Flushing system for storage tank

Abstract

The utility model provides a flushing system for a storage tank, which comprises a drainage pipe and a connecting pipeline, and the connecting pipeline comprises a flow limiting orifice plate, a first pipe body, a second pipe body and an overflow pipe; the top end and the bottom end of the overflow pipe communicate with the bottom wall of the storage tank and the second pipe body correspondingly, the first pipe body and the second pipe body are assembled at the two ends of the flow limiting orifice plate, the flow limiting orifice plate is provided with an overflow hole in a penetrating mode, and the axes of the overflow hole, the first pipe body and the second pipe body coincide. The bottom end of the drainage pipe communicates with the first pipe body, and the top end of the drainage pipe penetrates through the bottom wall of the storage tank and then vertically extends to the position close to the top wall of the storage tank. The utility model is used for solving the problem that in the prior art, the installation and maintenance difficulty is large due to the fact that the structure is complex.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and more specifically to a flushing system for storage tanks. Background Technology

[0002] Storage tanks are containers used in long-distance oil and gas pipelines to store refined chemical substances such as acids, alkalis, alcohols, gases, and liquids. The sealing structure and collection system of the storage tank include a flushing system, which is used to detect and collect leaks of condensate media and provides an alarm function when the leakage is too large.

[0003] In existing flushing systems, the orifice plates are installed vertically and require branch lines for drainage, resulting in a complex structure and significant installation and maintenance difficulties. Therefore, it is necessary to improve existing flushing systems for liquid storage tanks to address these issues. Utility Model Content

[0004] The purpose of this utility model is to disclose a flushing system for storage tanks, in order to solve the problem that the existing technology has a relatively complex structure, which leads to greater difficulty in installation and maintenance.

[0005] To achieve the above objectives, this utility model provides a flushing system for storage tanks, comprising: a drain pipe and a connecting pipe, wherein the connecting pipe includes a flow-limiting orifice plate, a first pipe body, a second pipe body, and an overflow pipe;

[0006] The top and bottom ends of the overflow pipe are respectively connected to the bottom wall of the storage tank and the second pipe body. The first pipe body and the second pipe body are assembled at both ends of the flow limiting orifice plate. The flow limiting orifice plate is provided with an overflow hole. The axes of the overflow hole, the first pipe body and the second pipe body coincide with each other.

[0007] The bottom end of the drain pipe is connected to the first pipe body, and the top end of the drain pipe extends vertically to the top wall of the storage tank after passing through the bottom wall of the storage tank.

[0008] As a further improvement of this utility model, it also includes: a liquid level switch, which is mounted on the top of the storage tank, and the sensing part of the liquid level switch passes through the top wall of the storage tank and is located inside the storage tank.

[0009] As a further improvement of this utility model, a drain pipe is connected to the side wall of the storage tank near the top wall, and the drain pipe is detachably connected to a flow stop.

[0010] As a further improvement of this utility model, a first connecting flange is provided at the end of the first pipe body away from the second pipe body, and a second connecting flange is provided at the end of the second pipe body away from the first pipe body.

[0011] As a further improvement of this utility model, both the first connecting flange and the second connecting flange have gaskets.

[0012] As a further improvement of this utility model, a connecting plate is fixedly connected to the side wall of the storage tank, and the connecting plate has connecting holes.

[0013] A mounting bracket is fixed to the side wall of the storage tank, and the mounting bracket is used to assemble the nameplate.

[0014] As a further improvement of this utility model, the liquid level switch has a gland.

[0015] As a further improvement of this utility model, the end face of the first tube body that connects with the flow-limiting orifice plate and the end face of the second tube body that connects with the flow-limiting orifice plate are both chamfered.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the first pipe body, the second pipe body, the flow-limiting orifice plate, and the overflow pipe, when condensate is generated in the storage tank, it falls to the bottom wall of the tank due to gravity and flows into the second pipe body through the overflow pipe connected to the bottom wall. When the condensate in the second pipe body accumulates to a certain amount, its liquid level gradually rises and flows into the first pipe body through the overflow hole opened in the flow-limiting orifice plate, and finally flows into the collection device from the first pipe body. This achieves the purpose of discharging and collecting the normal volume of condensate generated in the storage tank. However, when a large amount of condensate is abnormally generated in the storage tank, if the condensate accumulates to the point where the liquid level rises to the opening at the top of the drain pipe, the condensate flows directly into the first pipe body through the drain pipe and then into the collection device, thus bypassing the flow-limiting orifice plate and discharging the condensate into the collection device at a faster speed. With the above-described arrangement of connecting pipelines, compared with the existing tank flushing system, the purpose of rapid drainage can be achieved without setting up branch lines. The structure is simpler and easier to assemble and maintain. Attached Figure Description

[0017] Figure 1 This is a perspective view used to illustrate the specific structure of the storage tank in this utility model;

[0018] Figure 2 In this utility model Figure 1 Schematic diagram of cross section along the FF direction. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0020] It should be understood that in this application, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the technical solution.

[0021] Refer Figure 1 and Figure 2 As shown, for the flushing system for the storage tank designed by the present utility model, it includes a first pipe body 22, a second pipe body 23, a flow-limiting orifice plate 21 and an overflow pipe 24. When a condensation medium is generated in the storage tank 3, it falls to the bottom wall of the storage tank 3 under the action of gravity and flows into the second pipe body 23 through the overflow pipe 24 connected to the bottom wall of the storage tank 3. When the condensation medium in the second pipe body 23 accumulates to a certain amount, its liquid level gradually rises and flows into the first pipe body 22 through the overflow hole 211 opened in the flow-limiting orifice plate 21, and finally flows into a collecting device (not shown) through the first pipe body 22, so as to achieve the purpose of discharging and collecting the normal volume of condensation medium generated in the storage tank 3. When a large amount of condensation medium is abnormally generated in the storage tank 3, if the condensation medium accumulates in the storage tank 3 until the liquid level rises to the opening at the top of the drain pipe 1, the condensation medium directly flows into the first pipe body 22 through the drain pipe 1 and then into the collecting device, so as to achieve the purpose of bypassing the flow-limiting orifice plate 21 and discharging the condensation medium into the collecting device at a faster speed. Through the above arrangement of the connecting pipelines, compared with the flushing system for the storage tank in the prior art, the purpose of rapid drainage can be achieved without setting a branch, the structure is simpler, and it is easier to assemble and perform subsequent maintenance.

[0022] Refer Figure 1 and Figure 2As shown in the figure, a specific embodiment of the flushing system for a storage tank in the present utility model (hereinafter simply referred to as the flushing system) includes a drain pipe 1 and a connecting pipeline 2. The connecting pipeline 2 includes a flow-limiting orifice plate 21, a first pipe body 22, a second pipe body 23, and an overflow pipe 24. The top and bottom ends of the overflow pipe 21 are respectively connected to the bottom wall of the storage tank 3 and the second pipe body 23. The first pipe body 22 and the second pipe body 23 are assembled at both ends of the flow-limiting orifice plate 21. The flow-limiting orifice plate 21 is provided with an overflow hole 211 through it, and the axes of the overflow hole 211, the first pipe body 22, and the second pipe body 23 coincide with each other. The bottom end of the drain pipe 1 is connected to the first pipe body 22, and the top end of the drain pipe 1 passes through the bottom wall of the storage tank 3 and extends vertically to a position near the top wall of the storage tank 3. Further, the flushing system further includes a liquid level switch 4, which is assembled at the top end of the storage tank 3. The sensing part of the liquid level switch 4 passes through the top wall of the storage tank 3 and is located inside the storage tank 3. The liquid level switch 4 has a gland head 41.

[0023] After the condensation medium is generated in the storage tank 3, it falls to the bottom of the storage tank 3 under the action of gravity and flows into the second pipe body 23 through the overflow pipe 24 connected to the bottom of the storage tank 3. Under normal conditions, the generation speed of the condensation medium in the storage tank 3 is relatively slow, and a small amount of the generated condensation medium in the storage tank 3 accumulates in the second pipe body 23 at a relatively slow speed through the overflow pipe 24. The condensation medium gradually accumulates in the second pipe body 23 until the liquid level rises to flow into the first pipe body 22 through the overflow hole 211, and then is discharged from the connecting pipeline by the collecting device connected to the first pipe body 22.

[0024] When the condensation medium is generated in the storage tank 3 at a speed exceeding the normal speed, due to the flow-limiting effect of the overflow orifice plate 21, the condensation medium exceeding the flow rate limited by the overflow hole 211 accumulates in the storage tank 3 and the liquid level gradually rises. It should be noted that in this embodiment, the sensing part of the liquid level switch 4 has a two-stage liquid level alarm device. When the liquid level in the storage tank 3 rises to trigger the first-stage alarm device of the liquid level switch 4 but does not reach the second-stage alarm device, and when the liquid level in the storage tank 3 rises to trigger the second-stage alarm device of the liquid level switch 4, the liquid level switch 4 emits two alarm signals and transmits them to the computer to remind the personnel to repair it. Further, when the liquid level in the storage tank 3 rises to be higher than the top opening of the drain pipe 1, the condensation medium directly flows into the first pipe body 22 through the drain pipe 1 and then enters the collecting device. Since the condensation medium directly flows into the first pipe body 22 through the drain pipe 1 without passing through the flow-limiting orifice plate 21 with a flow-limiting effect, it can be discharged from the storage tank 3 at a relatively fast speed, has a good drain effect and a simple structure. Compared with the prior art that requires an additional drain branch for the flushing system, it has the effects of being convenient for assembly and maintenance.

[0025] Refer Figure 1 and Figure 2As shown, a drain pipe 31 is connected to the side wall of the storage tank 3 near the top wall. The drain pipe 31 is detachably connected to a flow stop member 311. Specifically, the drain pipe 31 is threadedly connected to the flow stop member 311. When the cooling medium is generated in the storage tank 3 at a normal speed, the flow stop member 311 is assembled to the drain pipe 31 to prevent leakage of the storage tank 3. If the storage tank 3 has an abnormality that needs to be repaired and the cooling medium inside is at a high level, the flow stop member 311 is removed to further accelerate the discharge speed of the cooling medium in the storage tank 3. A connecting plate 32 is fixedly connected to the side wall of the storage tank 3, and the connecting plate 32 is provided with a connecting hole 321. Specifically, two connecting holes 321 are longitudinally provided in the connecting plate 32. Connecting members such as bolts (not shown) pass through the connecting holes 321 to fix the storage tank 3 at a specific installation position. An installation frame 33 is fixedly connected to the side wall of the storage tank 3, and the installation frame 33 is used to assemble a nameplate 331.

[0026] As shown in Figure 1 and Figure 2 As shown, a first connecting flange 221 is provided at one end of the first pipe body 22 away from the second pipe body 23, and a second connecting flange 231 is provided at one end of the second pipe body 23 away from the first pipe body 22. Both the first connecting flange 221 and the second connecting flange 231 have gaskets 25. Chamfers (not marked) are formed on the end faces of the first pipe body 22对接 with the flow limiting orifice plate 22 and the second pipe body 23对接 with the flow limiting orifice plate 22. It should be noted that, as can be seen from the foregoing, the first pipe body 22 is used to connect the collection device. Further, the first pipe body 22 is docked with the collection device through the first connecting flange 221. Secondly, the second pipe body 23 is docked with a sealing member (not shown) through the second connecting flange 231 to maintain the sealed state inside the storage tank 3.

[0027] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent implementation manners or changes made without departing from the technical spirit of the present utility model should be included within the protection scope of the present utility model.

[0028] In addition, it should be understood that although this specification is described according to the implementation manners, not every implementation manner only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. A flushing system for storage tanks, characterized in that, include: The drain pipe and connecting pipe, wherein the connecting pipe includes a flow limiting orifice plate, a first pipe body, a second pipe body, and an overflow pipe; The top and bottom ends of the overflow pipe are respectively connected to the bottom wall of the storage tank and the second pipe body. The first pipe body and the second pipe body are assembled at both ends of the flow limiting orifice plate. The flow limiting orifice plate is provided with an overflow hole. The axes of the overflow hole, the first pipe body and the second pipe body coincide with each other. The bottom end of the drain pipe is connected to the first pipe body, and the top end of the drain pipe extends vertically to the top wall of the storage tank after passing through the bottom wall of the storage tank.

2. The tank flushing system according to claim 1, characterized in that, Also includes: A level switch is mounted on the top of a storage tank, and the sensing part of the level switch passes through the top wall of the storage tank and is located inside the storage tank.

3. The flushing system for storage tanks according to claim 2, characterized in that, A drain pipe is connected to the side wall of the storage tank near the top wall, and the drain pipe is detachably connected to a flow stop.

4. The tank flushing system according to claim 1, characterized in that, A first connecting flange is provided at the end of the first pipe body away from the second pipe body, and a second connecting flange is provided at the end of the second pipe body away from the first pipe body.

5. The tank flushing system according to claim 4, characterized in that, Both the first connecting flange and the second connecting flange have gaskets.

6. The flushing system for storage tanks according to claim 1, characterized in that, A connecting plate is fixed to the side wall of the storage tank, and the connecting plate has connecting holes; A mounting bracket is fixed to the side wall of the storage tank, and the mounting bracket is used to assemble the nameplate.

7. The flushing system for storage tanks according to claim 2, characterized in that, The level switch has a gland.

8. The flushing system for storage tanks according to claim 1, characterized in that, Both the end face of the first tube body that connects with the flow-limiting orifice plate and the end face of the second tube body that connects with the flow-limiting orifice plate are chamfered.

Images