Electric control bay ventilation butterfly valve for underwater closed cabin

Abstract

The invention relates to an electric control bay ventilation butterfly valve for an underwater closed cabin, which adopts a bay butterfly valve with low flow resistance and high temperature resistance, is mounted in a ventilation system of the underwater closed cabin, and is normally opened for ventilation at ordinary times; and the rear partition bulkhead is closed under an emergency condition. The electric control bay ventilation butterfly valve can tolerate the seawater pressure of 2MPa without leakage, can tolerate the high temperature of 250 DEG C, and avoids butterfly valve leakage in a fire state. The butterfly valve is in a normally open state at ordinary times and is used for ventilation of a closed cabin. Once an emergency situation occurs, such as a broken cabin, the cabin can be quickly closed, so that seawater on one side of the broken cabin is prevented from entering other cabins through the ventilation pipeline, and the safety of the cabins is ensured. And a bulkhead butterfly valve is arranged on each of the left and right sides of each cabin. Opening and closing of the butterfly valve can be operated in various modes such as on-site electric operation, remote control, manual hydraulic operation and emergency manual operation.

Description

Technical Field

[0001] The invention relates to a ventilation butterfly valve, in particular to an electrically controlled compartment ventilation butterfly valve used in an underwater closed cabin. Background Art

[0002] As an important accessory of the ship's cabin ventilation system, the pneumatic ventilation butterfly valve plays a very critical role in the ship's ventilation system. Generally, a single-acting actuator uses a solenoid valve; a double-acting actuator is controlled by two three-way solenoid valves or a four-way solenoid valve, and the air source control pressure is mostly below 0.8MPa. The solenoid valve is generally placed in the control box and connected to the pneumatic actuator of the butterfly valve through a pipeline system. This structural form makes the control system cumbersome and bulky, inconvenient to maintain, the installation location is limited, and the air source pipeline and power supply layout are complicated. At the same time, the existing products cannot meet the requirements of high medium pressure and special marine environmental conditions such as humidity, heat, high temperature, salt spray, and mold, and cannot adapt to the use needs of the system. Summary of the invention

[0003] The present invention is to provide an electrically controlled compartment ventilation butterfly valve for underwater closed cabins, which is normally open and used for ventilation of closed cabins. Once an emergency occurs, such as a damaged cabin, it can be quickly closed to prevent seawater on the damaged side from entering other cabins through the ventilation pipeline to ensure the safety of the cabin. A compartment butterfly valve is arranged on the left and right sides of each cabin. The butterfly valve can be opened and closed by various methods such as local electric operation, remote control, manual hydraulic operation and emergency manual operation.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: an electrically controlled compartment ventilation butterfly valve for an underwater closed cabin, which adopts a low flow resistance and high temperature resistant compartment butterfly valve, is installed in the ventilation system of the underwater closed cabin, is normally opened for ventilation and air exchange, and is closed to separate the bulkhead in an emergency.

[0005] Furthermore, the electrically controlled compartment ventilation butterfly valve can withstand 2MPa seawater pressure without leakage, and can withstand high temperatures of 250°C to avoid butterfly valve leakage in the event of a fire.

[0006] Furthermore, the electrically controlled compartment ventilation butterfly valve is equipped with a micro hydraulic system and can work by power supply without the need for an external hydraulic source. Under normal working conditions, the electrically controlled compartment ventilation butterfly valve is opened and closed by a switch button on a local control box or by receiving remote commands.

[0007] Furthermore, when the electric control function is lost due to a special power failure, the electrically controlled compartment ventilation butterfly valve is operated by a local or compartment emergency hand-operated device. During the compartment emergency operation, the valve switch status is observed through the valve position indicator on the emergency hand-operated device.

[0008] Furthermore, the electrically controlled compartment ventilation butterfly valve includes a valve body, a bottom cover, a lower bushing, a lower valve stem, a self-lubricating bearing, a connecting flange, a sealing ring, a butterfly plate, an upper valve stem, an upper bushing, and a pressure cover. The butterfly plate is connected to the valve body through the upper valve stem and the lower valve stem. The upper valve stem and the valve body are connected through a rotating universal seal ring, an upper bushing, and a pressure cover. The lower valve stem and the valve body are connected through the bottom cover, the lower bushing, the self-lubricating bearing, and the rotating universal seal ring A. The connecting flange is fixedly connected to the end face of the valve body by fasteners, and a sealing ring and an O-ring are provided at the connection between the connecting flange and the valve body.

[0009] Furthermore, the electrically controlled compartment ventilation butterfly valve is connected to a manual hydraulic device, and the bypass valve on the manual hydraulic device is opened by manual operation, driving the square tenon of the upper valve stem of the electrically controlled compartment ventilation butterfly valve to rotate to open and close the electrically controlled compartment ventilation butterfly valve.

[0010] Furthermore, the hand-operated hydraulic device is also connected to the electrically-controlled compartment ventilation butterfly valve on the other side of the cabin, and is used to open and close the manually hydraulically-operated electrically-controlled compartment ventilation butterfly valve on the other side of the cabin.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) It is normally open and used for ventilation of closed cabins. Once an emergency occurs, such as a damaged cabin, it can be quickly closed to prevent seawater from entering other cabins through the ventilation pipes, thereby ensuring the safety of the cabins.

[0013] (2) The butterfly valve can be opened and closed by various means such as local electric operation, remote control, manual hydraulic operation and emergency manual operation.

[0014] (3) In an emergency, it can isolate the bulkhead after closing, withstand 2MPa seawater pressure without leakage, and can withstand high temperature of 250℃ to avoid butterfly valve leakage in a fire situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the electrically controlled compartment ventilation butterfly valve for underwater closed cabins of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the electrically controlled compartment ventilation butterfly valve;

[0017] Figure 3 This is a schematic diagram of the hand-operated hydraulic device of the electrically controlled compartment ventilation butterfly valve;

[0018] Figure 4 The control schematic diagram of the electric compartment ventilation butterfly valve application;

[0019] In the figure: valve body 1, bottom cover 2, lower bushing 3, rotary universal seal ring A4, lower valve stem 5, self-lubricating bearing 6, connecting flange 7, seal ring 8, butterfly plate 9, upper valve stem 10, O-ring 11, rotary universal seal ring B12, upper bushing 13, pressure cover 14. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, an electrically controlled compartment ventilation butterfly valve for an underwater closed cabin of the present invention adopts a low flow resistance and high temperature resistant compartment butterfly valve, which is installed in the ventilation system of the underwater closed cabin. It is normally open for ventilation and air exchange; it is closed to separate the bulkhead in an emergency.

[0023] Preferably, the electrically controlled compartment ventilation butterfly valve can withstand a seawater pressure of 2 MPa without leakage, and can withstand a high temperature of 250° C. to avoid leakage of the butterfly valve in a fire state.

[0024] Preferably, if Figure 2 As shown, the electrically controlled compartment ventilation butterfly valve comprises a valve body 1, a bottom cover 2, a lower bushing 3, a rotary vane seal ring A4, a lower valve stem 5, a self-lubricating bearing 6, a connecting flange 7, a sealing ring 8, a butterfly plate 9, an upper valve stem 10, an O-ring 11, a rotary vane seal ring B12, an upper bushing 13, and a gland 14. The butterfly plate 9 is connected in the valve body 1 through the upper valve stem 10 and the lower valve stem 5, the upper valve stem 10 is connected to the valve body 1 through the rotary vane seal ring B12, the upper bushing 13, and the gland 14, the lower valve stem 5 is connected to the valve body 1 through the bottom cover 2, the lower bushing 3, the self-lubricating bearing 6, and the rotary vane seal ring A4, the connecting flange 7 is fixedly connected to the end face of the valve body 1 through fasteners, and a sealing ring 8 and an O-ring 11 are provided at the connection between the connecting flange 7 and the valve body 1.

[0025] Preferably, the electrically controlled compartment ventilation butterfly valve is equipped with a micro hydraulic system, which does not require an external hydraulic source and can work as long as it is powered. Under normal working conditions, the electrically controlled compartment ventilation butterfly valve is opened and closed by the switch button on the local control box or by receiving remote commands; when the electric control function is lost due to special circumstances such as power failure, the electrically controlled compartment ventilation butterfly valve can be operated by the local or compartment emergency manual operating device. During the compartment emergency operation, the valve position indicator on the emergency manual operating device can be used to observe the valve switch status; the electrically controlled compartment ventilation butterfly valve can also be manually operated to open the bypass valve on the electro-hydraulic actuator, and the valve stem is turned through the square tenon at the top to open and close the butterfly valve.

[0026] Preferably, the electrically controlled compartment ventilation butterfly valve can be opened and closed by connecting a hand-operated hydraulic device to a manually hydraulically operated compartment butterfly valve on the other side of the cabin. Figure 4 .

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. An electrically controlled compartment ventilation butterfly valve for underwater closed cabins, characterized in that: A low-resistance, high-temperature resistant bulkhead butterfly valve is installed in the ventilation system of the underwater closed cabin. It is normally open for ventilation and can be closed to isolate the bulkhead in an emergency.

2. The electrically controlled compartment ventilation butterfly valve for underwater closed cabins according to claim 1 is characterized in that: The electrically controlled compartment ventilation butterfly valve can withstand 2MPa seawater pressure without leakage, and can withstand high temperature of 250°C to avoid butterfly valve leakage in the event of fire.

3. The electrically controlled compartment ventilation butterfly valve for underwater closed cabins according to claim 1, characterized in that: The electrically controlled compartment ventilation butterfly valve is equipped with a micro hydraulic system and can work just by power supply without the need for an external hydraulic source. Under normal working conditions, the electrically controlled compartment ventilation butterfly valve is opened and closed by a switch button on a local control box or by receiving remote commands.

4. The electrically controlled compartment ventilation butterfly valve for underwater closed cabins according to claim 1, characterized in that: When the electric control function is lost due to special circumstances of power failure, the electrically controlled compartment ventilation butterfly valve is operated by the local or compartment emergency manual operating device. During the compartment emergency operation, the valve switch status is observed through the valve position indicator on the emergency manual operating device.

5. The electrically controlled compartment ventilation butterfly valve for underwater closed cabins according to claim 1, characterized in that: The electrically controlled compartment ventilation butterfly valve comprises a valve body, a bottom cover, a lower bushing, a lower valve stem, a self-lubricating bearing, a connecting flange, a sealing ring, a butterfly plate, an upper valve stem, an upper bushing and a gland. The butterfly plate is connected to the valve body via an upper valve stem and a lower valve stem. The upper valve stem is connected to the valve body via a rotating universal seal ring, an upper bushing and a gland. The lower valve stem is connected to the valve body via a bottom cover, a lower bushing, a self-lubricating bearing and a rotating universal seal ring A. The connecting flange is fixedly connected to the end face of the valve body via fasteners, and a sealing ring and an O-ring are provided at the connection between the connecting flange and the valve body.

6. The electrically controlled compartment ventilation butterfly valve for underwater closed compartments according to claim 5, characterized in that: The electrically controlled compartment ventilation butterfly valve is connected to a hand-operated hydraulic device, and the bypass valve on the hand-operated hydraulic device is opened by manual operation, driving the square tenon of the upper valve stem of the electrically controlled compartment ventilation butterfly valve to rotate to open and close the electrically controlled compartment ventilation butterfly valve.

7. The electrically controlled compartment ventilation butterfly valve for underwater closed cabins according to claim 6, characterized in that: The hand-operated hydraulic device is also connected to the electrically-controlled compartment ventilation butterfly valve on the other side of the cabin, and is used to open and close the manually hydraulically-operated electrically-controlled compartment ventilation butterfly valve on the other side of the cabin.

Images