Safety device for water injection of spherical tank

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a spherical tank water injection safety device which comprises a spherical tank, a tank outside water injection pipeline, a tank inside water injection pipeline and a supporting part. A water injection line tank top hand valve is arranged at the top of the spherical tank; one end of the out-tank water injection pipeline is connected with the water injection line tank top hand valve, and the other end is connected with a water source; one end of the in-tank water injection pipeline is connected with the water injection pipeline tank top hand valve, and the other end of the in-tank water injection pipeline extends to the position close to the bottom of the inner cavity of the spherical tank and is connected with a slow flow diffusion pipe; and the supporting part is arranged between the inner wall of the spherical tank and the in-tank water injection pipeline. The flow velocity of water flow can be reduced, water uniformly settles to the bottom of the spherical tank, impact on liquefied gas at the bottom after water enters the tank bottom is reduced, the phenomenon that a large amount of liquefied gas is generated is reduced, and the safety of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical industry technical field, concretely is a kind of safety device of ball tank water injection. BACKGROUND

[0002] In the chemical production process, when fire occurs at the bottom of the ball tank or the flange at the bottom of the ball tank leaks during operation, to avoid the liquefied gas in the ball tank from leaking and causing fire due to open flames or static electricity, water injection at the bottom of the tank is usually used to take advantage of the density difference between water and liquefied gas, so that water with a higher density is at the bottom of the ball tank, and liquefied gas is above the water, thereby ensuring safety on site. However, during use, water is injected from the bottom of the ball tank, and due to the high outlet pressure of the water injection pump, the water entering the bottom of the tank collides with the liquefied gas at the bottom, and there is a large amount of liquefied gas at the bottom of the tank, which cannot achieve safety effects. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a safety device for ball tank water injection, which can reduce the flow rate of water flow, make the water uniformly settle at the bottom of the ball tank, reduce the impact on the liquefied gas at the bottom after the water enters the bottom of the tank, and thereby reduce the occurrence of a large amount of liquefied gas phenomenon, and improve the safety of the device.

[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme of a safety device for ball tank water injection, which comprises a ball tank, an external water injection pipeline, an internal water injection pipeline, and a support part. The top of the ball tank is provided with a water injection line tank top hand valve. One end of the external water injection pipeline is connected with the water injection line tank top hand valve, and the other end is connected with a water source. One end of the internal water injection pipeline is connected with the water injection line tank top hand valve, and the other end extends to a position close to the bottom of the inner cavity of the ball tank and is connected with a slow-flow diffusion pipe. The support part is arranged between the inner wall of the ball tank and the internal water injection pipeline.

[0005] Further, the internal water injection pipeline is vertically arranged inside the ball tank.

[0006] Further, the slow-flow diffusion pipe is Y-shaped, and the slow-flow diffusion pipe is provided with a water passing hole.

[0007] Further, the plane where the Y-shaped slow-flow diffusion pipe is located is perpendicular to the axis of the internal water injection pipeline.

[0008] Further, the plane where the Y-shaped slow-flow diffusion pipe is located is parallel to the axis of the internal water injection pipeline.

[0009] Further, the bottom of the ball tank is connected with an inlet / outlet pipeline.

[0010] Further, the inlet / outlet pipeline is provided with a pipeline shut-off valve.

[0011] Further, the tank outside water injection pipeline is provided with a tank bottom water injection control valve, the tank bottom water injection control valve is connected with a water injection pump, and the water injection pump is connected with a water source.

[0012] Further, the water injection pump is installed outside a tank area of the spherical tank.

[0013] The device has the advantages that: the water injection pipeline in the tank is arranged, the water injection pipeline in the tank extends from the tank top to the tank bottom and is connected with the slow-flow diffusion pipe, so that the flow speed of water is reduced through the slow-flow diffusion pipe at the end of the water injection pipeline in the tank, water is uniformly settled to the bottom of the spherical tank, the impact on the bottom liquefied gas after water is injected into the tank is reduced, the phenomenon of a large amount of liquefied gas is reduced to occur, the safety of the device is improved, the bottom of the spherical tank is filled with water with a larger density, the bottom flange ignition point or leakage point is filled with water, and the safety of property and personnel on site is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic view of a safety device for water injection of a spherical tank according to an embodiment of the present application;

[0015] Figure 2 FIG. 2 is a structural schematic view of a slow-flow diffusion pipe in the embodiment of the present application; Figure 1

[0016] Figure 3 FIG. 3 is a structural schematic view of a safety device for water injection of a spherical tank according to another embodiment of the present application;

[0017] Figure 4 FIG. 4 is a top view structural schematic view of the slow-flow diffusion pipe in the embodiment of the present application; Figure 3

[0018] FIG. 5 is a top view of a support rod connection position in the embodiment of the present application; Figure 5 FIG. 6 is a schematic view of the drawings;

[0019]

[0020] 100, spherical tank, 110, water injection pipeline tank top hand valve, 120, inlet / outlet pipeline, 121, pipeline cut-off valve, 122, tank bottom hand valve,

[0021] 200, tank outside water injection pipeline, 210, tank bottom water injection control valve, 220, water injection pump,

[0022] 300, water injection pipeline in the tank, 310, slow-flow diffusion pipe, 311, water hole,

[0023] 400, support part, 410, support rod, 420, clamp. DETAILED DESCRIPTION

[0024] ​​To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] A safety device for filling a spherical tank with water includes a spherical tank 100, an external water injection pipeline 200, an internal water injection pipeline 300, and a support 400. A water injection line top valve 110 is installed on the top of the spherical tank 100. One end of the external water injection pipeline 200 is connected to the water injection line top valve 110, and the other end is connected to a water source. One end of the internal water injection pipeline 300 is connected to the water injection line top valve 110, and the other end extends to a position near the bottom of the inner cavity of the spherical tank 100 and is connected to a slow-flow diffuser 310. The support 400 is disposed between the inner wall of the spherical tank 100 and the internal water injection pipeline 300, and the support 400 serves to fix the internal water injection pipeline 300.

[0026] The aforementioned safety device for water injection into the spherical tank includes an in-tank water injection pipeline 300. The in-tank water injection pipeline 300 extends from the top edge of the tank to the bottom edge and is connected to a slow-flow diffuser 310. This slow-flow diffuser 310 at the end of the in-tank water injection pipeline 300 reduces the flow velocity of the water, allowing the water to settle evenly to the bottom of the spherical tank 100. As a result, the bottom of the spherical tank 100 is filled with water of higher density, ensuring that the ignition point or leakage point of the bottom flange is filled with water, thus guaranteeing the safety of property and personnel on site.

[0027] As an example, in this embodiment, the other end of the water injection pipeline 300 extends to a distance of 500mm from the bottom of the inner cavity of the spherical tank 100.

[0028] In one embodiment, the water injection pipeline 300 is vertically installed inside the spherical tank 100.

[0029] In one embodiment, the slow-flow diffuser 310 is Y-shaped and has water passage holes 311.

[0030] See Figure 1 and Figure 2 In another embodiment, the plane of the Y-shaped slow-flow diffuser 310 is parallel to the axis of the water injection line 300 inside the tank.

[0031] See Figure 3 and Figure 4 In one embodiment, the plane of the Y-shaped slow-flow diffuser 310 is perpendicular to the axis of the water injection line 300 inside the tank. It should be noted that, in conjunction with the reference... Figure 5Specifically, the support part 400 comprises a support rod 410 and a hoop 420 fixed to the support rod 410. During installation, the support rod 410 is detachably fixed to the inner wall of the spherical tank 100, and then the hoop 420 is wrapped around the in-tank water injection pipeline 300, and then the hoop 420 is installed on the support rod 410 through bolts and nuts.

[0032] In an embodiment, the bottom of the spherical tank 100 is connected with the in / out material pipeline 120.

[0033] It should be noted that the material in the spherical tank 100 is in gas-liquid two phases, the bottom of the spherical tank is liquid-phase material, and the top is gas-phase material. The existing water injection method is to inject water through the bottom liquid-phase material pipeline, i.e. Figure 1 the in / out material pipeline 120, specifically, the water injection pipeline is connected between the pipeline cut-off valve 121 and the tank bottom hand valve 122. In this arrangement, the bottom liquid-phase material pipeline can be used as a passage for the outflow of the bottom liquid-phase material, and also as a passage for the injection of water into the tank body. Since the bottom liquid-phase material pipeline of the spherical tank 100 has a valve and needs to pass material in both directions, it must be connected to the tank bottom opening and the in / out material, and the in-tank water injection pipeline 300 cannot be directly passed through the tank by setting a slow-flow diffusion pipe 310 in the tank. Therefore, in the present embodiment, water can be directly injected into the tank from the top gas-phase space through the in-tank water injection pipeline 300, without affecting the in / out material pipeline 120 connected to the bottom, thereby achieving better water injection effect.

[0034] In an embodiment, the in / out material pipeline 120 is provided with a pipeline cut-off valve 121 and a tank bottom hand valve 122.

[0035] In an embodiment, the tank bottom water injection control valve 210 is provided on the out-of-tank water injection pipeline 200, the tank bottom water injection control valve 210 is connected with a water injection pump 220, and the water injection pump 220 is connected with a water source.

[0036] As shown in Figure 1 , specifically, the pipeline cut-off valve 121 is electrically connected with a PLC device, the tank bottom water injection control valve 210 is electrically connected with the PLC device, and the water injection pump 220 is electrically connected with the PLC device. The PLC device, i.e. the remote control system, is arranged in a control room, receives various signal sources on site, and controls the related control valves on site, i.e. the pipeline cut-off valve 121 and the tank bottom water injection control valve 210.

[0037] In an embodiment, the water injection pump 220 is installed outside the tank area of the spherical tank 100 to supply water to the out-of-tank water injection pipeline 200 in the tank area.

[0038] The safety device for water injection of the spherical tank is provided with a tank internal water injection pipeline 300, when a fire occurs at the bottom of the spherical tank 100 or the bottom flange of the spherical tank leaks, a remote alarm system receives an on-site alarm signal, immediately closes the pipeline cut-off valve 121, starts the water injection pump 220, opens the tank bottom water injection control valve 210, injects water into the spherical tank 100 from the top of the spherical tank 100, the water enters the spherical tank 100 from top to bottom through the tank internal water injection pipeline 300, and the flow rate of the water is reduced through the slow-flow diffusion pipe 310 at the end of the tank internal water injection pipeline 300, so that the water uniformly settles at the bottom of the spherical tank 100, so that the bottom of the spherical tank 100 is filled with water with a higher density, the bottom flange ignition point or leakage point is filled with water, so as to ensure the safety of the property and personnel on site.

[0039] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0041] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

Claims

1. A safety device for water injection of a spherical tank, characterized by: include The spherical tank is equipped with a water injection line and a manual valve on the top. An external water injection pipeline is connected at one end to the manual valve on the top of the tank, and at the other end to a water source. The water injection pipeline inside the tank has one end connected to the manual valve on the top of the water injection line, and the other end extends to the bottom of the inner cavity of the spherical tank and is connected to a slow-flow diffuser. The support is located between the inner wall of the spherical tank and the water injection pipeline inside the tank.

2. A safety device for water injection of a spherical tank according to claim 1, characterized in that: The water injection pipeline is vertically installed inside the spherical tank.

3. The safety device for water injection into a spherical tank according to claim 1, characterized in that: The slow-flow diffuser is Y-shaped and has water passage holes.

4. The safety device for water injection into a spherical tank according to claim 3, characterized in that: The plane containing the Y-shaped slow-flow diffuser is perpendicular to the axis of the water injection pipeline inside the tank.

5. A safety device for water injection into a spherical tank according to claim 3, characterized in that: The plane containing the Y-shaped slow-flow diffuser is parallel to the axis of the water injection pipeline inside the tank.

6. The safety device for water injection into a spherical tank according to claim 1, characterized in that: The bottom of the spherical tank is connected to inlet / outlet pipelines.

7. A safety device for water injection into a spherical tank according to claim 6, characterized in that: The inlet / outlet pipelines are equipped with pipeline shut-off valves.

8. The safety device for water injection into a spherical tank according to claim 1, characterized in that: The external water injection pipeline is equipped with a bottom water injection control valve, which is connected to a water injection pump, and the water injection pump is connected to a water source.

9. A safety device for water injection into a spherical tank according to claim 8, characterized in that: The water injection pump is installed outside the tank area of ​​the spherical tank.

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