General integrated device with quick exhaust function for stop valve

Abstract

The utility model discloses a general integrated device with quick exhaust for a stop valve, which comprises a connecting block, an integrated block and a breather pipe connected between the connecting block and the integrated block, the connecting block is hermetically matched with the breather pipe, and the integrated block can move along the breather pipe to form a telescopic structure; the integrated block is provided with two sets of compressed air connectors used for receiving compressed air, the valve element located in the connecting block and the valve element located in the integrated block are driven by the compressed air to move, and air is supplied to the two sets of compressed air connectors alternately through the electromagnetic reversing valve. The connecting block and the integrated block are respectively provided with an actuator air connecting port used for transmitting compressed air to an actuator. The device is reliable in structure and good in use performance, the device is designed in an integrated mode, the whole structure is telescopic so that the device can adapt to stop valve pneumatic heads of different models, the purposes of hard pipe connection reduction, rapid installation and rapid response are achieved, and the piping process of the stop valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a universal integrated device with quick exhaust for stop valves. Background Art

[0002] In the PSA hydrogen production device, the stop valve plays a vital role, and its performance directly affects the efficiency, safety and purity of the hydrogen product of the device. The pneumatic stop valve is a key component in the PSA system for cutting off or opening the fluid path. It is usually driven by an air-controlled valve or a solenoid valve. According to the system instructions, the air pressure acts on the piston or diaphragm to move the valve core, thereby realizing the opening and closing of the fluid channel. The connection between the solenoid valve and the air-controlled valve and the quick exhaust valve on the conventional pneumatic stop valve is basically hard-connected with stainless steel pipes. Due to the high-speed flow of the air flow or the vibration of the system, the piping may vibrate, resulting in loose connections or damage to the piping. If gas leakage occurs at the piping connection or joint, this will cause the system pressure to drop, affecting the normal opening and closing of the stop valve. The following problems will occur in the system:

[0003] 1. System pressure drop: Pneumatic stop valves rely on compressed air or gas to drive. If the air source pipeline leaks, the driving gas pressure will drop, which may prevent the stop valve from fully closing or opening, affecting the efficiency and stability of the PSA system.

[0004] 2. Abnormal adsorption / desorption cycles: The PSA system controls the opening and closing of shutoff valves to achieve alternating adsorption and desorption processes. Leaks in the gas source pipeline may prolong the shutoff valve's response time, affecting the precise control of the adsorption and desorption cycles and reducing hydrogen purity and production.

[0005] 3. Equipment damage: Continuous gas leakage may cause excessive wear of the internal components of the pneumatic stop valve, accelerate the aging of the equipment, and increase the frequency of maintenance and replacement.

[0006] 4. Increased maintenance costs: Frequent leak detection and repair work will increase maintenance costs and affect the normal operation and maintenance plan of the PSA system.

[0007] 5. Production interruption: Severe leaks may force the PSA system to shut down for maintenance, resulting in production interruption, affecting the continuous supply of hydrogen, and adversely affecting industrial processes that rely on hydrogen. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides a universal integrated device with quick exhaust for a stop valve.

[0009] The utility model solves the above-mentioned technical problems with the following technical solutions: a universal integrated device with quick exhaust for a stop valve, comprising a connecting block, an integrated block, and a vent pipe connected between the connecting block and the integrated block, wherein the connecting block and the vent pipe are sealed and matched, and the integrated block can move along the vent pipe to form a retractable structure;

[0010] The integrated block is provided with two sets of compressed air interfaces for receiving compressed air. The valve core in the connecting block and the valve core in the integrated block are driven to move by compressed air, and the two sets of compressed air interfaces are alternately supplied with air through the electromagnetic reversing valve. The connecting block and the integrated block are respectively provided with actuator air ports for transmitting compressed air to the actuator.

[0011] Furthermore, joints are respectively provided at the ends of the connection block and the integrated block in a sealed manner.

[0012] Furthermore, the joint is connected to the connection block or the integrated block by screws and is sealed by a sealing ring.

[0013] Furthermore, the connecting block and the integrated block are respectively connected to the cylinder cover of the actuator by screws.

[0014] Furthermore, the vent pipe is connected to the interior of the connecting block through an O-ring.

[0015] The utility model has the following beneficial effects: the invention provides a universal integrated device with quick exhaust for shut-off valves, which has a reliable structure and good performance. The device is designed to be integrated and flexible to adapt to different types of shut-off valve pneumatic heads, thereby reducing the number of hard pipe connections, quick installation, and quick response, and reducing the shut-off valve piping process. In addition, by controlling the reversing of the solenoid valve, the two sets of compressed air interfaces are alternately fed with air. According to the switching of the air inlet, the actuator receives compressed air and performs reciprocating or rotational motion. After the actuator action is completed or when reversing is required, the gas in the actuator is quickly discharged through the quick exhaust valve to achieve a quick response and reduce the response time, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figures 1 to 2 The reference numerals shown in the figure represent: 1-connecting block, 2-integrated block, 3-ventilation pipe, 4-compressed air interface, 5-valve core, 6-actuator air port, 7-connector. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figures 1 to 2 As shown, a universal integrated device for shut-off valves with quick exhaust comprises a connecting block 1, an integrated block 2, and a vent pipe 3 connected between the connecting block 1 and the integrated block 2. The connecting block 1 is sealed with the vent pipe 3, and the integrated block 2 can move along the vent pipe 3 to form a retractable structure to accommodate different types of shut-off valve pneumatic heads. The connecting block 1, as the foundation of the entire device, is sealed with the vent pipe 3 to ensure stable gas transmission. A valve core 5 is provided in the connecting block 1 to control the on-off and flow regulation of the gas. Two sets of compressed air interfaces 4 are provided on the integrated block 2 to receive compressed air from the electromagnetic reversing valve. A valve core 5 is also provided in the integrated block 2 to work in conjunction with the valve core 5 in the connecting block 1 to achieve precise gas control. The integrated block 2 can move along the vent pipe 3 to form a retractable structure to accommodate different types of shut-off valve pneumatic heads. The vent pipe 3 connects the connecting block 1 and the integrated block 2 to ensure smooth gas transmission between the two. The electromagnetic reversing valve is used to alternately supply air to the two sets of compressed air interfaces 4, thereby controlling the movement of the valve core 5 in the integrated block 2. By changing the power supply state of the electromagnetic reversing valve, precise control of the flow direction and flow of the gas can be achieved.

[0021] Manifold block 2 is equipped with two sets of compressed air ports 4 for receiving compressed air. Compressed air drives the movement of valve cores 5 in connecting block 1 and manifold block 2, and air is alternately supplied to these two sets of compressed air ports 4 via solenoid reversing valves. Connecting block 1 and manifold block 2 are each equipped with actuator air ports 6 for transferring compressed air to the actuator. By controlling the reversing direction of the solenoid valves, air is alternately supplied to these two sets of compressed air ports 4. Depending on the switching of the air ports, the actuator receives compressed air and performs reciprocating or rotational motion. After the actuator completes its movement or when reversing direction is required, the air in the actuator is quickly exhausted via a quick exhaust valve, achieving a fast response time and improving work efficiency.

[0022] Specifically, if Figure 2 As shown, two sets of compressed air ports 4, labeled P1 and P2, receive compressed air from the pneumatic system. The actuator air port 6 on connection block 1, labeled A1, and on manifold block 2, labeled A2, deliver compressed air to the actuator. Sealed connectors 7 are provided at the ends of connection block 1 and manifold block 2, respectively. Connector 7 on connection block 1 is labeled T1, while that on manifold block 2 is labeled T2. Connectors 7 are used to connect to a muffler.

[0023] When the device is in use, the specific working process is as follows:

[0024] Initial state: When there is no compressed air input, the valve core 5 is in the neutral position and the interfaces are not connected.

[0025] Intake process:

[0026] When air enters P1, the compressed air pushes valve core 5 to the right, connecting P1 to A1. At this point, the actuator receives compressed air through A1 and begins to operate. Meanwhile, T1 and A1 remain disconnected to prevent gas leakage.

[0027] Exhaust process:

[0028] When the solenoid valve is reversed, P1 stops taking in air. At this time, the compressed air in the actuator pushes the valve core 5 to the left, blocking P1.

[0029] At the same time, A1 is connected to T1, and the gas in the actuator is quickly discharged through A1 and T1, and the noise is reduced through the muffler.

[0030] P2 intake and exhaust:

[0031] When P2 is inlet, the working principle is the same as P1, but in the opposite direction. At this time, P2 is connected to A2, and the actuator receives compressed air through A2.

[0032] When P2 stops intake, A2 is connected to T2, and the gas in the actuator is quickly discharged through A2 and T2.

[0033] The connector 7 is connected to the connecting block 1 or the integrated block 2 by screws and is sealed by a sealing ring. The connecting block 1 and the integrated block 2 are respectively connected to the cylinder cover of the actuator by screws. The vent pipe 3 is connected to the inside of the connecting block 1 by an O-ring. The connector 7 and the connecting block 1 are limited and fixed by a hexagonal conical end set screw. The design of this screw allows it to be tightened using a tool through its hexagonal head, and the conical end provides an additional locking effect. O-rings are installed at interfaces that need to be sealed, such as between the valve core 5 and the connecting block 1, between the connector 7 and the connecting block 1, etc. They provide a sealing effect through compression.

[0034] Hexagon socket head cap screws are used to secure the assembled O-ring and connection block 1 to the actuator cylinder head. The cylindrical head of the screw provides sufficient surface area to prevent damage to the screw head during tightening. Spring washers are commonly used with hexagon socket head cap screws to increase the preload force of the screw connection and prevent loosening.

[0035] During assembly, first install the O-rings at the interfaces requiring sealing, such as between the valve core 5 and the connection block 1, and between the connector 7 and the connection block 1. Next, install the valve core 5 into the connection block 1 and the manifold block 2, and secure the connector 7 to the connection block 1 using the hexagon socket cone-point set screws. Finally, secure the assembled connection block 1 to the actuator cylinder head using the hexagon socket head screws and spring washers, ensuring that all screws are tightened to the specified torque. When the system is operating, the valve core 5 reciprocates within the connection block 1 and the manifold block 2, controlling the flow of fluid. The O-rings provide the necessary sealing to prevent leakage. Furthermore, the spring washers and hexagon socket head screws ensure the stability and reliability of the connection block 1.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal integrated device for stop valves with quick exhaust, characterized in that: The invention comprises a connecting block (1), an integrated block (2), and a vent pipe (3) connected between the connecting block (1) and the integrated block (2), wherein the connecting block (1) and the vent pipe (3) are in sealing cooperation, and the integrated block (2) can move along the vent pipe (3) to form a telescopic structure; The integrated block (2) is provided with two sets of compressed air interfaces (4) for receiving compressed air. The valve core (5) located in the connection block (1) and the valve core (5) in the integrated block (2) are driven to move by compressed air, and air is alternately supplied to the two sets of compressed air interfaces (4) through an electromagnetic reversing valve. The connection block (1) and the integrated block (2) are respectively provided with actuator air ports (6) for transmitting compressed air to the actuator.

2. The integrated device of universal stop valve with quick exhaust according to claim 1, characterized in that: The ends of the connection block (1) and the integrated block (2) are respectively sealed with joints (7).

3. The integrated device of universal stop valve with quick exhaust according to claim 2, characterized in that: The joint (7) is connected to the connection block (1) or the integrated block (2) via screws and is sealed via a sealing ring.

4. The integrated device of universal stop valve with quick exhaust according to claim 1, characterized in that: The connecting block (1) and the integrated block (2) are respectively connected to the cylinder cover of the actuator via screws.

5. The integrated device of universal stop valve with quick exhaust according to claim 4, characterized in that: The vent pipe (3) is connected to the interior of the connection block (1) via an O-type sealing ring.

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