Door interlocking control device and system and offshore oil platform
By installing interlock control devices on both sides of the doors of the offshore oil platform and using the electrical connection between limit switches and door closers, the problem of drafts when the doors are not fully closed is solved, thus improving safety and facilitating entry and exit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-13
AI Technical Summary
On offshore oil platforms, when there are doors on both sides of a room, opening a door that is not fully closed can easily cause injuries due to drafts. Current technology is not able to effectively prevent such accidents.
An interlock control device for a door is adopted. Through the electrical connection of the first and second side limit switches with the door closer, it ensures that the opening of the other side door is prevented when one side door is not closed tightly. The electrical connection between the limit switches and the door closer controls the opening and closing of the door latch, forming a power circuit to achieve interlock control.
This effectively avoids accidents caused by drafts that could trap or collide with doors, improves the safety of offshore oil platform workers, and facilitates entry and exit operations.
Smart Images
Figure CN223991686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door control technology, and in particular to a door interlock control device, system and offshore oil platform. Background Technology
[0002] On offshore oil platforms, most control rooms and living quarters have doors on both sides for easy personnel access. Furthermore, due to seasonal winds, these rooms / control rooms with doors on both sides typically have one windward side and the other leeward side. Investigations have revealed the following main drawbacks of this design:
[0003] The rooms (including switch rooms) all have doors on both sides, such as the east and west sides. If the east side is the windward side, and the west side door is not fully closed, opening the east side door abruptly will cause a sudden increase in wind speed due to the "through wind," or flowing wind. Simultaneously, the suction force between the door and the door frame will increase dramatically, making it easy for employees to get their hands caught and injured when trying to open the door. The same applies to the other side; if the opposite door is not properly closed, people are easily injured by being caught or bumped when opening it. Utility Model Content
[0004] The technical problem to be solved by this utility model is to address the defect of a room with doors on both sides, which may cause injury to people when the door on the other side is opened due to drafts caused by one door not being closed tightly. This invention provides a door interlocking control device, system, and offshore oil platform.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a door interlock control device for controlling two doors arranged opposite each other, including a first side limit switch, a second side limit switch, a first side door closer and a second side door closer;
[0006] The first side limit switch is electrically connected to the second side door closer and is used to control the on / off state of the second side door closer;
[0007] The second side limit switch is electrically connected to the first side door closer and is used to control the opening and closing of the first side door closer;
[0008] The first side door closer is installed on the door frame of the first side door and is used to open or close the door latch of the first side door; the second side door closer is installed on the door frame of the second side door and is used to open or close the door latch of the second side door.
[0009] When the first side door is not fully closed, the first side limit switch is closed;
[0010] When the second side door is not fully closed, the second side limit switch closes.
[0011] Furthermore, in the door interlock control device described in this utility model, the first side limit switch and the second side limit switch are respectively installed at positions that can be pressed down by the door body and triggered when the corresponding side door is closed.
[0012] Furthermore, in the door interlock control device described in this utility model, when the first side door is not closed tightly, the action mechanism of the first side limit switch is not closed, the contacts of the first side limit switch are closed, the second side door closer is energized, and the door latch of the second side door is activated to prevent the door from opening.
[0013] When the first side door is closed tightly, the operating mechanism of the first side limit switch closes under the external force of closing the door, the contacts of the first side limit switch open, the second side door closer is de-energized, and the door latch of the second side door opens.
[0014] Furthermore, in the door interlock control device described in this utility model, when the second side door is not closed tightly, the action mechanism of the second side limit switch is not closed, the contacts of the second side limit switch are closed, the first side door closer is energized, and the door latch of the first side door is activated to prevent the door from opening.
[0015] When the second side door is closed, the operating mechanism of the second side limit switch closes under the external force of closing the door, the contacts of the second side limit switch open, the first side door closer is de-energized, and the door latch of the first side door opens.
[0016] Furthermore, the door interlock control device described in this utility model also includes a power module. The positive terminal of the power module is connected to one end of the first side limit switch and one end of the second side limit switch, and the negative terminal of the power module is connected to one end of the first side door closer and one end of the second side door closer to form a power circuit.
[0017] Furthermore, the door interlock control device described in this utility model also includes a first manual switch connected between the power module and the second side limit switch. The first manual switch is used to manually control the on / off state of the power circuit of the first side door closer.
[0018] Furthermore, the door interlock control device described in this utility model also includes a second manual switch connected between the power module and the first side limit switch. The second manual switch is used to manually control the on / off state of the power circuit of the second side door closer.
[0019] Furthermore, in the door interlock control device described in this utility model, the power supply module is a 24V DC power supply.
[0020] In addition, this utility model also provides a door interlock control system, including the door interlock control device as described above.
[0021] In addition, this utility model also provides an offshore oil platform, including the door interlock control device as described above.
[0022] The door interlocking control device, system, and offshore oil platform implementing this utility model have the following beneficial effects: This device can prevent the opening of the other door when one door is not closed tightly, thereby avoiding injury to personnel due to drafts, effectively improving the safety of offshore oil platform personnel, and facilitating easier entry and exit. Attached Figure Description
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0024] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model;
[0025] Figure 2 This is a structural schematic diagram provided by an embodiment of the present utility model;
[0026] Figure 3 This is a structural schematic diagram provided by an embodiment of the present utility model. Detailed Implementation
[0027] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.
[0028] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0029] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0030] refer to Figure 1 In a preferred embodiment, the door interlock control device of this embodiment is used to control two doors arranged opposite each other. For example, the switch room of an offshore oil platform usually has mirror-symmetrical doors on both sides, as do the two sides of a living area. The door interlock control device of this embodiment includes a first-side limit switch, a second-side limit switch, a first-side door closer, and a second-side door closer. The first-side limit switch is electrically connected to the second-side door closer and is used to control the opening and closing of the second-side door closer. The second-side limit switch is electrically connected to the first-side door closer and is used to control the opening and closing of the first-side door closer. The first-side door closer is disposed on the door frame of the first-side door and is used to open or close the door latch of the first-side door. The second-side door closer is disposed on the door frame of the second-side door and is used to open or close the door latch of the second-side door. When the first-side door is not fully closed, the first-side limit switch is closed. When the second-side door is not fully closed, the second-side limit switch is closed.
[0031] Alternatively, the first and second side limit switches are installed in positions where they can be pressed down by the door and triggered when the corresponding side door is closed. That is, the first side limit switch can be installed in a position where it can be pressed down by the door and triggered when the first side door is closed. The second side limit switch can be installed in a position where it can be pressed down by the door and triggered when the second side door is closed. For example, it could be at the top or bottom of the door frame.
[0032] The working principle of this embodiment is as follows: When the first side door is not fully closed, the operating mechanism of the first side limit switch is not closed, the contacts of the first side limit switch are closed, the second side door closer is energized, and the door latch of the second side door is activated, preventing the second side door from opening. When the first side door is fully closed, the operating mechanism of the first side limit switch closes under the external force of closing the door, the contacts of the first side limit switch open, the second side door closer is de-energized, and the door latch of the second side door opens. When the second side door is not fully closed, the operating mechanism of the second side limit switch is not closed, the contacts of the second side limit switch close, the first side door closer is energized, and the door latch of the first side door is activated, preventing the first side door from opening. When the second side door is fully closed, the operating mechanism of the second side limit switch closes under the external force of closing the door, the contacts of the second side limit switch open, the first side door closer is de-energized, and the door latch of the first side door opens.
[0033] In other words, when the first door closer is energized, the latch on the first door extends, preventing the first door from opening. The same applies to the second door. Whether the door closer is energized depends on whether the limit switch on the opposite door it is connected to is closed. For example, taking the east and west doors as an example, if the east door is not fully closed, the east door limit switch will automatically pop out. That is, the push rod (acting mechanism) of the east door limit switch is not closed (i.e., not pressed down), so the contacts of the east door limit switch are closed, and the west door closer connected to it is energized. If the east door is fully closed, the limit switch is open, and the west door closer connected to it is de-energized. In other words, the telescopic rod of this limit switch is in the extended state when there is no external force. Therefore, this limit switch can be used to determine whether the east door is fully closed. When the door is closed, the limit switch is pressed down by the door, and the contacts are open. When the door is not fully closed, the limit switch pops out (i.e., not pressed down), and the contacts inside the limit switch close. It should be noted that the internal structures of the limit switch, door closer, and manual switch in this embodiment can all refer to the prior art, and will not be described in detail here.
[0034] This embodiment can prevent the opening of one door from being opened if one door is not closed properly, thereby avoiding injuries caused by drafts and preventing hand injuries or collisions caused by drafts. It effectively improves the safety of offshore oil platform workers and facilitates easier access.
[0035] In some embodiments, such as Figure 2As shown, the door interlock control device in this embodiment further includes a power supply module. The positive terminal of the power supply module is connected to one end of the first-side limit switch and one end of the second-side limit switch, and the negative terminal of the power supply module is connected to one end of the first-side door closer and one end of the second-side door closer, thus forming a power circuit. It can be understood that the limit switches can be connected between the power supply and the power circuit formed by the power supply and the door closer, thereby achieving on / off control of the door closer by cutting off or connecting the power circuit of the door closer. Preferably, the power supply module is a 24V DC power supply.
[0036] In some embodiments, such as Figure 3 As shown, the door interlock control device in this embodiment further includes a first manual switch connected between the power module and the second side limit switch. The first manual switch is used to manually control the on / off state of the power circuit of the first side door closer. The door interlock control device in this embodiment also includes a second manual switch connected between the power module and the first side limit switch. The second manual switch is used to manually control the on / off state of the power circuit of the second side door closer. In this embodiment, the power circuit of the door closer can be cut off by the manual switch, preventing the door closer from working, thereby opening the corresponding side door. The manual switch provided in this embodiment allows for free selection of both side doors for escape in emergency situations (such as extreme situations like fire). This embodiment can also serve as an alternative solution when the limit switch fails. The manual switch can be controlled by a designated person.
[0037] This article primarily uses examples with doors on the east and west sides, respectively. A practical survey was conducted on a room with doors on both sides of the control room on a certain platform during windy winter weather.
[0038] 1. With the west door closed due to strong winds on the east side of the platform, it is easy for one person to open the east door. Furthermore, an anemometer measured the wind speed at the gap between the east door and the door frame to be 0.5 m / s.
[0039] 2. At this point, open the west door slightly and then try to open the east door; it's difficult for one person to push it open. Ensuring safety, two people should work together to carefully push open the east door, blocking it with an obstacle and leaving a small gap. At this point, the west door, affected by the crosswind, can be pushed open directly. The wind speed measured at the gap between the east door and the door frame is 8.0 m / s.
[0040] 3. With the east door closed due to strong winds on the east side of the platform, it is easy for one person to open the west door. Furthermore, an anemometer measured the wind speed at the gap between the west door and the door frame to be 0.4 m / s.
[0041] 4. If it is windy on the east side of the platform and the east side door is not closed, opening the west side door rashly could easily cause injury. Furthermore, an anemometer measured the wind speed at the gap between the west side door and the door frame to be 7.8 m / s.
[0042] The data from the on-site survey shows that when a room has doors on both sides, the wind speed through the gap in the doorway at the moment one door is opened is directly affected by whether the opposite door is open or closed, as the opposite door is the key cause of cross drafts. As the wind speed increases, the resistance the door experiences also increases dramatically. Opening a door under these conditions can easily result in people being pinched or bumped. Therefore, avoiding the effects of cross drafts is the key to solving the problem.
[0043] This utility model's door interlock control device can, when the east door is not fully closed, close the upper limit switch of the east door, energize the west door closer, and prevent the west door from opening, thus avoiding drafts. Similarly, when the west door is not fully closed, the upper limit switch of the west door closes, energize the east door closer, and prevent the east door from opening, also avoiding drafts. If forced entry through either the east or west door is required, simply switch the manual switch to the OFF position. Under normal circumstances, the manual switches should be managed by designated personnel or locked.
[0044] In another preferred embodiment, the door interlocking control system of this embodiment includes the door interlocking control device as described in the above embodiment. This embodiment can prevent the opening of the other door if one door is not fully closed, thereby avoiding injury to personnel due to drafts and preventing hand injuries / collisions caused by drafts. This effectively improves the safety of personnel on offshore oil platforms.
[0045] In another preferred embodiment, the offshore oil platform of this embodiment includes a door interlocking control device as described in the above embodiment. This embodiment can prevent the opening of the other door if one door is not fully closed, thereby preventing personnel from being injured by drafts and avoiding hand injuries or collisions caused by drafts. This effectively improves the safety of offshore oil platform personnel.
[0046] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.
[0047] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. An interlock control device for a door for controlling a double door disposed in opposition, characterized by, The first side limit switch and the second side limit switch are respectively installed at positions which can be pressed by the door body and trigger the switch when the corresponding side door is closed. The first side limit switch and the second side limit switch are respectively installed at positions which can be pressed by the door body and trigger the switch when the corresponding side door is closed.
3. The door interlock control device according to claim 1 or 2, wherein The first side limit switch and the second side limit switch are respectively installed at positions which can be pressed by the door body and trigger the switch when the corresponding side door is closed.
4. The door interlock control device according to claim 1 or 2, wherein The first side limit switch and the second side limit switch are respectively installed at positions which can be pressed by the door body and trigger the switch when the corresponding side door is closed.
2. An interlock control for a door as claimed in claim 1, characterised in that, The power module is a 24V direct current power supply. The door interlock control device according to any one of claims 1 to 8. The door interlock control device according to any one of claims 1 to 8. 5. The interlock control for a door of claim 1, wherein, 6. An interlock control for a door as claimed in claim 5, characterised in that, 7. The interlock control for a door of claim 5 wherein, 8. The interlock control for a door of claim 5 wherein, 9. An interlock control system for a door, characterized by 10. An offshore oil platform, characterized in that