Hydraulic weight type cock valve for X runner pump station

Abstract

The present application relates to a kind of hydraulic weight cock valves for X flow channel pump station, belong to water channel control equipment technical field, including shell, with lower flow channel, left flow channel and right flow channel, the shell is equipped with with lower flow channel, left flow channel and right flow channel Communication three-way pipeline is equipped;Valve core, installation in the three-way pipeline inside and with its rotating connection;The valve core is equipped with two-way pipeline, when valve core rotates in shell, two-way pipeline cooperates the three-way pipeline of shell and forms left pass position, interruption position and right pass position respectively;Driving element, for driving valve core rotation to realize the switching of left pass position, interruption position and right pass position.The hydraulic weight cock valve of the present application compared with the arrangement scheme of traditional 2 butterfly valves plus 2 flap valves or 2 gate valves plus 2 quick opening and closing machines on X flow channel upper layer, uses 1 piece of equipment to replace 4 pieces of equipment, reduces the number of equipment, reduces construction cost and operating cost, and has high reliability.

Description

Technical Field

[0001] This invention relates to the field of waterway control equipment technology, specifically a hydraulic counterweight plug valve for X-channel pumping stations. Background Technology

[0002] A bidirectional inlet and outlet pumping station employing a vertical axial flow pump unit typically uses an X-shaped flow channel. The pump unit is positioned in the center of the flow channel, with two inlets on the lower level and two outlets on the upper level. Each inlet and outlet is equipped with dedicated control equipment. The pumping station's operation is generally controlled by opening and closing the four inlets and outlets of the X-channel to regulate the drainage direction.

[0003] There are generally two existing waterway control methods: one is to install one butterfly valve and one flap valve at each of the two outlets on the upper layer of the X-channel. The butterfly valve controls the flow channel opening and closing to switch the drainage direction, and the flap valve controls the main pump unit to stop and cut off the flow. The other is to install one gate at each of the two outlets on the upper layer of the X-channel. The gate is equipped with a quick-closing mechanism. The opening and closing of the gate controls the drainage direction, and the quick-closing mechanism controls the main pump unit to stop and cut off the flow.

[0004] If the existing control method is adopted, the upper flow channel outlet of one water pump unit needs to be equipped with two butterfly valves and two flap valves, or two gate valves and two fast opening and closing machines, which results in high project costs. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic counterweight plug valve for X-channel pumping stations to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A hydraulic counterweight plug valve for X-channel pumping stations, comprising: The housing has a lower flow port, a left flow port and a right flow port, and the housing is provided with a three-way pipe that communicates with the lower flow port, the left flow port and the right flow port; The valve core is installed inside the three-way pipe and rotatably connected to it; the valve core has two-way pipes inside, and when the valve core rotates in the housing, the two-way pipes cooperate with the three-way pipe of the housing to form a left-hand position, an interrupted position and a right-hand position respectively; The driving component is used to drive the valve core to rotate to switch between left-pass, interrupted, and right-pass positions.

[0007] As a further technical solution of the present invention, the driving component includes: A swing cylinder is fixedly mounted on the housing and connected to the valve core, used to drive the valve core to rotate.

[0008] As a further technical solution of the present invention, the driving component further includes: A counterweight is fixedly installed on the rotating shaft extending from the valve core housing, and is used to cooperate with the swing cylinder to drive the valve core to rotate.

[0009] As a further technical solution of the present invention, the housing includes: Two main half-shells, which cooperate with each other and are fixedly connected; The center tube is fixedly installed inside the lower flow channel opening; Two left and right position tubes are installed in the left flow channel opening and the right flow channel opening respectively; The first dynamic seal is installed at the end of the center tube and the left and right tubes near the valve core. The second dynamic seal is installed at the end of the center tube and the left and right tubes near the valve core. It works in conjunction with the first dynamic seal to ensure the water sealing effect between the shell and the valve core when the valve stops and rotates, thus preventing leakage inside the valve.

[0010] As a further technical solution of the present invention, the two main half-shells are connected and fixed by connecting bolts, and a static seal is installed between the two main half-shells; one end of the central tube is connected to the main half-shell by a flange, bolts and a static seal, and the other end is connected to the pressure steel pipe of the X-channel by a flange, bolts and a static seal; one end of the left and right position tubes is connected to the main half-shell by a flange, bolts and a static seal, and the other end is connected to the pressure steel pipe of the X-channel by a flange, bolts and a static seal.

[0011] As a further technical solution of the present invention, the housing further includes: A coupling sleeve is fixedly installed on the main half-shell. A bearing is installed inside the coupling sleeve and is sleeved outside the valve core's rotating shaft to support the rotation of the valve core. The first shaft seal is installed between the bearing and the coupling sleeve; The second shaft seal is installed between the bearing and the coupling sleeve to cooperate with the first shaft seal to seal the space between the bearing and the coupling sleeve.

[0012] As a further technical solution of the present invention, the counterweight is connected to the rotating shaft of the valve core by bolts and splines.

[0013] As a further technical solution of the present invention, the valve core surface is a spherical sealing surface that matches the inner wall of the housing, and the two-way pipe is a bend, with the two ends of the bend matching the lower flow port, the left flow port, and the right flow port, respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Compared with the traditional arrangement of 2 butterfly valves and 2 flap gates or 2 gate valves and 2 quick-opening and closing machines in the upper layer of the X-channel, 1 piece of equipment replaces 4 pieces of equipment, reducing the number of equipment and lowering construction and operating costs; 2. When the pump station stops and the flow is interrupted, the power is provided by the counterweight, which is not affected by the circuit or liquid system. It can still interrupt the flow in case of accidents such as leakage or power failure, thus protecting the unit and ensuring high reliability. 3. The valve has no abrupt changes or obstructions in the flow path inside, resulting in good hydrodynamic performance. Compared with various butterfly valves and plug valves, the valve of this invention has less local loss. Attached Figure Description

[0015] Figure 1 An isometric view of a hydraulic counterweight plug valve used in an X-channel pumping station; Figure 2 A half-sectional isometric view of a hydraulic counterweight plug valve used in an X-channel pump station. Figure 3 A cross-sectional view of a hydraulic counterweight plug valve used in an X-channel pump station. Figure 4 A longitudinal sectional view of a hydraulic counterweight plug valve used in an X-channel pump station. Figure 5 An exploded view of the isometric assembly of a hydraulic counterweight plug valve used in an X-channel pump station. Figure 6 This is a schematic diagram of the hydraulic counterweight plug valve used in the X-channel pump station in the left-hand position. Figure 7 This is a schematic diagram of the hydraulic counterweight plug valve used in the X-channel pump station when it is in the stop position. Figure 8 This is a schematic diagram of the hydraulic counterweight plug valve used in the X-channel pump station in the right-hand position.

[0016] In the diagram: 1-Housing, 11-Main half-housing, 12-First dynamic seal, 13-Second dynamic seal, 14-Left and right position tubes, 15-Middle position tube, 16-Coupling sleeve, 17-Bearing, 18-First shaft seal, 19-Second shaft seal, 2-Valve core, 3-Flat hammer, 4-Swing cylinder. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] The embodiments of the present invention are implemented as follows, such as... Figures 1 to 8 The hydraulic counterweight plug valve shown for the X-channel pump station includes: The housing 1 is provided with a lower flow port, a left flow port and a right flow port, and a three-way pipe connected to the lower flow port, the left flow port and the right flow port is provided inside the housing 1; Valve core 2 is installed inside the three-way pipe and rotatably connected to it; the valve core 2 is provided with two-way pipes, and when the valve core 2 rotates inside the housing 1, the two-way pipes cooperate with the three-way pipe of the housing 1 to form a left-hand position, an interrupted position and a right-hand position respectively; The driving component is used to drive the valve core 2 to rotate to switch between left-pass, interrupted, and right-pass positions.

[0019] In practical applications, this invention uses a driving component to drive the valve core 2 to rotate within the housing 1, thereby achieving the switching between three positions: left-pass, interrupted, and right-pass. Figure 6 As shown, in the left-hand position, the lower flow channel and left flow channel opening of housing 1 are connected by valve core 2, with the flow going in from the bottom and out from the left; as... Figure 7 As shown, at the interrupted position, the lower, left, and right flow channels of housing 1 are all blocked by the spherical surface of valve core 2, and all flow channels are closed; as Figure 8 As shown, in the right-hand flow position, the lower flow channel and the right flow channel opening of the housing 1 are connected by the valve core 2, with the flow in from the bottom and the flow out from the right. Compared with the traditional arrangement of using two butterfly valves and two flap valves or two gate valves and two quick-opening and closing machines in the upper layer of the X flow channel, one piece of equipment replaces four pieces of equipment, reducing the number of equipment and lowering construction and operating costs. Preferably, the surface of the valve core 2 is a spherical sealing surface that matches the inner wall of the housing 1, and the two-way pipe is a bend. The two ends of the bend match the lower flow channel opening, the left flow channel opening, and the right flow channel opening, respectively. When the water flows through, the flow channel does not suddenly expand or contract, and there is no obstruction structure. Compared with the common slide valve or ball valve type plug valve, the local loss is small, which can improve the overall efficiency of the pumping station.

[0020] like Figures 1 to 5 As shown, in a preferred embodiment of the present invention, the driving component includes: The swing cylinder 4 is fixedly installed on the housing 1 and connected to the valve core 2, and is used to drive the valve core 2 to rotate. The counterweight 3 is fixedly installed on the rotating shaft of the valve core 2 extending out of the housing 1, and is used to cooperate with the swing cylinder 4 to drive the valve core 2 to rotate.

[0021] In one embodiment, for ease of connection, the counterweight 3 is connected to the rotating shaft of the valve core 2 via bolts and splines. Specifically, in actual operation, when moving from the interrupted position to the left-hand position, the swing cylinder 4 drives the valve core 2 to rotate counterclockwise by approximately 144°, and the counterweight 3 rotates and rises synchronously. When moving from the interrupted position to the right-hand position, the swing cylinder 4 drives the valve core 2 to rotate clockwise by approximately 144°, and the counterweight 3 rotates and rises synchronously. When moving from the left-hand position to the interrupted position, the counterweight 3 moves downward under gravity, causing the valve core 2 to rotate clockwise by approximately 144°. When moving from the right-hand position to the interrupted position, the counterweight 3 moves downward under gravity, causing the valve core 2 to rotate counterclockwise by approximately 144°. When realizing the pump station shutdown and flow interruption function, the counterweight 3 provides power and is not affected by the circuit or liquid system. It can still interrupt the flow in the event of leakage, power failure, or other accidental conditions, protecting the unit and demonstrating high reliability.

[0022] like Figures 1 to 5 As shown, in another preferred embodiment of the present invention, the housing 1 includes: The two main half-shells 11 are mutually fitted and fixedly connected; The center tube 15 is fixedly installed inside the lower flow channel opening; Two left and right position tubes 14 are installed in the left flow channel opening and the right flow channel opening respectively; The first dynamic seal 11 is installed at the end of the middle position tube and the left and right position tubes near the valve core 2; The second dynamic seal 12 is installed at the end of the center tube and the left and right tubes near the valve core 2. It works in conjunction with the first dynamic seal 11 to ensure the water sealing effect between the housing 1 and the valve core 2 when the valve stops and rotates, and to prevent leakage inside the valve. The coupling sleeve 16 is fixedly installed on the main half-shell 11; The bearing 17 is installed inside the coupling sleeve 16 and is sleeved on the outside of the rotating shaft of the valve core 2 to support the rotation of the valve core 2. The first shaft seal 18 is installed between the bearing 17 and the coupling sleeve 16; The second shaft seal 19 is installed between the bearing 17 and the coupling sleeve 16, and is used to cooperate with the first shaft seal 18 to seal the space between the bearing 17 and the coupling sleeve 16.

[0023] In one embodiment, the housing 1 is divided into blocks, including two main half-shells 11, one central tube 15, and two left and right position tubes 14. Each block of the housing 1 is connected to each other by flanges and bolts, and each block is provided with a static seal to stop water flow. The valve core 2 and the three holes of the housing 1 are fitted with two dynamic seals, namely the first dynamic seal 12 and the second dynamic seal 13. One end of the central tube is connected to the main half-shell by flanges, bolts, and a static seal, and the other end is connected to the pressure steel pipe of the X-channel by flanges, bolts, and a static seal. One end of the left and right position tubes is connected to the main half-shell by flanges, bolts, and a static seal, and the other end is connected to the pressure steel pipe of the X-channel by flanges, bolts, and a static seal. The counterweight 3 acts as an energy storage element, raising to store energy when the left or right passage is reached, and lowering to release energy when the passage is interrupted.

[0024] Working Principle: The three workstations of this invention can be switched in the order of left-hand, interrupted, and right-hand operation, or in reverse order, but cannot be directly switched between left-hand and right-hand workstations to avoid misoperation during operation. This invention uses a counterweight 3 as the power source for closing the valve, ensuring that the valve can still close even without external power, and promptly sealing the orifice when the water pump stops to prevent pump reversal and protect the unit. This invention uses a swing hydraulic cylinder drive, which can be integrated into the pump station's hydraulic system, becoming an actuator within the hydraulic system. In the absence of a hydraulic system, it can also be equipped with a separate hydraulic component, making it an integrated swing hydraulic cylinder. When needed, this invention can also control the partial opening and speed of valve opening and closing through the swing hydraulic cylinder control to meet the various needs of the main pump unit's start-up, shutdown, and operation, making it more practical.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic counterweight plug valve for X-channel pump stations, characterized in that, include: The casing has a lower flow channel, a left flow channel, and a right flow channel. The lower flow channel is the inlet side of the upper outlet of the X-channel pump station water pump unit, and the left and right flow channels are the outlet sides. The casing is equipped with a three-way pipe that connects to the lower flow channel, the left flow channel, and the right flow channel. A valve core is installed inside and rotatably connected to the three-way pipe; the surface of the valve core is a spherical sealing surface that mates with the inner wall of the housing; the valve core has a bend serving as a two-way pipe, with its two ends mate with the lower flow port, the left flow port, and the right flow port, respectively; when the valve core rotates inside the housing, the bend, in conjunction with the three-way pipe of the housing, forms a left-pass position, an interrupted position, and a right-pass position, respectively; in the left-pass position, the lower flow port is connected to the left flow port, and the right flow port is blocked by the spherical sealing surface of the valve core; When in the right-pass position, the lower flow port is connected to the right flow port and the left flow port is blocked by the spherical sealing surface of the valve core; when in the interrupt position, the lower flow port, the left flow port and the right flow port are all blocked by the spherical sealing surface of the valve core. The driving component includes a swing cylinder and a counterweight. The swing cylinder is fixedly mounted on the housing and connected to the valve core. The counterweight is fixedly mounted on the rotating shaft of the valve core extending out of the housing by bolts and splines. When moving from the interrupted position to the left-pass position, the swing cylinder drives the valve core to rotate 144° counterclockwise, and the counterweight rotates and rises synchronously to store energy. When moving from the interrupted position to the right-pass position, the swing cylinder drives the valve core to rotate 144° clockwise, and the counterweight rotates and rises synchronously to store energy. When moving from the left-pass position to the interrupted position, the counterweight moves downward under gravity to release energy and drives the valve core to rotate 144° clockwise. When moving from the right-pass position to the interrupted position, the counterweight moves downward under gravity to release energy and drives the valve core to rotate 144° counterclockwise. The left-pass, interrupted, and right-pass positions are switched in the order of left-pass-interrupted-right-pass or in reverse order; the left-pass and right-pass positions are not directly switched. The housing includes two main half-shells, a center tube, two left and right position tubes, a first dynamic seal, and a second dynamic seal. The two main half-shells cooperate with each other and are connected and fixed by connecting bolts. A static seal is installed between the two main half-shells. The center tube is fixedly installed in the lower flow channel opening. The two left and right position tubes are respectively installed in the left flow channel opening and the right flow channel opening. The first dynamic seal is installed at the end of the center tube and the left and right position tubes near the valve core. The second dynamic seal is installed at the end of the center tube and the left and right position tubes near the valve core, and is used to cooperate with the first dynamic seal to ensure the water sealing effect between the housing and the valve core and prevent leakage inside the valve when the valve stops and rotates. One end of the central tube is connected to the main half-shell via a flange, bolts, and a static seal, and the other end is connected to the pressure steel pipe of the X-channel via a flange, bolts, and a static seal; one end of the left and right tubes is connected to the main half-shell via a flange, bolts, and a static seal, and the other end is connected to the pressure steel pipe of the X-channel via a flange, bolts, and a static seal. The housing also includes a coupling sleeve, a bearing, a first shaft seal, and a second shaft seal; the coupling sleeve is fixedly installed on the main half-shell; the bearing is installed inside the coupling sleeve and is sleeved on the outside of the valve core's rotating shaft to support the rotation of the valve core; the first shaft seal is installed between the bearing and the coupling sleeve; the second shaft seal is installed between the bearing and the coupling sleeve to cooperate with the first shaft seal to seal the space between the bearing and the coupling sleeve.

2. The hydraulic counterweight plug valve for X-channel pumping stations according to claim 1, characterized in that: The swing cylinder is integrated into the hydraulic system of the X-channel pump station as the actuator of the hydraulic system; or, the swing cylinder is configured with independent hydraulic components to form an integrated swing hydraulic cylinder.

3. The hydraulic counterweight plug valve for X-channel pumping stations according to claim 1, characterized in that: The swing cylinder controls the valve core to partially open between the interrupted position and the left-hand position or between the interrupted position and the right-hand position, as well as to adjust the opening and closing speed, so as to meet the needs of the main pump unit for start-up, shutdown and operation.

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