support the outer cylinder 1 to ensure that it does not shake during operation.

[0175] The bearing 10 is used for bearing and rotatably mounts the inner cylinder 5 in the outer cylinder 1.

[0176] The second sealing cap 11 is used to further seal the interior of the outer body 1 to ensure that no oil leakage occurs.

[0177] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as the crude oil inlet, which can achieve a tight fit to the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cover ensures the sealing of the multi-way well selection valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cover seals both ends of the valve body and has a mixing oil outlet and a metering oil outlet, ensuring the sealing of the valve body and the tight connection of the oil outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing oil outlet and the other part serves as the channel for the metering oil outlet, ensuring that the stable operation of the two channels does not affect each other. The drain port is used in this mechanism to remove sediment during the crude oil metering process. Impurities carried in the crude oil may precipitate during transmission, which can easily lead to a reduction in the volume of the multi-way well selection valve, accelerated wear of the connecting pipe, and damage to the pump body. Therefore, the drain port is opened periodically to remove the sediment. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0178] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0179] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0180] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0181] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0182] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0183] Step 5: When the metering cycle is reached, open the drain port N7 to remove the impurities deposited inside the valve carried by the crude oil. This can effectively reduce the impurities inside the valve and prevent the connecting pipe from being worn and damaged by impurities during use.

[0184] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0185] Example 7

[0186] like Figure 1 As shown in Example 1, Example 7 of this utility model, a tower-type solar thermal collector, includes an outer cylinder 1, with first sealing caps 6 at both ends of the outer cylinder 1. An inner cylinder 5 is rotatably disposed inside the outer cylinder 1, with both ends of the inner cylinder 5 extending out from the first sealing caps 6. One end of the inner cylinder 5 is connected to a mixing oil outlet 15, and the other end of the inner cylinder 5 is connected to a metering oil outlet 9. A partition 14 is disposed inside the inner cylinder 5. A flow hole is disposed on the outer wall of the inner cylinder 5 between the mixing oil outlet 15 and the partition 14. A connecting pipe 3 is disposed on the side of the inner cylinder 5. Six crude oil inlets 2 (denoted as N1-N6) and a drive mechanism that drives the inner cylinder 5 are disposed outside the outer cylinder 1.

[0187] like Figure 2 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 7 of this utility model, a tower-type solar thermal collector includes a drive mechanism comprising a motor 17. The drive end of the motor 17 is connected to a first bevel gear 18, which meshes with a second bevel gear 4. The second bevel gear 4 is fixed to the outside of the inner cylinder 5. A drain port 13 is provided at the bottom of the outer cylinder 1, and a pair of supports 12 are provided at the bottom of the outer cylinder 1. The supports 12 are saddle supports. Both ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10. Both ends of the inner cylinder 5 are respectively provided with second sealing covers 11, which are fixed to the corresponding first sealing covers 6 by bolts 8 and nuts 7. One end of the crude oil inlet 2 is provided with an arc-shaped connector 16, which matches the shape of the outer cylinder 1.

[0188] Compared to Embodiment 1, Embodiment 7 provides a specific structure of the drive mechanism. The principle is that the motor 17 drives the first bevel gear 18 to rotate, and the first bevel gear 18 drives the second bevel gear 4 to rotate. During the rotation of the second bevel gear 4, the inner cylinder 5 is rotated, thereby realizing the connection between the upper connecting pipe 3 and the corresponding crude oil inlet 2.

[0189] Compared to Example 1, Example 7 adds a drain outlet 13. The principle is that the bottom of the outer cylinder 1 is provided with a drain outlet 13 so that impurities can be discharged periodically.

[0190] Compared to Example 1, Example 7 adds a pair of supports 12, the principle of which is that a pair of supports 12 are provided at the bottom of the outer cylinder 1.

[0191] Compared to Example 1, Example 7 specifies a rotatable assembly method for the inner cylinder 5, the principle of which is that the two ends of the inner cylinder 5 are respectively installed in the corresponding first sealing cover 6 through bearings 10.

[0192] Compared to Example 1, Example 7 adds a second sealing cover 11. The principle is that the two ends of the inner cylinder 5 are respectively provided with a second sealing cover 11, and the second sealing cover 11 is fixed to the corresponding first sealing cover 6 by bolts 8 and nuts 7.

[0193] Compared to Example 1, Example 7 adds an arc-shaped connector 16. The principle is that an arc-shaped connector 16 is provided at one end of the crude oil inlet 2, and the arc-shaped connector 16 matches the shape of the outer cylinder 1 to form a tight contact.

[0194] In the mechanically sealed multi-port well valve of this utility model, the functions of each component are as follows:

[0195] The outer cylinder 1 serves as a valve body, supporting the internal structure and connecting to the crude oil inlet 2 to allow crude oil to enter.

[0196] Crude oil import 2 is designed on the outer cylinder 1 to ensure that the oil from the oil well can enter the outer cylinder 1.

[0197] The connecting pipe 3 is connected to the inner cylinder 5 and used as a valve core. Its purpose is to connect to a corresponding crude oil inlet 2 during rotation.

[0198] The inner cylinder 5, together with the connecting pipe 3, functions as a valve core to transmit oil.

[0199] The first sealing cap 6 is used to seal the outer cylinder 1, ensuring that its interior is a sealed structure and that the oil will not leak out.

[0200] The metering outlet 9 is connected to one end of the inner cylinder 5 to ensure that the oil collected during metering can flow out from the metering outlet 9.

[0201] A partition 14 is installed in the inner cylinder 5, dividing the inner cylinder 5 into two parts. The section with the flow hole is used to transfer oil from non-metered oil wells, while the other section without the flow hole is used to transfer metered oil.

[0202] Mixing outlet 15 is used to mix and discharge oil from non-metered oil wells.

[0203] The drive mechanism is used to drive the inner cylinder 5 to rotate, so as to ensure that the upper connecting pipe 3 is connected to the corresponding original inlet.

[0204] Drainage outlet 13 is used to periodically discharge impurities.

[0205] Support 12 is used to support the outer cylinder 1 to ensure that it does not shake during operation.

[0206] The bearing 10 is used for bearing and rotatably mounts the inner cylinder 5 in the outer cylinder 1.

[0207] The second sealing cap 11 is used to further seal the interior of the outer body 1 to ensure that no oil leakage occurs.

[0208] The arc-shaped connector 16 is used to match the shape of the outer cylinder 1 in order to form a tight contact.

[0209] It is evident that the valve body provides the cavity structure for the multi-port well selection valve, offering structural support and a fluid buffered flow path. This structure utilizes a side-opening circular chamber where crude oil mixes within the valve body. The valve core is a key component of the multi-port well selection valve. Its working part is typically made of wear-resistant and corrosion-resistant materials and designed with a sealing surface that matches the valve body's flow channel. The valve core changes the fluid flow path by rotating or moving. Different valve core positions allow for selection of the multi-port well selection valve's operating mode, enabling the selection of different crude oil inlets. Furthermore, when metering is not required, it can be rotated to a non-interface position to pause the metering function. In this structure, the valve core is composed of an inner cylinder and a connecting pipe. Rotation of the inner cylinder changes the connection direction of the connecting pipe. When the connecting pipe is connected to an existing inlet, dynamic metering begins; when the connecting pipe is connected to the valve body, metering ceases. The connecting pipe is a forged steel pipe used to connect the valve core and the valve body. It has high wear resistance and corrosion resistance, and its inner diameter is the same as the crude oil inlet, which can achieve a tight fit to the crude oil inlet and realize the guiding function of the crude oil flow pipeline. The first sealing cover ensures the sealing of the multi-way well selection valve. It is connected to the valve body (outer cylinder) by bolts to prevent fluid leakage. In this structure, the first sealing cover seals both ends of the valve body and has a mixing oil outlet and a metering oil outlet, ensuring the sealing of the valve body and the tight connection of the oil outlet. The partition is an internal structure of the valve core. In this structure, the partition divides the inner cylinder into two parts. One part serves as the channel for the mixing oil outlet and the other part serves as the channel for the metering oil outlet, ensuring that the stable operation of the two channels does not affect each other. The drain port is used in this mechanism to remove sediment during the crude oil metering process. Impurities carried in the crude oil may precipitate during transmission, which can easily lead to a reduction in the volume of the multi-way well selection valve, accelerated wear of the connecting pipe, and damage to the pump body. Therefore, the drain port is opened periodically to remove the sediment. The bevel gear and motor are the actuators of the multi-port well selection valve. The bevel gear allows the valve core to rotate at a certain angle, enabling the connecting pipe to open and close in several specified directions, thus achieving well selection. For manual well selection on-site, the handwheel can be turned to achieve manual selection without a clutch, automatically switching between manual and electric operation. The saddle-type support provides mechanical support for the multi-port well selection valve, ensuring its stable placement at the metering station.

[0210] The working principle of this utility model of a mechanically sealed multi-way well valve is implemented according to the following steps:

[0211] Step 1: During operation, crude oil enters through crude oil inlets 2 (referred to as N1~N6 respectively). At this time, the position of the connecting pipe is adjusted by the motor to select the crude oil inlet 2 that needs to be measured. In this embodiment, N1 is selected as the crude oil inlet connected to the connecting pipe 3. At this time, the crude oil in N1 enters the connecting pipe 3, passes through the inner cylinder 5 and enters the metering outlet 9. At this time, the multi-way well selection valve is used to dynamically measure the crude oil production of N1.

[0212] Step 2: Crude oil from the N2 to N6 inlets enters the outer cylinder. At this time, the crude oil from the five inlets is mixed. The outer cylinder 1 has sufficient space, and its circular inner wall can act as a buffer for the crude oil, allowing it to be fully mixed inside the outer cylinder 1.

[0213] Step 3: The crude oil mixed in the outer cylinder 1 flows out through the flow holes on the inner cylinder 5 into the mixing outlet. The flow holes are located on the side of the inner cylinder close to the mixing outlet. The evenly distributed flow holes on the cylinder ensure that there are inflow channels on both the upper and lower sides of the cylinder, ensuring that water, crude oil, and associated gas can all enter the mixing outlet and enter the subsequent production process.

[0214] Step 4: As the metering time for crude oil inlet N1 reaches its limit, the motor drives the bevel gear to move, transferring the connecting empty position. In this equipment, it should rotate 60° to connect with the next crude oil inlet N2 to achieve the metering of the next crude oil inlet's output. Bevel gears are selected because they provide precise and stable transmission, controlling the position of the connecting pipe. Designing the motor on the outer side of the cylinder facilitates motor inspection and maintenance. Furthermore, in the event of a power outage, the motor's valve can still drive the bevel gear to ensure metering continues.

[0215] Step 5: When the metering cycle is reached, open the drain port N7 to remove the impurities deposited inside the valve carried by the crude oil. This can effectively reduce the impurities inside the valve and prevent the connecting pipe from being worn and damaged by impurities during use.

[0216] Step 6: When all the crude oil inlets connected to the multi-channel well valve have been metered within one metering cycle, the motor drives the actuator gear to rotate the connecting pipe by 30°. At this time, the connecting pipe and the inner wall of the outer cylinder form a mechanical seal, and the crude oil from all the crude oil inlets flows out from the mixing outlet after being mixed, thus pausing the metering function.

[0217] Compared with the current new multi-port well valves, the mechanical seal of this utility model can reduce the number of parts at the connection point and reduce costs while ensuring sealing requirements; the valve core unifies the metering oil outlet on the inner cylinder, reducing one of the pressure-bearing mechanical mating surfaces in the valve body, further reducing the risk of internal leakage and improving equipment reliability and the convenience of disassembly and maintenance; the design of the drain port provides a new way of valve maintenance, which can stabilize the degree of impurity deposition in the valve and protect the stable working performance of the mechanical mating surfaces.

[0218] The foregoing description illustrates and describes several preferred embodiments of the utility model. However, as previously stated, it should be understood that the utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the utility model concept described herein through the foregoing teachings or the technology or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the utility model should be within the protection scope of the appended claims.

Claims

1. A mechanically sealed multi-port well valve, characterized in that, The outer cylinder (1) is provided with a first sealing cap (6) at both ends of the outer cylinder (1). An inner cylinder (5) is rotatably provided inside the outer cylinder (1). Both ends of the inner cylinder (5) extend from the first sealing cap (6). One end of the inner cylinder (5) is connected to a mixing oil outlet (15), and the other end of the inner cylinder (5) is connected to a metering oil outlet (9). A partition (14) is provided inside the inner cylinder (5). A flow hole is provided on the outer wall of the inner cylinder (5) between the mixing oil outlet (15) and the partition (14). A connecting pipe (3) is provided on the side of the inner cylinder (5). Multiple crude oil inlets (2) and a drive mechanism that drives the inner cylinder (5) are provided on the outside of the outer cylinder (1).

2. The mechanically sealed multi-port well valve according to claim 1, characterized in that, The drive mechanism includes a motor (17), the drive end of which is connected to a first bevel gear (18), the first bevel gear (18) meshing with a second bevel gear (4), and the second bevel gear (4) fixed to the outside of the inner cylinder (5).

3. The mechanically sealed multi-port well valve according to claim 2, characterized in that, The bottom of the outer cylinder (1) is provided with a drain outlet (13).

4. The mechanically sealed multi-port well valve according to claim 3, characterized in that, The bottom of the outer cylinder (1) is provided with a pair of supports (12).

5. The mechanically sealed multi-port well valve according to claim 4, characterized in that, The support (12) is a saddle support.

6. The mechanically sealed multi-port well valve according to claim 5, characterized in that, The two ends of the inner cylinder (5) are respectively installed in the corresponding first sealing cover (6) by bearings (10).

7. The mechanically sealed multi-port well valve according to claim 6, characterized in that, The inner cylinder (5) is provided with a second sealing cover (11) at both ends. The second sealing cover (11) is fixed to the corresponding first sealing cover (6) by bolts (8) and nuts (7).

8. The mechanically sealed multi-port well valve according to claim 7, characterized in that, Multiple crude oil imports (2) are arranged at the same angle.

9. The mechanically sealed multi-port well valve according to claim 8, characterized in that, An arc-shaped connector (16) is provided at one end of the crude oil inlet (2), and the arc-shaped connector (16) matches the shape of the outer cylinder (1).

10. The mechanically sealed multi-port well valve according to claim 9, characterized in that, The quantity of crude oil imports (2) is six.

11. The mechanically sealed multi-port well valve according to claim 10, characterized in that, The motor (17) is a stepper motor.

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