CN104565456B - Dual control flap valve - Google Patents

Abstract

A double-control flapper, comprising a flapper seat and a flapper cover, the upper part of the flapper cover is hinged to the flapper seat, a through hole for fluid to flow is opened on the flapper seat, and the flapper The front of the cover is covered on the through hole; the flap door also includes a flap door control system for the flap door cover to still be closed and openable under the high pressure state inside the flap door, and the action end of the flap door control system is connected to the The flapper cover fits. The invention provides a double-control flap valve with good controllability, the function of still closing the flap door under high internal water pressure, and suitable for bidirectional flow channel occasions. The double-control flap door used in combination can also be applied to buildings such as river barrages. Materials and processes need to be diverted and processed in various occasions.

Description

double control door

technical field

The invention relates to a valve structure in a flow channel, in particular to a flap valve.

Background technique

Existing flap door is mainly installed at the outlet of river side drainage pipe, a kind of one-way check valve that has the function of preventing external water from pouring back. When the tide level of the river is higher than the outlet pipe and the pressure is greater than the pressure inside the pipe, the panel of the flap will automatically close; when the pressure inside the pipe is greater than the pressure of the water outside the river, the flap will open against its own weight, and the inner water will be discharged outside.

The material of flap door is divided into multiple materials such as stainless steel, cast iron, section steel, composite material (glass reinforced plastics). At present, the development direction of the flap door in the market is light weight, high strength, quick opening, and small water head loss.

Traditional flap valves are one-way control with good synchronization performance. They are often used at the outlet of one-way water pumps and cannot be applied to two-way pump stations. The two-way pumping station adopts double-layer two-way flow channels, and fast gates and hoists are used for cutting off the flow. According to the hoist type and hydraulic hoist series parameters (SL507-2010, SL508-2010) (Ministry of Water Resources of the People's Republic of China), the door opening speeds are 1.8-5m/s and 0.5-1.5m/s respectively, and there are gate opening speeds. Disadvantage of being out of sync with turning on the pump. The water impact and overflow caused by the asynchronous pump and gate will cause vibration and even serious accidents to the double-channel submersible pump with unreliable connection. Therefore, the layout of the double-channel submersible pump is rarely used at present; Ancillary buildings, automatic control, computer monitoring and other investment are relatively large, and pumping station management has invested a lot of energy. For specific pumping station projects, the investment in gate opening and closing equipment will increase by more than 1/2.

The existing technical defect of the flap door is that the function is single, uncontrollable, and there is no function that the flap door is still closed under high internal water pressure.

Contents of the invention

In order to overcome the deficiencies of the existing flap valves, which have single function, uncontrollability, no function that the flap door remains closed under high internal water pressure, and cannot be applied to the occasions of bidirectional flow channels, the present invention provides a valve with good controllability and high internal water high pressure. The function that the flap door is still closed is a dual-control flap door suitable for two-way runners.

The technical solution adopted by the present invention to solve its technical problems is:

A dual-control flapper, comprising a flapper seat and a flapper cover, the upper part of the flapper cover is hinged to the flapper seat, and a through hole for fluid to flow is opened on the flapper seat, and the flapper The front cover of the cover is covered on the through hole; the flap door also includes a flap door control system for the flap door cover to still be closed and openable under the high pressure state inside the flap door, and the action end of the flap door control system is connected to the The flapper cover fits.

Further, the flap gate control system includes a positioning member and a flap gate control device, the flap gate cover is provided with a positioning member on the back side, and the flap gate control device is arranged on the fixed member on the opposite side of the hinge seat of the flap gate cover, so that The flap door control device includes a jacking member and a drive assembly for controlling the telescopic movement of the jacking member, the action end of the drive assembly is connected with the jacking member, and when the jacking member is at a limit position, the The top end of the jacking member cooperates with the positioning member to clamp the flap seat and the flap cover. When the jacking member is in the free position, the top end of the jacking member is located outside the opening trajectory of the flap cover. The program is an external program.

Alternatively, the flap gate control system includes a positioning member, the flap gate cover is provided with a positioning member on the front side, and a flap gate control device is arranged on the opposite side of the hinge seat of the flap gate seat, and the flap gate control device includes a top The driving component and the driving assembly for controlling the telescopic movement of the pushing component, the action end of the driving component is connected with the pushing component, when the pushing component is at the limit position, the top end of the pushing component is connected with the pushing component The positioning member cooperates with the clapper seat, and when the pushing member is in the free position, the top end of the pushing member is separated from the positioning member. This program is a built-in program.

Further, the drive assembly is a hydraulic drive mechanism, a pneumatic drive mechanism, an electromagnetic drive mechanism, an electric drive mechanism or a mechanical drive mechanism. The mechanical drive mechanism includes a drive motor and a telescopic mechanism for converting rotation into linear motion. Of course, other driving methods may also be used.

Still further, the dual-control flap gate is a joint flap gate composed of at least two flap gates. Various valves can be used in combination as required.

The positioning member is provided with a positioning hole, and the top end of the jacking member is provided with a positioning block, and the positioning block cooperates with the positioning hole. This is a commonly used method of cooperation, and other methods can also be used.

The positioning member is integrated with the back side of the flapper cover. This method belongs to one-piece molding, and the positioning member can be made together when making the flap door.

The jacking member is a jacking rod or a jacking block. This is a commonly used selection method, of course, other methods can also be used.

The technical idea of the present invention is: in order to overcome the traditional flap door which can only operate in one direction (i.e. open), it has the dual control function of still being closed and openable under high liquid level, and realizes the two-way synchronous function of opening the pump gate.

Taking the double-layer two-way flow channel system as an example, when the water pump is turned on, under the action of liquid pressure, the double-control flap door realizes the opening and closing functions similar to the fast gate under different hydraulic conditions: when the double-control flap door is in the open state, it belongs to The synchronization performance of the traditional flap door is better than that of the fast gate; when the controllable flap door is closed, the flow-cutting function is realized under the external force of the flap door control system, and the water-stopping performance is comparable to that of the fast gate, while the traditional flap door operates at a high liquid level. Down can only be turned on, not cut off. The dual-control flap valve is low in cost, simple in structure, reliable in operation, and completely synchronous with the water pump, so that the pump station will not cause vibration and overflow accidents, and can meet the market demand for products that the flap door can still be closed and open under high internal water pressure.

The beneficial effects of the present invention are mainly manifested in: good controllability, the function of still closing the flap door under high internal water pressure, and being suitable for the occasion of two-way flow channels. The comprehensive application of the two-way flap door has revolutionary guiding significance for the construction of traditional river barrage buildings.

Description of drawings

Figure 1 is a schematic diagram of an external dual-control flapper.

Figure 2 is a schematic diagram of the built-in double-control flap door

Fig. 3 is a schematic diagram of a double-layer bi-directional channel system of a vertical submersible axial flow pump using a double-control flapper.

Fig. 4 is a schematic diagram of a drainage and irrigation sluice using double-control flap gates.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 4, a dual-control flapper door includes a flapper seat 1 and a flapper cover 2, the flapper cover 2 is hinged to the flapper seat 1 above, and the flapper seat 1 has a A through hole for fluid to flow through, and the front side of the flap door cover 2 is covered on the through hole; the flap door also includes a flap door that is still closed and can be opened under the high pressure state inside the flap door control system, the action end of the flap door control system cooperates with the flap door cover 2 .

Further, the flap gate control system includes a positioning member 3 and a flap gate control device, the back side of the flap gate cover 2 is provided with a positioning member 3, and the flap gate control system is arranged on the fixed member on the opposite side of the hinge seat of the flap gate cover. device, the flap door control device includes a jacking member 4 and a driving assembly 5 used to control the telescopic movement of the jacking member, the action end of the driving assembly 5 is connected with the jacking member 4, when the jacking member 4 is at the highest position, the top of the jacking member 4 cooperates with the positioning member 3 (at this time, the flap door can be closed), and when the jacking member 4 is at the lowest position, the jacking member 4 4. The top is located outside the opening track line of the flap cover. The program is an external program.

Or: the flap door control system includes a positioning member 3, the front of the flap door cover 2 is provided with a positioning member 3, and a flap door control device is arranged on the opposite side of the hinge seat of the flap door seat 1, and the flap door The control device includes a jacking member 4 and a drive assembly 5 used to control the telescopic movement of the jacking member. The action end of the drive assembly 5 is connected to the jacking member 4. When the jacking member 4 is in a limiting position, The top end of the jacking member 4 cooperates with the positioning member 3 to clamp the flap seat, and when the jacking member 4 is in the free position, the top end of the jacking member 4 is separated from the positioning member 3 . This program is a built-in program.

The drive assembly 5 is a hydraulic drive mechanism, a pneumatic drive mechanism, an electromagnetic drive mechanism, an electric drive mechanism or a mechanical drive mechanism. The mechanical drive mechanism includes a drive motor and a telescopic mechanism for converting rotation into linear motion. Of course, other driving methods may also be used.

Still further, the dual-control flap gate is a joint flap gate composed of at least two flap gates. Various valves can be used in combination as required.

The positioning member 3 is provided with a positioning hole, and the top end of the jacking member 4 is provided with a positioning block, and the positioning block cooperates with the positioning hole. This is a commonly used method of cooperation, and other methods can also be used.

The positioning member 3 is integrated with the back side of the shutter cover 2 . This method belongs to one-piece molding, and the positioning member can be made together when making the flap door.

The jacking member 3 is a jacking rod or a jacking block. This is a commonly used selection method, of course, other methods can also be used.

Referring to Fig. 3, the double-control flap gate of this embodiment is applied to the double-layer bidirectional flow channel system of the vertical submersible axial flow pump, and the upper drainage side and the upper outlet side of the upper flow channel are all according to the dual-control flap gate, The flap control system is pre-embedded on the main structure (external), and of course the flap control system can also be built-in. The flap door control system can be hydraulic, pneumatic, electromagnetic, electric or mechanical hang-off device and other schemes. The flap valve control system enables the traditional flap valve to have the double control function of being still closed and openable under high liquid level. The control system is illustrated by taking the hydraulic scheme as an example.

First add welding positioning component 3 on the traditional flapper cover 2, and pre-embed the hydraulic cylinder on the main structure, and the telescopic end of the hydraulic cylinder can be freely expanded and contracted as the jacking component 4.

The drive assembly of the flap door control system acts to control the jacking member 4 to push against the positioning member 3 when it is extended. At this time, the flap door is locked, and the flap door cover 2 is still closed under the high liquid level of the upper flow channel; When the door needs to be opened automatically, the jacking member 4 is controlled to retract to the original position (not the state of the dotted line). The function is in the state of waiting to be opened. Once the pump is started, the valve will discharge synchronously.

The flap door control system of the hydraulic scheme, especially the built-in hydraulic scheme, makes full use of the principle of leverage. It is simple and compact, easy to process, compact and smooth in the original position, and well protected. It is suitable for all types of flap doors in the current situation. The manual hydraulic device (small oil pipes can be pre-embedded and led to the upper structural layer for land operation) can also realize the control function of the flap valve, without the need for fast opening and closing equipment, it can realize the two-way fully synchronous operation function of the pump and the dual-control flap valve, which solves the problem In the two-way pumping station, the problem that the opening of the pump gate cannot be completely synchronized or the traditional valve is not available.

The vertical submersible axial flow pump is an integrated structure of the pump and machine, and it is arranged underwater. The connection must not be fixed and firm. In order to avoid vibration and overflow accidents, the vertical submersible axial flow pump is used in the double-layer flow channel, and the pump and gate valve are required. Better synchronization performance between. The vertical submersible axial flow pump has double-layer channels and double-controlled flap doors, which are suitable for bidirectional drainage and outflow of all liquids. The door pumps are fully synchronized and only one water pump is required.

Referring to FIG. 4 , the dual-control flap gate of this embodiment is applied to irrigation and drainage sluices. In water conservancy projects, double-control flap gates can be used in river barrage structures for water storage, flood control and tide control, irrigation and drainage. Traditional barrage structures include sluice gates, rubber dams and flap dams. By setting up two mother-child dual-control flap doors, using the sub-valve doors and joint flap gate groups on the mother-child dual-control flap doors, drainage and irrigation automation can be realized; by setting up a dual-control flap door, waterlogging or irrigation automation can be realized; when floods and tides are blocked , external water high pressure, double-control flap valve with traditional flap valve cut-off function, automatic closing, safe and labor-saving; through the establishment of a shared maintenance gate, under the action of still water, the flap door can be reset and closed tightly. Since the net width of the gate hole of the sluice is generally 0.6-0.85 the width of the river channel, the double-control flap gate is used instead of the traditional gate sluice gate, which can be as wide as the river channel, which enhances the outflow capacity of the gate hole and reduces the energy dissipation facilities and sluice gates during outflow. The upper and lower reaches are connected to the wing wall, no superstructure is required, and the traffic on the top of the gate is smooth. Because the double-control flap gate does not require hoisting equipment and superstructure buildings, the structure of the lock chamber is light and symmetrical, the load is uniform, and the difficulty of foundation treatment is greatly reduced, especially for the sluice on the soft soil foundation, which can save a lot of engineering investment; make full use of hydraulic conditions and levers The principle, automatic opening and closing, can save the country's electric energy and operating costs. The sluice using two-way flap gates can replace rubber dams and flap dams. It has the characteristics of hydrophilic beauty, durability, convenient maintenance and low operating costs. The comprehensive application of the two-way flap door has revolutionary guiding significance for the construction of traditional river barrage buildings.

Third, in the ship lock water delivery system, the double-control flap door can be opened at a high liquid level as needed. When the water level inside and outside the lock is the same, the flap door will automatically close and enter the "still closed state", so that the ship enters and exits the lock room smoothly. ; In addition, by monitoring the "still closed state", the speed of ship dispatching can be accelerated. The traditional lock water delivery system adopts gate control, which requires hoist equipment, superstructure and operation time. Therefore, the development of dual-control flap gate technology can replace flap gates (including joint flap gates combined with several flap gates) to manufacture traditional gates for ship lock water delivery systems within the size range, save the number of hoists, and perform digital rapid monitoring.

Fourth, it involves rainwater, sewage, tap water in water supply and drainage, petroleum and chemical industries. Due to process needs, fluids need to be distributed and treated, such as two or more diversion gates or valves to control the flow into the next process.

Finally, the embodiment of the dual-control flapper gate can be extended to a gate valve with dual-control function in one-way flow, from general to partial fluid diversion due to process requirements. It is characterized by "double control", which can still close and open under high pressure inside, and close by its own gravity when the pressure on both sides is the same or the external pressure is large, with good synchronization performance and no need for opening and closing equipment.

Claims (7)

1. A double-control flap door, comprising a flap door seat and a flap door cover, the top of the flap door cover is hinged with the flap door seat, and a through hole for fluid to flow is provided on the flap door seat, the The front cover of the flap door is covered on the through hole; it is characterized in that: the flap door also includes a flap control system for the flap door cover to still be closed and openable under the high pressure state inside the flap door, and the flap door The action end of the control system cooperates with the flap door cover; the flap door control system includes a positioning member, the front of the flap door cover is provided with a positioning member, and the flap door control device is arranged on the opposite side of the hinge seat of the flap door seat, The shutter control device includes a jacking member and a drive assembly for controlling the telescopic movement of the jacking member. The action end of the drive assembly is connected to the jacking member. The top end of the jacking member cooperates with the positioning member to clamp the flap seat, and when the jacking member is in the free position, the top end of the jacking member is separated from the positioning member. 2. A dual-control flap, comprising a flap seat and a flap cover, the top of the flap cover is hinged to the flap seat, the flap seat is provided with a through hole for fluid to flow through, the flap The front cover of the flap cover is covered on the through hole; the flap door also includes a flap control system for the flap door cover to still be closed and openable under the high pressure state inside the flap door, and the action of the flap door control system It is characterized in that: the flap control system includes a positioning member and a flap control device, the back of the flap cover is provided with a positioning member, and the hinge seat of the flap is opposite to the flap cover. A flap door control device is arranged on the side fixed member, and the flap door control device includes a jacking member and a driving assembly for controlling the telescopic movement of the jacking member, and the action end of the driving assembly is connected with the jacking member. When the jacking member is at the limit position, the top end of the jacking member cooperates with the positioning member to clamp the flapper seat and the flapper cover; when the jacking member is at the free position, the top end of the jacking member is at the outside the opening trajectory of the flap door cover described above. 3. The double control flap door according to claim 1 or 2, characterized in that: the drive assembly is a hydraulic drive mechanism, a pneumatic drive mechanism, an electromagnetic drive mechanism, an electric drive mechanism or a mechanical drive mechanism. 4. The dual-control flap gate according to claim 1 or 2, characterized in that: the dual-control flap gate is a combined flap gate composed of at least two flap gates. 5. The double control flap door according to claim 1 or 2, characterized in that: the positioning member is provided with a positioning hole, the top of the jacking member is provided with a positioning block, and the positioning block is connected to the positioning hole fit. 6. The double-control flap door according to claim 1 or 2, characterized in that: the positioning member is integrated with the flap door cover. 7. The double control flap door according to claim 1 or 2, characterized in that: the jacking member is a jacking rod or a jacking block.