A self-liquid sealing overflow device

Abstract

The invention discloses a self-liquid-sealed overflow device, comprising a main container, wherein a labyrinth liquid seal is arranged in the main container, wherein the labyrinth liquid seal comprises an inner container with an opening at the upper end and an outer container, wherein the outer container is inverted and sleeved outside the inner container, wherein a No. 1 gap is left between the outer wall of the inner container and the inner wall of the outer container, wherein the No. 1 gap is communicated with the main container, and a No. 2 gap is left between the upper port of the inner container and the bottom of the outer container, wherein the No. 1 gap is communicated with the No. 2 gap, and further comprises an insert-type pipe, wherein the lower end of the insert-type pipe penetrates through the bottom of the outer container and extends into the inner container, wherein the upper end of the insert-type pipe extends and bends and then penetrates through the inner wall of the main container to extend to the outside of the main container, wherein the insert-type pipe extending to the outside of the main container bends downward and extends so that the insert-type pipe forms an inverted U-shaped structure, and an exhaust pipe for preventing siphoning is connected to the top of the insert-type pipe, wherein the insert-type pipe has the technical characteristics of compact structure, low cost, maintenance-free, high safety, and the like.

Description

Technical Field

[0001] The invention relates to an overflow device, more specifically, to a self-liquid-sealed overflow device, belonging to the field of storing gas-liquid mixed media. Background Art

[0002] In some industrial equipment, many containers storing gas-liquid mixed media generally have a height limit on the liquid level at the bottom of the container to prevent liquid backflow. When the height exceeds the specified height, the excess liquid is required to be automatically discharged to a specified position outside the container through a pipe. However, if only one pipe is used to lead the liquid out of the container, firstly, siphoning is easily generated, resulting in the liquid at the bottom of the container being sucked out, and secondly, there is a risk of gas discharge when the liquid level is too low, which is particularly critical when harmful gases are stored in the container. If the lead-out pipe is controlled by a valve, firstly, the structure is complex and the cost is increased, secondly, human intervention and regular maintenance are required, and thirdly, the control components are at risk of failure. When the valve or instrument fails, it will be difficult to meet the process requirements. In addition, the common tubular liquid seal structure is large in size and uneconomical. Summary of the invention

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a self-liquid-sealed overflow device with technical characteristics such as compact structure, low cost, maintenance-free, and high safety.

[0004] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0005] A self-liquid-sealed overflow device comprises a main container, wherein a labyrinth liquid seal is arranged in the main container, wherein the labyrinth liquid seal comprises an inner container and an outer container with an opening at the upper end, wherein the outer container is inverted and sleeved outside the inner container, wherein a No. 1 gap is left between the outer wall of the inner container and the inner wall of the outer container, wherein the No. 1 gap is communicated with the main container, wherein a No. 2 gap is left between the upper port of the inner container and the bottom of the outer container, wherein the No. 1 gap is communicated with the No. 2 gap, and further comprises an insert-type pipe, wherein the lower end of the insert-type pipe penetrates through the bottom of the outer container and extends into the inner container, wherein the upper end of the insert-type pipe extends and bends and then penetrates through the inner wall of the main container to extend outside the main container, wherein the insert-type pipe extending outside the main container bends and extends downward so that the insert-type pipe forms an inverted U-shaped structure, and an exhaust pipe for preventing siphoning is connected to the top of the insert-type pipe.

[0006] As an improvement, two labyrinth liquid seals are provided, and the two labyrinth liquid seals are symmetrically arranged to act on the two ports of the inserted pipe respectively.

[0007] As an improvement, the insertable connecting pipe penetrates through the outer container and is connected to the outer wall of the insertable connecting pipe and sealed.

[0008] As an improvement, a connecting rod is connected between the bottom of the inner container and the main container.

[0009] As an improvement, the insertable connecting pipe extends into the inner container 3 and is arranged close to the bottom of the inner container.

[0010] As an improvement, the bottom of the main container is connected to a pipeline, and the pipeline is connected to at least one isolation valve.

[0011] Beneficial effects: the labyrinth liquid seal is placed below the liquid level in the main container. When the liquid level in the main container is lower than the labyrinth liquid seal, because the inner container of the labyrinth liquid seal is full of liquid, the liquid level of the plug-in pipe can balance the pressure difference between the inside and outside of the container, thereby preventing the gas in the main container from being discharged. When the liquid level in the main container is higher than the plug-in pipe in the main container, the liquid begins to overflow and discharge through the plug-in pipe. Due to the effect of the anti-siphon exhaust pipe, when the liquid level difference between the plug-in pipe and the main container is sufficient to balance the pressure difference between the inside and outside of the main container, the liquid stops discharging and the liquid seal is restored. When overflow occurs in the main container, the labyrinth liquid seal outside the main container will be filled with liquid or the labyrinth liquid seal outside the main container will be actively filled with liquid. If the liquid seal in the main container fails, the labyrinth liquid seal outside the main container can also prevent the risk of harmful gases in the main container from being discharged to the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of embodiment 1 of the present invention.

[0013] Figure 2 It is a structural schematic diagram of embodiment 2 of the present invention.

[0014] Figure 3 It is a schematic diagram of the labyrinth liquid seal structure of the present invention. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0016] Example 1

[0017] like Figure 1 , 3The figure shows a specific embodiment of a self-liquid-sealed overflow device, which is a self-liquid-sealed overflow device, including a main container 1, characterized in that: a labyrinth liquid seal 2 is arranged in the main container 1, and the labyrinth liquid seal 2 includes an inner container 3 with an upper end opening and an outer container 4, the outer container 4 is inverted and sleeved outside the inner container 3, and a No. 1 gap is left between the outer wall of the inner container 3 and the inner wall of the outer container 4, and the No. 1 gap is communicated with the main container 3, and a No. 2 gap is left between the upper port of the inner container 3 and the bottom of the outer container 4, and the No. 1 gap is communicated with the No. 2 gap, and also includes an inserted pipe 5, the lower end of the inserted pipe 5 passes through the bottom of the outer container 4 and extends into the inner container 3, the upper end of the inserted pipe 5 extends and bends and then passes through the inner wall of the main container 1 to extend to the outside of the main container 1, the inserted pipe 5 extending to the outside of the main container 1 bends downward and extends so that the inserted pipe 4 forms an inverted U-shaped structure, and the top of the inserted pipe 4 is connected with an exhaust pipe 6 for preventing siphoning.

[0018] Example 2

[0019] like Figure 2 , 3 As shown, two labyrinth liquid seals 2 are provided, and the two labyrinth liquid seals 2 are symmetrically arranged to act on the two ports of the plug-in pipe 5 respectively. When the liquid level in the main container 1 is higher than the plug-in pipe 5 in the main container 1, the liquid begins to overflow and discharge through the plug-in pipe 5. Due to the effect of the anti-siphon exhaust pipe 6, when the liquid level difference between the plug-in pipe 5 and the main container 1 is sufficient to balance the pressure difference between the inside and outside of the main container 1, the liquid stops discharging and the liquid seal is restored. When overflow occurs in the main container 1, the labyrinth liquid seal 2 outside the main container 1 will be filled with liquid or the labyrinth liquid seal 2 outside the main container 1 will be actively filled with liquid. If the liquid seal in the main container 1 fails, the labyrinth liquid seal 2 outside the main container 1 can also prevent the risk of harmful gases in the main container 1 being discharged to the bottom.

[0020] As an improved embodiment, the insertable pipe 5 passes through the outer container 4 and is connected to the outer wall of the insertable pipe 4 and sealed. The structure is simple and the outer container 4 can be fixed in the main container 1.

[0021] As an improved embodiment, a connecting rod is connected between the bottom of the inner container 3 and the main container 1, and the inner container is fixed in the main container 1 by supporting the inner container through the connecting rod.

[0022] As an improved embodiment, the insertable pipe 5 extends into the inner container 3 and is arranged close to the bottom of the inner container 3, so that it can respond quickly as the liquid level changes.

[0023] As an improved embodiment, the bottom of the main container 1 is connected to a pipeline, and at least one isolation valve is connected to the pipeline to inject a gas-liquid mixed medium into the main container 1.

[0024] Finally, it should be noted that the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by ordinary technicians in this field should be considered as the protection scope of the present invention.

Claims

1. A self-liquid-sealed overflow device, comprising a main container (1), characterized in that: The main container (1) is provided with a labyrinth liquid seal (2), the labyrinth liquid seal (2) comprising an inner container (3) with an opening at the upper end and an outer container (4), the outer container (4) being inverted and sleeved outside the inner container (3), a first gap being left between the outer wall of the inner container (3) and the inner wall of the outer container (4), the first gap being communicated with the main container (1), a second gap being left between the upper end of the inner container (3) and the bottom of the outer container (4), the first gap being communicated with the second gap, and also comprising an insertable pipe (5), the lower end of the insertable pipe (5) passing through the bottom of the outer container (4) and extending into the inner container (3), the upper end of the insertable pipe (5) extending and bending and then passing through the inner wall of the main container (1) to extend outside the main container (1), the insertable pipe (5) extending outside the main container (1) bending and extending downward so that the insertable pipe (5) forms an inverted U-shaped structure, and the top of the insertable pipe (5) is communicated with an exhaust pipe (6) for preventing siphoning.

2. A self-liquid-sealed overflow device according to claim 1, characterized in that: Two labyrinth liquid seals (2) are provided, and the two labyrinth liquid seals (2) are symmetrically arranged to act on two ports of the inserted pipe (5) respectively.

3. A self-liquid-sealed overflow device according to claim 1 or 2, characterized in that: The insertable pipe (5) passes through the outer container (4) and is connected to the outer wall of the outer container (4) in a sealed manner.

4. A self-liquid-sealed overflow device according to claim 1, characterized in that: A connecting rod is connected between the bottom of the inner container (3) and the main container (1).

5. A self-liquid-sealed overflow device according to claim 1, 2 or 4, characterized in that: The insertable connecting pipe (5) extends into the inner container (3) and is arranged close to the bottom of the inner container (3).

6. A self-liquid-sealed overflow device according to claim 1, characterized in that: The bottom of the main container (1) is connected to a pipeline, and at least one isolating valve is connected to the pipeline.

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