Pressure-resistant and temperature-resistant remote alarm sealing structure for rupture disk

Abstract

The utility model discloses a pressure-resistant and temperature-resistant remote alarm sealing structure for a rupture disk, which relates to the technical field of remote alarm devices for rupture disks and comprises a rupture disk device, a sealing structure, an alarm cable and an explosion-proof junction box. The rupture disk device comprises a rupture disk, an upper clamp holder, a lower clamp holder and a clamp holder through hole; the sealing structure comprises a locking stud, a sealing inner core and a locking nut; the rupture disk device can be used for sealing a remote alarm device in a high-pressure and high-temperature occasion, and the problem that an existing rupture disk device cannot be sealed in the high-temperature and high-pressure occasion is solved; the sealing device is good in sealing performance, one end of the sealing device is connected with the rupture disk device in a welded mode, dangerous sources such as sparks generated when the device is abnormal can be completely isolated in the device, and safety of places is protected. The device is simple in structure, safe to use and low in field installation requirement, the labor cost generated during field installation is reduced, and serious consequences such as explosion caused by field installation errors are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of rupture disk remote alarm devices, in particular to a pressure-resistant and temperature-resistant remote alarm sealing structure for a rupture disk. Background Technique

[0002] The rupture disk is one of the important safety accessories of a pressure vessel. When the pressure vessel is over-pressurized, the rupture disk can quickly burst and release the internal pressure, preventing the pressure from continuing to rise and avoiding the explosion of the pressure vessel. In the places where rupture disks are used, there are flammable and explosive media in many places. If the overpressure inside the pressure vessel is caused by combustion or the like, once these media leak into the place where they are located, they will inevitably ignite the flammable media existing in the surrounding places, thus possibly triggering a large explosion.

[0003] In the prior art, some users will select a wire-type remote alarm device for remote monitoring together with the rupture disk device according to their needs. Such an alarm device will reserve an interface for threading the guiding wire at the clamp of the rupture disk device. It is very difficult to achieve complete sealing after threading the guiding wire through this interface. Once the sealing performance does not meet the standard, the above-mentioned explosion hazard will be caused. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pressure-resistant and temperature-resistant remote alarm sealing structure for a rupture disk, so as to solve the problem of explosion caused by the wire-type remote alarm device in the prior art for remote monitoring together with the rupture disk device due to unqualified sealing performance.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pressure-resistant and temperature-resistant remote alarm sealing structure for a rupture disk, including a rupture disk device and a sealing structure connected thereto, and an alarm cable is arranged inside the rupture disk device and the sealing structure; the rupture disk device includes a rupture disk, and an upper clamp and a lower clamp are respectively arranged on the upper and lower sides thereof. A clamp through hole is radially penetrated through the side wall of the upper clamp, and a sealing structure is connected through the clamp through hole; the sealing structure includes a locking stud connected to the clamp through hole, and a stud shaft hole is penetrated through the center thereof. A sealing inner core is arranged at one end of the stud shaft hole far away from the rupture disk device. Two inner core through holes are axially penetrated through the inside of the sealing inner core; a locking nut is arranged outside one end of the stud shaft hole far away from the rupture disk device, and a nut shaft hole is penetrated through the center of the locking nut; the alarm cable sequentially penetrates through the clamp through hole, the stud shaft hole, the inner core through hole, and the nut shaft hole and is connected to an external cable.

[0006] Preferably, an internal thread is provided at one end of the through hole of the gripper close to the outer wall of the upper gripper, and external threads of the stud are provided on the outer walls near both ends of the locking stud. One end of the external threads of the stud is connected to the through hole of the gripper, and a locking nut is threadedly connected to the other end.

[0007] Preferably, at one end of the locking nut connected to the locking stud, a nut portion that increases radially outward is provided, and an internal thread of the nut that matches the external thread of the stud is provided on the inner wall of the nut portion.

[0008] Preferably, a part of the sealing inner core is embedded and arranged inside the shaft hole of the stud.

[0009] Preferably, both the locking stud and the locking nut are made of stainless steel and are in a cylindrical structure.

[0010] Preferably, the sealing inner core is made of polytetrafluoroethylene. The sealing inner core is in the shape of a cylinder with a conical surface, one end is a plane, and the other end is a 120° conical surface.

[0011] Preferably, an explosion-proof junction box is connected to the rear end of the locking nut. The alarm cable and the external cable are connected inside the explosion-proof junction box; the external cable is connected to the connection control center.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model can be used for the sealing of remote alarm devices in high-pressure and high-temperature occasions. Some of the currently used general-purpose sealing products on the market can only be used for sealing in low-pressure and low-temperature places, and some are difficult to install. Field workers require a high installation level and it is time-consuming and laborious. These products are difficult to meet the urgent need of the rupture disc device for high-temperature and high-pressure sealing. The present utility model solves the problem that the prior rupture disc device could not be sealed in high-temperature and high-pressure occasions; the provided sealing structure of the present utility model has good sealing performance, and one end is welded to the rupture disc device, which can completely isolate the dangerous sources such as sparks generated during the abnormal operation of the device inside the device and protect the safety of the place; the structure of the present utility model is simple, safe to use, has low requirements for on-site installation, reduces the labor cost generated during on-site installation, and prevents serious consequences such as explosion caused by on-site installation mistakes. Brief Description of the Drawings

[0014] Figure 1 is a schematic diagram of the installation and use of the present utility model;

[0015] Figure 2 is Figure 1 a schematic structural diagram;

[0016] Figure 3 is a schematic diagram of the sealing structure;

[0017] Figure 4 Schematic diagram of the locking stud

[0018] Figure 5 Schematic diagram of the sealing inner core

[0019] Figure 6 Schematic diagram of the locking nut

[0020] In the figure: rupture disc device - 1, rupture disc - 11, upper clamp - 12, lower clamp - 13, clamp through - hole - 14, sealing structure - 2, locking stud - 21, stud shaft hole - 22, sealing inner core - 23, inner core through - hole - 24, stud external thread - 25, locking nut - 26, nut part - 27, nut internal thread - 28, nut shaft hole - 29, alarm cable - 3, explosion - proof junction box - 4. Specific implementation mode

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0022] Please refer to Figures 1-6 , Figure 1 which is the installation and use schematic diagram of the present invention; Figure 2 is Figure 1 structural schematic diagram; Figure 3 is the sealing structure schematic diagram; Figure 4 is the locking stud schematic diagram; Figure 5 is the sealing inner core schematic diagram; Figure 6 is the locking nut schematic diagram.

[0023] The present invention provides a remote - alarm sealing structure for a rupture disc with pressure and temperature resistance, including a rupture disc device 1, and the rupture disc device 1 is connected with a sealing structure 2.

[0024] The rupture disc device 1 includes a rupture disc 11 arranged in the middle, and an upper clamp 12 and a lower clamp 13 are respectively arranged on the upper and lower sides of the rupture disc 11. A clamp through - hole 14 is radially penetrated through the side wall of the upper clamp 12, and an internal thread is arranged at one end of the clamp through - hole 14 close to the outer wall of the upper clamp 12, and is thread - connected with the sealing structure 2; An alarm cable 3 is also arranged on the rupture disc device 1, and the alarm cable 3 sequentially passes through the clamp through - hole 14 and the sealing structure 2 and is connected with an external cable, and the external cable is connected to a connection control center, so as to perform remote alarm.

[0025] The sealing structure 2 includes a locking stud 21 with one end connected to the bursting disc device 1, and a stud shaft hole 22 is penetrated through its axis. A sealing inner core 23 is provided at one end of the stud shaft hole 22 away from the bursting disc device 1. A part of the sealing inner core 23 is embedded inside the stud shaft hole 22, and two inner core through holes 24 are axially penetrated through the inside of the sealing inner core 23; external threads 25 are provided on the outer wall of the locking stud 21 near both ends. One end of the external threads 25 is connected to the holder through hole 14, and a locking nut 26 is threadedly connected to the other end; a nut portion 27 with a radially increasing outer diameter is provided at one end of the locking nut 26 connected to the locking stud 21, and internal threads 28 matching the external threads 25 are provided on the inner wall of the nut portion 27; a nut shaft hole 29 is penetrated through the axis of the locking nut 26; the alarm cable 3 sequentially penetrates through the stud shaft hole 22, the inner core through hole 24, and the nut shaft hole 29 and is connected to an external cable.

[0026] Both the locking stud 21 and the locking nut 26 are made of stainless steel into a cylindrical structure. The sealing inner core 23 is made of polytetrafluoroethylene, which is corrosion-resistant and has good deformation effect. Through its own deformation, it completely clamps the internal passing wire, locks the reserved space of the wire, and achieves a good sealing effect; during the process of screwing the locking stud 21 and the locking nut 25 tightly with each other, the sealing inner core 23 is gradually compressed and deformed, so that the sealing inner core 23 seals between the locking stud 21 and the locking nut 25.

[0027] The shape of the sealing inner core 23 is a cylinder with a conical surface, one end is a plane, and the other end is a 120° conical surface.

[0028] An explosion-proof junction box 4 is connected to the rear end of the locking nut 26, which is used for explosion-proof sealing of the connection part between the alarm cable 3 and the external cable, so as to ensure high sealing performance.

[0029] The utility model can be used for the sealing of remote alarm devices in high-pressure and high-temperature occasions. Some of the currently used general-purpose sealing products on the market can only be used for the sealing of low-pressure and low-temperature places, and some are difficult to install. Field workers require a high installation level and are time-consuming and laborious. These products are difficult to meet the urgent need of the bursting disc device for high-temperature and high-pressure sealing. The utility model solves the problem that the bursting disc device could not be sealed in high-temperature and high-pressure occasions in the past; the sealing structure provided by the utility model has good sealing performance itself, and one end is welded to the bursting disc device, which can completely isolate the dangerous sources such as sparks generated during the abnormal operation of the device inside the device and protect the safety of the place; the structure of the utility model is simple, safe to use, has low requirements for on-site installation, reduces the labor cost generated during on-site installation, and prevents serious consequences such as explosion caused by on-site installation mistakes.

[0030] Although embodiments of the present utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, those of ordinary skill in the art can understand that without departing from the principle and spirit of the present utility model and without creative work, all other embodiments obtained by making various changes, modifications, substitutions, and variations to these embodiments fall within the scope of protection of the present utility model.

Claims

1. A remote alarm sealing structure for pressure and temperature resistance of a rupture disc, characterized in that: It includes a rupture disc device (1) and a sealing structure (2) connected thereto, and an alarm cable (3) is built in the rupture disc device (1) and the sealing structure (2); the rupture disc device (1) includes a rupture disc (11), and an upper clamp (12) and a lower clamp (13) are respectively arranged on its upper and lower sides. A clamp through hole (14) is radially penetrated through the side wall of the upper clamp (12), and the sealing structure (2) is connected through the clamp through hole (14); the sealing structure (2) includes a locking stud (21) connected to the clamp through hole (14), and a stud shaft hole (22) is penetrated through its axis. A sealing inner core (23) is arranged at one end of the stud shaft hole (22) far from the rupture disc device (1), and two inner core through holes (24) are axially penetrated through the inner side of the sealing inner core (23); a locking nut (26) is arranged outside one end of the stud shaft hole (22) far from the rupture disc device (1), and a nut shaft hole (29) is penetrated through the axis of the locking nut (26); the alarm cable (3) sequentially penetrates through the clamp through hole (14), the stud shaft hole (22), the inner core through hole (24), and the nut shaft hole (29) and is connected to an external cable.

2. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 1, characterized in that: One end of the clamp through hole (14) close to the outer wall of the upper clamp (12) is provided with an internal thread, and external threads (25) of the stud are arranged on the outer walls of the locking stud (21) close to both ends. One end of the external thread (25) of the stud is connected to the clamp through hole (14), and the other end is threadedly connected to the locking nut (26).

3. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 2, characterized in that: One end of the locking nut (26) connected to the locking stud (21) is provided with a nut portion (27) that increases radially outwards, and a nut internal thread (28) matching the external thread (25) of the stud is arranged on the inner wall of the nut portion (27).

4. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 3, characterized in that: A part of the sealing inner core (23) is embedded and arranged inside the stud shaft hole (22).

5. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 4, characterized in that: Both the locking stud (21) and the locking nut (26) are made of stainless steel and are in a cylindrical structure.

6. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 5, characterized in that: The sealing inner core (23) is made of polytetrafluoroethylene. The sealing inner core (23) is in the shape of a cylinder with a conical surface, one end is a plane, and the other end is a 120° conical surface.

7. The remote alarm sealing structure with pressure and temperature resistance for bursting discs according to claim 6, characterized in that: An explosion-proof junction box (4) is connected to the rear end of the locking nut (26). The alarm cable (3) and the external cable are connected inside the explosion-proof junction box (4); the external cable is connected to the connection control center.

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