False opening prevention device for emergency shut-off valve

Abstract

The utility model relates to cutout valve technical field especially an urgent cutout valve anti -misoperation opening device, a plurality of first clamping blocks and spring leaf are fixedly connected in the lower portion of outer cover inner wall, the spring leaf outer wall is in abutment with the inner cover, this urgent cutout valve anti -misoperation opening device, a plurality of first clamping blocks and second clamping block are aligned, then the operator extrudes the outer cover upwards, the outer cover compresses spring leaf, and first clamping block enters second clamping block, and second clamping block clamps first clamping block, at this moment, rotating the outer cover can drive the inner cover to rotate, and the inner cover is selected on the new end cover, then the outer cover is loosened, and the spring leaf drives first clamping block to be far away from second clamping block, and the outer cover rotation does not cause the inner cover to rotate, and the inner cover and the outer cover can play the role of heat insulation, can reduce the damage of fusible element due to environmental temperature or or operator misoperation, make the valve body in the valve manual opening, cause the dangerous goods in the tank car to leak, spray, fire and other accidents to happen the situation.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, specifically to an emergency shut-off valve anti-accidental opening device. Background Technology

[0002] Emergency shut-off valves, also known as safety shut-off valves, are valves that quickly close or open in the event of an emergency to prevent accidents. They are suitable for handling coal gas, natural gas, and liquefied petroleum gas. Due to the extreme dangers of tank truck transportation, emergency shut-off valves are commonly installed in tank trucks, usually located at the bottom. In reality, during transport, tank truck emergency shut-off valves are frequently misoperated and left open, ultimately leading to accidents such as hazardous material leaks, spills, and fires.

[0003] For example, an integrated emergency shut-off valve with announcement number "CN222085295U" involves assembling the valve disc and spring from top to bottom into the valve body, followed by installing the valve cover. This assembly of the upper part of the emergency shut-off valve is not only convenient to install and disassemble, but also, because the valve body, valve disc, and valve cover are all integrated structures, the elimination of the valve stem reduces the sealing between the valve stem and valve cover, thus reducing leakage points in the overall structure compared to traditional structures, improving sealing reliability and safety performance. Simultaneously, the radial movement of the spring is restricted by the inner wall of the spring limiting groove, replacing the radial limiting function of the screw during spring extension and contraction. However, the easily accessible element on the end cover of this shut-off valve is prone to breakage due to ambient temperature or operator error, causing manual opening of the valve inside the valve body, potentially leading to accidents such as leakage, spillage, or fire of hazardous materials inside the tanker truck. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the easy-to-open element on the end cap is easily lifted and damaged due to ambient temperature or operator misoperation, which causes the valve in the valve body to be manually opened, leading to accidents such as leakage, spraying, and fire of dangerous goods in the tank truck. Therefore, an emergency shut-off valve anti-misoperation device is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design an emergency shut-off valve anti-misoperation device, including a valve body and a valve cover. The valve body is threadedly connected to the valve cover via a sealing ring. An end cover is installed below the valve body. A protective structure is provided below the end cover. The protective structure includes an outer cover. The upper part of the inner wall of the outer cover is connected to the inner cover via a sliding bearing. Multiple first locking blocks and spring plates are fixedly connected to the lower part of the inner wall of the outer cover. The outer wall of the spring plate abuts against the inner cover.

[0006] Preferably, a plurality of second locking blocks are fixedly connected to the lower part of the inner cover.

[0007] Preferably, pointers are fixedly connected to the outer sides of both the inner and outer covers.

[0008] Preferably, a Hall sensor is installed below the valve cover.

[0009] Preferably, an audible and visual alarm is installed below the valve body.

[0010] The present invention proposes an emergency shut-off valve anti-misoperation device, which has the following advantages: through the cooperation of the end cover and the protective structure, the pointer on the outer cover is aligned with the pointer on the inner cover. At this time, multiple first locking blocks are aligned with second locking blocks. Then, the operator pushes the outer cover upward, the outer cover compresses the spring plate, the first locking block enters the second locking block, and the second locking block locks the first locking block. At this time, rotating the outer cover can drive the inner cover to rotate, and the inner cover is placed on the new end cover. Then, the outer cover is released, the spring plate drives the first locking block away from the second locking block. The rotation of the outer cover will not cause the inner cover to rotate. The inner cover and the outer cover can play a role in heat insulation, which can reduce the situation where the fusible element is damaged due to ambient temperature or operator misoperation, causing the valve in the valve body to be manually opened, resulting in accidents such as leakage, spraying, and fire of dangerous goods in the tank truck. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A partial front sectional view; Figure 3 for Figure 2 A magnified view of part A in the diagram; Figure 4 for Figure 2 A magnified view of part B in the diagram; Figure 5 for Figure 4 A magnified view of part of C; Figure 6 for Figure 1 A magnified view of part of D.

[0012] In the diagram: 1. Valve body, 2. Hall sensor, 3. Protective structure, 301. Outer cover, 302. Spring plate, 303. Inner cover, 304. First locking block, 305. Second locking block, 306. Pointer, 4. Valve cover, 5. End cover, 6. Audible and visual alarm. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings: See attached document Figure 1-6In this embodiment, an emergency shut-off valve anti-misoperation device includes a valve body 1 and a valve cover 4. The valve body 1 is threadedly connected to the valve cover 4 via a sealing ring. An end cover 5 is installed below the valve body 1. A protective structure 3 is provided below the end cover 5. The protective structure 3 includes an outer cover 301. The upper part of the inner wall of the outer cover 301 is connected to the inner cover 303 via a sliding bearing. A plurality of first locking blocks 304 and spring plates 302 are fixedly connected to the lower part of the inner wall of the outer cover 301. The outer wall of the spring plates 302 abuts against the inner cover 303.

[0014] Multiple second locking blocks 305 are fixedly connected to the bottom of the inner cover 303. Pointers 306 are fixedly connected to the outer sides of both the inner cover 303 and the outer cover 301. A Hall sensor 2 is installed below the valve cover 4. The Hall sensor 2 is a DRV5023 Hall sensor. An audible and visual alarm 6 is installed below the valve body 1. The audible and visual alarm 6 is a YS-BBJ-8W explosion-proof audible and visual alarm.

[0015] Working principle: When using the emergency shut-off valve anti-misoperation device: The valve body 1 is installed on the tank truck via the flange on the left side. The flow of hazardous media inside the tank truck can be blocked by the valve body 1. When the actuating component on valve body 1 is damaged and manual opening of the valve is required, the fusible element on end cover 5 must be manually destroyed. The operator first rotates the outer cover 301 until the pointer on the outer cover 301 aligns with the pointer on the inner cover 303, as shown in the attached diagram. Figure 6 As shown, at this time, multiple first locking blocks 304 and second locking blocks 305 are aligned. Then, the operator pushes the outer cover 301 upward, the outer cover 301 compresses the spring sheet 302, the first locking blocks 304 enter the second locking blocks 305, and the second locking blocks 305 lock the first locking blocks 305. At this time, rotating the outer cover 301 can drive the inner cover 302 to rotate, so that the inner cover 302 is unscrewed from the end cover 5. Then, the fusible element can be damaged, and the valve in the valve body 1 can be manually opened. Through the Hall sensor 2, the rising and falling position of the valve disc in the valve body 1 can be monitored, and the states such as "fully closed", "fully open", and "half-open and stuck" can be accurately judged. The signal is transmitted to the external speaker through telecommunications, and an audible prompt is generated to prevent misoperation. The audible and visual alarm 6 adopts a high-decibel speaker and a high-brightness LED light, supports multiple modes such as manual triggering and automatic induction triggering, and can quickly issue an audible and visual alarm when an abnormality is detected. It can also transmit alarm signals to the control center in real time through the remote monitoring system, which can play a warning role. Then, replace the new end cap, aligning the pointer on the outer cover 301 (the groove machined on the outer cover 301 facilitates the replacement of the inner cover 302 and the outer cover 301 as a whole without the need for additional tools) with the pointer on the inner cover 303. At this time, multiple first locking blocks 304 align with second locking blocks 305. Then, the operator pushes the outer cover 301 upwards, compressing the spring sheet 302. The first locking blocks 304 enter the second locking blocks 305, and the second locking blocks 305 lock the first locking blocks 305. At this time, rotating the outer cover 301 can drive the inner cover 302 to rotate. Move the inner cover 302 onto the new end cover 5, then release the outer cover 301. The spring plate 302 drives the first locking block 304 away from the second locking block 305. The rotation of the outer cover 301 will not cause the inner cover 303 to rotate. The interlayer between the inner cover 303 and the outer cover 301 is filled with heat insulation material (not shown in the figure). The inner cover 303 and the outer cover 301 can play a heat insulation role, which can reduce the occurrence of accidents such as leakage, spraying, and fire of dangerous goods in the tank truck due to damage to fusible elements caused by ambient temperature or operator misoperation, which would cause the valve in the valve body 1 to be manually opened.

[0016] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An emergency shut-off valve anti-misoperation device, comprising a valve body (1) and a valve cover (4), wherein the valve body (1) is threadedly connected to the valve cover (4) via a sealing ring, characterized in that: An end cap (5) is installed below the valve body (1). A protective structure (3) is provided below the end cap (5). The protective structure (3) includes an outer cover (301). The upper part of the inner wall of the outer cover (301) is connected to the inner cover (303) through a sliding bearing. A plurality of first locking blocks (304) and spring plates (302) are fixedly connected to the lower part of the inner wall of the outer cover (301). The outer wall of the spring plate (302) abuts against the inner cover (303).

2. The emergency shut-off valve anti-misoperation device according to claim 1, characterized in that: Multiple second locking blocks (305) are fixedly connected below the inner cover (303).

3. The emergency shut-off valve anti-misoperation device according to claim 1, characterized in that: Pointers (306) are fixedly connected to the outer sides of both the inner cover (303) and the outer cover (301).

4. The emergency shut-off valve anti-misoperation device according to claim 1, characterized in that: A Hall sensor (2) is installed below the valve cover (4).

5. The emergency shut-off valve anti-misoperation device according to claim 1, characterized in that: An audible and visual alarm (6) is installed below the valve body (1).

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