Quick connecting device with disengagement self-sealing function

Abstract

The utility model discloses a quick connecting device with a disengagement self-sealing function, which belongs to the technical field of petrochemical industry, and is characterized in that an overflowing orifice plate is arranged between an expanding cavity tube and a main ball valve, the expanding cavity tube is arranged on the main ball valve, a limiting rod is vertically arranged at the center position of the overflowing orifice plate, and a spring and a sliding valve core assembly are sleeved on the limiting rod; the sliding valve element assembly slides on the limiting rod, the sliding valve element assembly is limited through the expanding cavity pipe, the expanding cavity pipe is provided with a locking groove, the spanner type quick female connector abuts against the sliding valve element assembly and is locked on the expanding cavity pipe, and the expanding cavity pipe is further provided with a pressure relief emptying ball valve. And the self-sealing joint is mainly applied to the aspect of liquefied hydrocarbon loading and unloading operation, and the self-sealing joint is mainly used for loading and unloading of liquefied hydrocarbon.

Description

Technical Field

[0001] The utility model belongs to the technical field of petrochemical industry, and specifically relates to a quick connection device with a disconnection self-sealing function. Background Art

[0002] The main inland transportation methods for liquefied hydrocarbon materials are pipeline transportation and tanker filling transportation. During the transportation process, loading and unloading operations of the materials are involved. Currently, a swivel arm is generally used as the equipment, that is, the tanker is connected by the quick female connector at the docking end of the swivel arm, and the male connector on the tanker is locked by pulling the fastener on the connector. Subsequently, the pump valve is opened for filling.

[0003] Since the quick connector requires manual operation of the fastener to lock the tanker, negligence, mistakes in personnel operation, or wear and failure of the locked fastener may all cause the swivel arm to accidentally disconnect from the tanker during the loading and unloading process, resulting in a large amount of leakage. And the leaked liquefied hydrocarbon will cause an explosion accident when encountering an ignition source.

[0004] Currently, there are several dry-type connector products on the market. The docking and locking are achieved by the supporting use of two special male and female connectors. When the operation is separated, the two connectors can each achieve automatic closing, so as to achieve the disconnection self-sealing function. However, due to the special structure of such connectors, the male and female connectors must be used in a complete set, which is not practical for the loading and unloading of pressure tanks such as liquefied hydrocarbons.

[0005] On the one hand, there are tens of thousands of liquefied hydrocarbon tankers in China, and there are even more than one million liquefied hydrocarbon swivel arms. Whether it is the male connector on the liquefied hydrocarbon tanker or the female connector on the liquefied hydrocarbon swivel arm, they have been standardized and must be used in a supporting manner at both the male and female ends. On the other hand, liquefied hydrocarbon tankers do not belong to the same company or region, and they may flow to various provinces and regions every day for loading and unloading operations. This requires that the connection dimensions of the connectors on the tankers and swivel arms across the country must be the same, otherwise the tanker and the swivel arm cannot be connected, affecting the operation.

[0006] Therefore, if you want to use the above dry-type connector products, you have to replace all the male connectors on the liquefied hydrocarbon tankers and the female connectors on the swivel arms. This is very difficult to achieve both in terms of cost and feasibility.

[0007] In order to further improve the safety of liquefied hydrocarbon loading and unloading operations and avoid a large amount of leakage of tankers or swivel arms caused by the disconnection of the connectors, a feasible method is to re-design the existing male connectors on the tankers and female connectors on the swivel arms, increase the disconnection self-sealing function while keeping the structural dimensions of the connection part unchanged, and then gradually replace them. Because it is impossible to completely implement the upgrade and replacement of the connectors across the country in the short term, the upgraded connectors can retain the matching with the original connectors. Whether only the connectors at the vehicle end or the swivel arm end are replaced, or both ends are replaced, it will not affect the normal use.

[0008] In response to this, Chinese Patent (Application No. 202411219953.7) provides a pipe connection device with anti-disconnection function, which can be fully matched and connected with the existing male connector of liquefied hydrocarbon tank trucks, and can realize the locking, anti-disconnection and self-sealing functions of the device itself. This invention combines the functions of a valve and a traditional quick connector, uses the valve-opening action to compress the internal spring for energy storage, locks the valve-opening position through a holding mechanism, and when the connector is accidentally disconnected from the male connector of the tank truck, the holding mechanism will be triggered to release simultaneously, and then the valve will quickly close under the action of the spring force, which preferably solves the problem that the traditional female quick connector at the end of the loading arm cannot achieve self-sealing when disconnected. However, this invention only provides safety protection for the end of the loading arm. In a sense, it only saves some time for emergency treatment when leakage occurs due to accidental disconnection.

[0009] To solve this problem, we have invented a quick connection device with self-sealing function when disconnected. Utility Model Content

[0010] The purpose of the present utility model is to provide a quick connection device with self-sealing function when disconnected, so as to solve the problem that during the liquefied hydrocarbon loading and unloading operation, the lack of self-sealing function when disconnected leads to a large amount of raw materials leaking from the tank truck or the loading arm when the connector falls off.

[0011] To achieve the above purpose, the present utility model provides the following technical solution: A quick connection device with self-sealing function when disconnected, including a main ball valve, an expanded diameter cavity pipe, a flow orifice plate, a sliding valve core assembly and a lever-type quick female connector. It is characterized in that: a flow orifice plate is arranged between the expanded diameter cavity pipe and the main ball valve, the expanded diameter cavity pipe is installed on the main ball valve, a limiting rod is vertically installed at the center position of the flow orifice plate, a spring and a sliding valve core assembly are sleeved on the limiting rod, the sliding valve core assembly slides on the limiting rod, the sliding valve core assembly is limited by the expanded diameter cavity pipe, a locking groove is arranged on the expanded diameter cavity pipe, the lever-type quick female connector abuts against the sliding valve core assembly and the lever-type quick female connector is locked on the expanded diameter cavity pipe, and a pressure relief and drainage ball valve is also installed on the expanded diameter cavity pipe. The expanded diameter cavity pipe is communicated with the pressure relief and drainage ball valve for draining the medium and pressure in the expanded diameter cavity pipe.

[0012] Preferably, the sliding valve core assembly includes a self-sealing valve core and an inner sleeve push pipe, which are fixedly connected between the self-sealing valve core and the inner sleeve push pipe, a group of diversion ports are arranged on the inner sleeve push pipe, and a sliding groove is arranged inside the self-sealing valve core.

[0013] Preferably, the self-sealing valve core is double-sided conical, and a sealing ring is arranged on the side edge where the self-sealing valve core is connected to the inner sleeve push pipe. The combination of the expanded diameter cavity pipe and the self-sealing valve core structure ensures the flow-through diameter of the medium, reduces the flow resistance at the same time, and maintains the normal flow rate.

[0014] Preferably, the lever-type quick female connector includes a counterbore pipe and a locking lever, and the locking lever is rotatably arranged on the counterbore pipe through a rotating rod.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present invention is installed on a liquefied hydrocarbon pressure tank truck, communicates with the inside of the tank body, and is connected to a loading arm during use to realize the material transfer between the tank and the loading arm.

[0017] When an accidental disconnection occurs, the present invention can instantly close the channel, avoid a large amount of leakage of the medium in the tank truck, greatly improve the safety of liquefied hydrocarbon loading and unloading operations, and cooperate with the self-sealing valve core for self-sealing use, which can completely solve the leakage problem when the joint is accidentally disconnected. Description of the Drawings

[0018] Figure 1 It is an internal sectional view in the disconnection and sealing state of the present utility model;

[0019] Figure 2 It is an internal sectional view in the connection and flow state of the present utility model;

[0020] Figure 3 It is a three-dimensional view of the orifice plate and sliding valve core assembly of the present utility model;

[0021] Figure 4 It is a schematic diagram of the internal material cut-off in the disconnection and sealing state of the present utility model;

[0022] Figure 5 It is a schematic diagram of the internal material flow in the connection and flow state of the present utility model;

[0023] Figure 6 It is a diagram of the scene use of the present utility model. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] In one embodiment, refer to Figures 1 to 6, A quick connection device with a disengaging self-sealing function, comprising a main ball valve 1, a diameter-expanded cavity pipe 2, a flow-through orifice plate 3, a sliding spool assembly 4, and a lever-type quick female connector 5. It is characterized in that: a flow-through orifice plate 3 is arranged between the diameter-expanded cavity pipe 2 and the main ball valve 1, the diameter-expanded cavity pipe 2 is installed on the main ball valve 1, a limiting rod 6 is vertically installed at the center position of the flow-through orifice plate 3, a spring 7 and a sliding spool assembly 4 are sleeved on the limiting rod 6, the sliding spool assembly 4 slides on the limiting rod 6, the sliding spool assembly 4 is limited by the diameter-expanded cavity pipe 2, a locking groove 8 is provided on the diameter-expanded cavity pipe 2, the lever-type quick female connector 5 abuts against the sliding spool assembly 4 and the lever-type quick female connector 5 is locked on the diameter-expanded cavity pipe 2, and a pressure relief and evacuation ball valve 21 is also installed on the diameter-expanded cavity pipe 2.

[0026] In one embodiment, refer to Figure 3 The sliding spool assembly 4 includes a self-sealing spool 41 and an inner sleeve push pipe 42. The self-sealing spool 41 and the inner sleeve push pipe 42 are fixedly connected. A set of diversion ports 43 are provided on the inner sleeve push pipe 42. A chute 45 is arranged inside the self-sealing spool 41. The self-sealing spool 41 is double-sided conical, and a sealing ring 44 is arranged on the connecting side of the self-sealing spool 41 and the inner sleeve push pipe 42.

[0027] In one embodiment, refer to Figure 1 , The lever-type quick female connector 5 includes a counterbore pipe 51 and a locking lever 52. The locking lever 52 is rotatably arranged on the counterbore pipe 51 through a rotating rod 53.

[0028] In one embodiment, refer to Figure 1 and Figure 4 , Before docking, the main ball valve 1 on the present invention is in a closed state, and the self-sealing spool 41 is pressed on the sealing surface of the diameter-expanded cavity pipe 2 under the action of the spring 7 to close the channel.

[0029] In one embodiment, refer to Figure 2 and Figure 5 , During docking, align the end of the loading arm with the lever-type quick female connector 5 and push it towards the sliding spool assembly 4. The end face of the counterbore pipe 51 inside the female connector first touches and abuts against the inner sleeve push pipe 42 of the sliding spool assembly 4. Continuing to push, the inner sleeve push pipe 42 drives the self-sealing spool 41 to slide into the diameter-expanded cavity pipe 2.

[0030] In one embodiment, refer to Figure 2 and Figure 5 , After docking, the self-sealing spool 41 is pushed by the inner sleeve push pipe 42 away from the sealing surface of the diameter-expanded cavity pipe 2, and the overall channel is opened. Then, the main ball valve 1 is opened, and at this time, the entire channel is fully opened, and material loading and unloading can begin.

[0031] In one embodiment, refer to Figure 1 and Figure 4, when the quick female connector 5 of the swivel arm end is accidentally disengaged from the enlarged diameter cavity pipe 2, the self-sealing valve core 41 quickly moves towards the sealing surface of the enlarged diameter cavity pipe 2 under the action of the pressure in the tank and the spring 7, instantly closing the internal channel of the present invention, and the leakage stops immediately. Even if the ball valve of the present invention is still in the open state, the medium in the tank car will not continue to leak. Subsequently, only the emergency shutdown of the swivel arm end is required.

[0032] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A quick connection device with a disengaging self-sealing function, comprising a main ball valve (1), an enlarged-diameter cavity pipe (2), a flow-through orifice plate (3), a sliding spool assembly (4), and a lever-type quick female connector (5), characterized in that: An orifice plate (3) is arranged between the expanded-diameter cavity tube (2) and the main ball valve (1). The expanded-diameter cavity tube (2) is installed on the main ball valve (1). A limiting rod (6) is vertically installed at the center position of the orifice plate (3). A spring (7) and a sliding spool assembly (4) are sleeved on the limiting rod (6). The sliding spool assembly (4) slides on the limiting rod (6). The sliding spool assembly (4) is limited by the expanded-diameter cavity tube (2). A locking groove (8) is provided on the expanded-diameter cavity tube (2). The lever-type quick female connector (5) abuts against the sliding spool assembly (4) and the lever-type quick female connector (5) is locked on the expanded-diameter cavity tube (2).

2. The quick connection device with a disengaging self-sealing function according to claim 1, characterized in that: The sliding spool assembly (4) includes a self-sealing spool (41) and an inner sleeve push tube (42). The self-sealing spool (41) and the inner sleeve push tube (42) are fixedly connected. A set of diversion ports (43) are provided on the inner sleeve push tube (42). A chute (45) is arranged inside the self-sealing spool (41).

3. The quick connection device with a disengaging self-sealing function according to claim 2, characterized in that: The self-sealing spool (41) is double-sided conical.

4. The quick connection device with a disengaging self-sealing function according to claim 2, characterized in that: A sealing ring (44) is arranged on the connecting side edge of the self-sealing spool (41) and the inner sleeve push tube (42).

5. A quick connection device with a disengaging self-sealing function according to claim 1, characterized in that: The lever-type quick female connector (5) includes a counterbore tube (51) and a locking lever (52). The locking lever (52) is rotatably arranged on the counterbore tube (51) through a rotating rod (53).

6. A quick connection device with a disengaging self-sealing function according to claim 1, characterized in that: A pressure relief and evacuation ball valve (21) is also installed on the expanded-diameter cavity tube (2).

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