Valve seat special for safety valve

Abstract

The utility model provides a valve seat special for a safety valve. The valve seat comprises a mounting part and a connecting part used for being connected with equipment to be mounted. The mounting part is provided with a mounting hole for the safety valve to enter, the connecting part is provided with a butt joint port butted with to-be-mounted equipment, and a channel for communicating the mounting hole with the butt joint port is arranged between the mounting hole and the butt joint port; a valve plate capable of being opened towards the butt-joint opening is arranged at the joint of the channel and the mounting hole, an elastic element connected with the valve plate to stop the valve plate from being opened is arranged on the side, close to the butt-joint opening, of the valve plate, and the valve plate is in a closed state under resistance of the elastic element. According to the utility model, the safety valve can be mounted under pressure, and the dismounting and mounting work of equipment and pipelines in the operation process is greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valve installation, in particular to a special valve seat for a safety valve. Background Art

[0002] To prevent accidents caused by unintended valve closures, which could lead to the safety valve failing to function, safety valve installation requirements require that no valve be installed between the safety valve and the pipeline or related equipment. This lack of a valve prevents the safety valve from being disassembled and assembled under pressure. However, in daily use, the safety valve must be disassembled and calibrated annually. This requires either shutting down production or switching to a bypass, a complex and cumbersome operation. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a special valve seat for a safety valve.

[0004] The utility model proposes a special valve seat for a safety valve, comprising: a mounting portion and a connecting portion for connecting to a device to be installed; the mounting portion has a mounting hole for entry of the safety valve, the connecting portion has a docking port for docking with the device to be installed, and a channel is provided between the mounting hole and the docking port to connect the two; a valve plate that can be opened toward the docking port is provided at the junction of the channel and the mounting hole, and an elastic element connected to the valve plate to prevent the valve plate from opening is provided on the side of the valve plate close to the docking port, and the valve plate is in a closed state under the resistance of the elastic element.

[0005] Preferably, the valve plate includes multiple valve flaps, and each valve flap is arranged circumferentially in the channel; a connecting seat is provided in the channel and on the side of any valve flap close to the docking port, and each valve flap is assembled on the corresponding connecting seat by rotating the shaft; there are multiple elastic elements, which are arranged one by one on the side of each valve flap close to the docking port and connected to the valve flap to form support for the valve flap, and each valve flap is closed under the action of the corresponding elastic element to block the channel, so that the valve plate enters a closed state.

[0006] Preferably, the elastic element is a torsion spring, and is mounted on the shaft in a one-to-one correspondence to provide storage force for the rotation of the valve disc.

[0007] Preferably, a limiting ring is provided at the junction of the channel and the mounting hole.

[0008] Preferably, the valve plate is located on the side of the limiting ring close to the docking port, one end of the elastic element is fixed in the channel, and the other end is connected to the valve plate. The valve plate is supported by the elastic element and, with the support of the elastic element, fits with the limiting ring and forms a seal on the fitting surface, and there is a distance between the outer peripheral surface of the valve plate and the inner wall of the channel.

[0009] Preferably, a support ring is provided inside the channel and on the side of the limiting ring close to the docking port, with a spacing from the limiting ring. One end of the elastic element is fixed to the support ring, and the other end is fixed to the valve plate.

[0010] Preferably, the valve plate is movably installed on the side of the limiting ring close to the docking port through a connecting shaft, and can flip towards the docking port with the connecting shaft as the rotation center. And the valve plate abuts against the limiting ring under the resistance of the elastic element and forms a seal on the abutting surface.

[0011] Preferably, internal threads are provided inside the mounting hole.

[0012] Preferably, the connecting portion is a threaded column with external threads.

[0013] In the present utility model, the connecting portion is used to connect it with the equipment where the safety valve needs to be installed, and the mounting hole is used to screw in the safety valve, so as to realize the assembly of the safety valve to the equipment through the transfer of this valve seat. At the same time, by arranging a valve plate that can be opened towards the docking port inside the channel of the valve seat, arranging an elastic element on the side of the valve plate close to the docking port to block the opening of the valve plate, and making the valve plate in a closed state under the resistance of the elastic element. When the safety valve is screwed into the channel, the screwed-in safety valve is used to push the valve plate into the open state, so that gas can normally flow into the chamber of the safety valve, realizing the protection function of the safety valve. And when the safety valve is unscrewed, the valve plate automatically resets under the action of the elastic element and automatically closes the channel. The structural design of this valve seat can automatically open the docking port when the safety valve is installed, and automatically close the docking port when the safety valve is removed, thus realizing the installation of the safety valve under pressure. Greatly simplifies the disassembly and installation work during the operation of equipment and pipelines. Description of the Drawings

[0014] Figure 1 is a schematic structural view of a special valve seat for a safety valve proposed by the present utility model Figure 1 ;

[0015] Figure 2 is an assembly schematic view of the valve flap in a special valve seat for a safety valve proposed by the present utility model;

[0016] Figure 3 is a schematic structural view of a special valve seat for a safety valve proposed by the present utility model Figure 2 ;

[0017] Figure 4 is Figure 3 a schematic view of the open state of the valve plate in

[0018] Figure 5 is a schematic structural view of a special valve seat for a safety valve proposed by the present utility model Figure 3 ;

[0019] Figure 6 For Figure 5 the schematic diagram of the open state of the valve plate in Specific embodiments

[0020] Referring to Figures 1 - 6 , a special valve seat for a safety valve proposed by the present utility model includes: an installation part 1 for installing the safety valve and a connection part 2 for connecting with the equipment to be installed, wherein:

[0021] The installation part 1 has an installation hole 3 for the safety valve to enter. The connection part 2 has a docking port for docking with the equipment to be installed, and a channel 4 communicating the two is provided between the installation hole 3 and the docking port. A valve plate 5 that can open towards the docking port is provided at the connection between the channel 4 and the installation hole 3. An elastic element 6 connected to the valve plate 5 to block the opening of the valve plate 5 is provided on one side of the valve plate 5 close to the docking port, and the valve plate 5 is in a closed state under the resistance of the elastic element 6.

[0022] During use, first use the connection part 2 to complete the connection between the valve seat and the equipment to be installed, then screw the safety valve into the installation hole 3. During the screwing process of the safety valve, the bottom of the safety valve contacts the valve plate 5 and presses the valve plate 5 to gradually open the valve plate 5, so that gas can normally flow into the chamber of the safety valve, realizing the protection function of the safety valve. When the safety valve is gradually screwed out, the valve plate 5 is gradually closed as the safety valve exits under the elastic force of the elastic element 6, thus closing the docking port.

[0023] As can be seen from the above, the connection part 2 in the present utility model is used to connect it with the equipment that needs to install the safety valve. The installation hole 3 is used to screw the safety valve into, so as to realize the assembly of the safety valve to the equipment to be installed through the transfer of this valve seat. At the same time, by arranging a valve plate 5 that can open towards the docking port inside the channel 4 of the valve seat, arranging an elastic element 6 connected to the valve plate 5 to block the opening of the valve plate 5 on one side of the valve plate 5 close to the docking port, and making the valve plate 5 in a closed state under the resistance of the elastic element 6. When the safety valve is screwed into the channel 4, the screwed-in safety valve is used to push the valve plate 5 into an open state, so that gas can normally flow into the chamber of the safety valve, realizing the protection function of the safety valve. When the safety valve is screwed out, the valve plate 5 automatically resets under the action of the elastic element 6 and automatically closes the channel 4. The structural design of this valve seat can automatically open the docking port when the safety valve is installed, and automatically close the docking port when the safety valve is removed, thus realizing the installation of the safety valve under pressure. Greatly simplifies the disassembly and installation work during the operation of equipment and pipelines.

[0024] Further, in this embodiment, internal threads are provided inside the installation hole 3, and the safety valve is assembled in the installation hole 3 by means of screwing. The connection part 2 in this embodiment is a threaded column with external threads, and the connection part 2 is screwed into the corresponding hole positions of pipelines or equipment by means of threaded assembly.

[0025] Specifically, the valve plate 5 can be opened in at least three ways:

[0026] The first one: Figures 1 - 2 As shown, the valve plate 5 includes multiple valve flaps 51, each valve flap 51 is arranged circumferentially within the channel 4; a connecting seat 10 is provided within the channel 4 and on the side of any valve flap 51 near the docking port, and each valve flap 51 is rotatably assembled on the corresponding connecting seat 10 via a shaft 11; there are multiple elastic elements 6, which are correspondingly arranged on the side of each valve flap 51 near the docking port and connected to the valve flap 51 to form support for the valve flap 51, and each valve flap 51 closes under the action of the corresponding elastic element 6 to block the channel 4, causing the valve plate 5 to enter a closed state. During the process of screwing the safety valve in, the end of each valve flap 51 near the center of the channel 4 is pushed to flip toward the docking port, thereby causing the valve plate 5 to enter an open state. At this time, all elastic elements 6 are in a compressed state. When the safety valve is screwed out, each valve flap 51 automatically resets under the elastic force of the elastic element 6 and re-seals the docking port.

[0027] Furthermore, the elastic element 6 in this embodiment is a torsion spring, and is sleeved on the shaft 11 in a one-to-one correspondence to provide stored force for the rotation of the valve flap 51 .

[0028] The second type: Figures 3 - 4 As shown, a limiting ring 7 is provided at the junction of the channel 4 and the mounting hole 3. The valve plate 5 is located on the side of the limiting ring 7 close to the docking port. One end of the elastic element 6 is fixed in the channel 4, and the other end is connected to the valve plate 5. The valve plate 5 is supported by the elastic element 6 and, with the support of the elastic element 6, abuts against the limiting ring 7 to form a seal at the abutting surface. There is also a gap between the outer peripheral surface of the valve plate 5 and the inner wall of the channel 4. During the screwing-in process of the safety valve, the valve plate 5 is squeezed toward the docking port to gradually separate the valve plate 5 from the limiting ring 7. At this time, the elastic element 6 is in a compressed state, and gas can flow normally into the safety valve chamber through the gap between the valve plate 5 and the peripheral wall of the channel 4, realizing the safety valve protection function. When the safety valve is gradually screwed out, the valve plate 5 automatically resets under the elastic force of the elastic element 6, resealing the docking port.

[0029] Furthermore, in this embodiment, a support ring 8 is provided in the channel 4 and on the side of the limiting ring 7 close to the docking port, and is spaced apart from the limiting ring 7. One end of the elastic element 6 is fixed to the support ring 8, and the other end thereof is fixed to the valve plate 5.

[0030] Furthermore, the elastic element 6 is a spring.

[0031] The third type: Figures 5 - 6As shown in the figure, the valve plate 5 is movably installed on one side of the limit ring 7 close to the docking port through the connecting shaft 9, and can flip towards the docking port with the connecting shaft 9 as the rotation center. Moreover, the valve plate 5 abuts against the limit ring 7 under the resistance of the elastic element 6 and forms a seal on the abutting surface. During the screwing-in process of the safety valve, it pushes the side of the valve plate 5 away from the connecting shaft 9 to flip towards the docking port, and then makes the valve plate 5 enter the open state. At this time, the elastic element 6 is in a compressed state. When the safety valve is unscrewed, the valve plate 5 automatically resets under the elastic force of the elastic element 6 and closes the docking port again.

[0032] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A special valve seat for a safety valve, characterized in that: include: The invention relates to a mounting portion (1) and a connecting portion (2) for connecting with the equipment to be installed; the mounting portion (1) has a mounting hole (3) for the safety valve to enter, the connecting portion (2) has a docking port for docking with the equipment to be installed, and a channel (4) is provided between the mounting hole (3) and the docking port to connect the two; a valve plate (5) that can be opened toward the docking port is provided at the junction of the channel (4) and the mounting hole (3); an elastic element (6) connected to the valve plate (5) to prevent the valve plate (5) from opening is provided on one side of the valve plate (5) close to the docking port, and the valve plate (5) is in a closed state under the resistance of the elastic element (6).

2. The safety valve dedicated valve seat according to claim 1, characterized in that: The valve plate (5) includes a plurality of valve flaps (51), each valve flap (51) being arranged circumferentially in the channel (4); a connecting seat (10) is provided in the channel (4) and on a side of any valve flap (51) close to the docking port, and each valve flap (51) is rotatably assembled on the corresponding connecting seat (10) via a shaft (11); a plurality of elastic elements (6) are provided, and are arranged one by one on a side of each valve flap (51) close to the docking port and connected to the valve flap (51) to form support for the valve flap (51), and each valve flap (51) is closed under the action of the corresponding elastic element (6) to block the channel (4), so that the valve plate (5) enters a closed state.

3. The safety valve dedicated valve seat according to claim 2, characterized in that: The elastic element (6) is a torsion spring and is mounted on the shaft (11) in a one-to-one correspondence to provide storage force for the rotation of the valve flap (51).

4. The safety valve dedicated valve seat according to claim 1, characterized in that: A limiting ring (7) is provided at the junction of the channel (4) and the mounting hole (3).

5. The safety valve dedicated valve seat according to claim 4, characterized in that: The valve plate (5) is located on a side of the limiting ring (7) close to the docking port, one end of the elastic element (6) is fixed in the channel (4), and the other end is connected to the valve plate (5), the valve plate (5) is supported by the elastic element (6), and is attached to the limiting ring (7) under the support of the elastic element (6) and forms a seal on the attached surface, and there is a distance between the outer peripheral surface of the valve plate (5) and the inner wall of the channel (4).

6. The valve seat for safety valve according to claim 5, characterized in that: A support ring (8) is provided in the channel (4) and on a side of the limit ring (7) close to the docking port. The support ring (8) is spaced apart from the limit ring (7). One end of the elastic element (6) is fixed to the support ring (8), and the other end is fixed to the valve plate (5).

7. The valve seat for safety valve according to claim 1, characterized in that: The valve plate (5) is movably mounted on a side of the limiting ring (7) close to the docking port via a connecting shaft (9), and can be turned toward the docking port with the connecting shaft (9) as the rotation center. The valve plate (5) is attached to the limiting ring (7) under the resistance of the elastic element (6) and forms a seal on the attached surface.

8. The safety valve seat according to any one of claims 1 to 7, characterized in that: The interior of the mounting hole (3) is provided with an internal thread.

9. The safety valve seat according to any one of claims 1 to 7, characterized in that: The connecting part (2) is a threaded column with external threads.

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