Water seal tank and container having the same

Abstract

The present invention discloses a water seal tank and a container having the same, the water seal tank comprises: a tank body, a pressure release port is provided on the tank body, a connecting pipe is provided on the bottom surface of the chamber of the tank body, a first pipe, the upper end of the first pipe is closed and the lower end is connected with the chamber; a second pipe, the first pipe is sleeved outside the second pipe, the upper end of the second pipe is located in the first pipe and the lower end face is closed, and a first annular space is formed between the first pipe and the second pipe; a third pipe, the third pipe is arranged in the second pipe, the upper end of the third pipe is closed and the lower end is spaced from the lower end face of the second pipe, and a second annular space is formed between the third pipe and the second pipe; a fourth pipe, the upper end of the fourth pipe is located in the third pipe and the lower end is connected with the outside, and a third annular space is formed between the fourth pipe and the third pipe. The water seal tank according to the embodiment of the present invention has a compact structure, a small amount of water seal, and a small change in water level.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, in particular to a water seal tank and a container having the water seal tank. Background Art

[0002] The water seal tank is a safety device used to protect a sealed container. When the pressure in the sealed container is too high, the pressure in the sealed container is released through the water seal tank. The water seal tank in the related art is large in size, has a large amount of water seal, and a complex structure. Condensed water or external evaporation can easily cause the water level to change. The liquid level needs to be checked regularly, otherwise the designed release pressure cannot be reached. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, one aspect of the present invention provides a water seal tank, which has a compact structure, a small amount of water seal, and a small water level change.

[0005] Another aspect of the present invention provides a container having the above-mentioned water seal tank, which solves the antifreeze problem of the water seal tank and does not require the addition of antifreeze liquid when used in cold conditions, thereby improving operational stability.

[0006] According to the first aspect of the present invention, the water seal tank of the embodiment comprises: a tank body for containing water seal water, the tank body is provided with a pressure release port, a connecting pipe is provided on the bottom surface of the chamber of the tank body, the upper end of the connecting pipe is connected with the chamber, and the lower end of the connecting pipe is connected with the outside of the tank body, a first tube, the first tube is arranged in the chamber, the upper end of the first tube is closed, and the lower end of the first tube is connected with the chamber; a second tube, the first tube sleeve is arranged outside the second tube, the upper end of the second tube is located in the first tube, the lower end of the second tube downwardly passes through the bottom wall of the tank body and extends to the outside of the tank body, the lower end surface of the second tube is closed, a first annular space is formed between the first tube and the second tube, and the lower end of the first annular space is connected with the lower chamber ; A third tube, wherein the third tube is arranged in the second tube, the upper end of the third tube is closed, the lower end of the third tube is located in the second tube and is spaced from the lower end surface of the second tube, a second annular space is formed between the third tube and the second tube, the upper end of the second annular space and the upper end of the first annular space are connected to each other and are both connected to the pressure release port; a fourth tube, wherein the upper end of the fourth tube is located in the third tube, the lower end of the fourth tube extends downward out of the third tube and passes through the lower end surface of the second tube to be connected to the outside, a third annular space is formed between the fourth tube and the third tube, the upper end of the third annular space is respectively connected to the inner cavity of the third tube and the inner cavity of the fourth tube, and the lower end of the third annular space is connected to the second annular space.

[0007] According to the water seal tank of the embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are sequentially arranged from the outside to the inside and are arranged on the tank body, so that the structure is simplified, and the amount of water seal water and the water level change in the water seal tank can be reduced. The amount of water seal water is automatically balanced according to the pressure, and there is no need to check the liquid level regularly, thereby avoiding the problem in the related art that the designed release pressure cannot be reached due to water level changes caused by the entry of condensed water or external evaporation.

[0008] According to one embodiment of the present invention, it further includes a water supply pipe disposed on the tank body, wherein the inner end of the water supply pipe extends into the chamber and is communicated with the first annular space and the second annular space.

[0009] According to yet another embodiment of the present invention, the upper end of the fourth tube is flush with the bottom surface of the chamber, and an inverted L-shaped pressure release tube is connected to the pressure release port.

[0010] According to a further embodiment of the present invention, the chamber of the tank body is divided into an upper chamber and a lower chamber by a partition, and the partition is provided with a connecting hole connecting the upper chamber with the first annular space and the second annular space, and the pressure release port is provided on the top wall of the upper chamber, and the inner end of the water supply pipe passes through the partition and is connected with the first annular space and the second annular space.

[0011] Optionally, the upper ends of the first tube and the third tube are respectively connected to the partition and closed by the partition; the second tube is installed on the bottom wall of the tank body, and the fourth tube is installed on the lower end wall of the second tube.

[0012] Optionally, the tank body is divided into an upper tank body and a lower tank body, the upper tank body is mounted on the partition and the outer periphery of the partition extends outward beyond the upper tank body, and the upper end of the lower tank body is provided with a flange, and the flange is connected to the part of the partition extending outward beyond the upper tank body by bolts to connect the upper tank body and the lower tank body together.

[0013] Optionally, an outer annular groove and an inner annular groove are respectively provided on the lower surface of the partition, the upper end of the first tube is fitted in the outer annular groove, and the upper end of the third tube is fitted in the inner annular groove.

[0014] The container according to the second embodiment of the present invention comprises a container body and a water seal can, wherein the water seal can is the water seal can described in the above embodiment, the lower part of the water seal can is located in the container body, and the upper part of the water seal can is located outside the container body.

[0015] The container according to the third aspect of the present invention comprises a container body and a water seal can, wherein the water seal can is the water seal can described in the above embodiment, the lower part of the water seal can is located in the container body, and the upper part of the water seal can is located outside the container body.

[0016] The container according to the embodiment of the present invention solves the antifreeze problem of the water seal tank, and does not need to add antifreeze liquid when used in cold conditions, thereby improving the operation stability.

[0017] According to one embodiment of the present invention, the water seal tank is mounted on the outer top wall of the container body through the partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 2 is a three-dimensional schematic diagram of a water seal tank according to an embodiment of the present invention.

[0019] Figure 2 is a schematic diagram of a container according to an embodiment of the present invention, wherein the liquid level of the water seal tank is at a normal pressure level.

[0020] Figure 3 is a schematic diagram of a container according to an embodiment of the present invention, wherein the liquid level of the water seal tank is at a positive pressure protection liquid level.

[0021] Figure 4 is a schematic diagram of a container according to an embodiment of the present invention, wherein the liquid level of the water seal tank is at a negative pressure protection liquid level.

[0022] Reference numerals:

[0023] Container 100,

[0024] Water seal tank 10,

[0025] Tank body 11, pressure release port 1101, chamber 1102, upper chamber 1103, lower chamber 1104, connecting pipe 111, partition 112, connecting hole 1121, outer annular groove 1122, inner annular groove 1123, upper tank body 1131, lower tank body 1132, flange 11321,

[0026] Connecting pipe 12,

[0027] The first annular space 1301, the second annular space 1302, the third annular space 1302,

[0028] The first tube 131, the second tube 132, the third tube 133, the fourth tube 134,

[0029] Water supply pipe 14, pressure release pipe 15,

[0030] Container body 20. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] Reference below Figure 1-Figure 4 A water seal can 10 according to an embodiment of the present invention is described.

[0033] like Figure 1-Figure 4 As shown, the water seal tank 10 according to the embodiment of the present invention includes: a tank body 11 for containing water seal water, a first pipe 131 , a second pipe 132 , a third pipe 133 and a fourth pipe 134 .

[0034] The tank body 11 is provided with a pressure release port 1101, and a connecting pipe 12 is provided on the bottom surface of the chamber 1102 of the tank body 11, the upper end of the connecting pipe 12 is connected to the chamber 1102, and the lower end of the connecting pipe 12 is connected to the outside of the tank body 11, so that the chamber 1102 in the tank body 11 is connected to the outside of the tank body 11. The first pipe 131, the second pipe 132, the third pipe 133 and the fourth pipe 134 are respectively provided on the tank body 11 and extend along the axial direction of the tank body 11, and the first pipe 131, the second pipe 132, the third pipe 133 and the fourth pipe 134 are arranged from the outside to the inside.

[0035] Specifically, the first tube 131 is disposed in the chamber 1102, the upper end of the first tube 131 is closed, and the lower end of the first tube 131 is communicated with the chamber 1102. The first tube 131 is sleeved outside the second tube 132, the upper end of the second tube 132 is located inside the first tube 131, the lower end of the second tube 132 passes downward through the bottom wall of the tank body 11 and extends outside the tank body 11, the lower end surface of the second tube 132 is closed, and a first annular space 1301 is formed between the first tube 131 and the second tube 132, and the lower end of the first annular space 1301 is communicated with the lower chamber 1104.

[0036] The third tube 133 is arranged in the second tube 132, the upper end of the third tube 133 is closed, the lower end of the third tube 133 is located in the second tube 132 and is separated from the lower end surface of the second tube 132, and a second annular space 1302 is formed between the third tube 133 and the second tube 132, and the upper end of the second annular space 1302 and the upper end of the first annular space 1301 are connected to each other and are both connected to the pressure release port 1101.

[0037] The upper end of the fourth tube 134 is located in the third tube 133, and the lower end of the fourth tube 134 extends downward from the third tube 133 and passes through the lower end surface of the second tube 132 to communicate with the outside, and a third annular space 1303 is formed between the fourth tube 134 and the third tube 133, and the upper ends of the third annular space 1303 are respectively communicated with the inner cavities of the third tube 133 and the fourth tube 134, and the lower end of the third annular space 1303 is communicated with the second annular space 1302.

[0038] According to the water seal tank 10 of the embodiment of the present invention, by sequentially arranging the first tube 131, the second tube 132, the third tube 133 and the fourth tube 134 from the outside to the inside and being arranged on the tank body 11, the structure is simplified, and the amount of water seal water and the water level change in the water seal tank 10 can be reduced. The amount of water seal water can be automatically balanced according to the pressure without the need to check the liquid level regularly, thereby avoiding the problem in the related art that the designed release pressure cannot be reached due to water level changes caused by the entry of condensed water or external evaporation.

[0039] According to an optional embodiment of the present invention, the tank body 11 , the first tube 131 , the second tube 132 , the third tube 133 and the fourth tube 134 are all made of non-metallic materials, have good resistance to corrosion from environmental media, and are beneficial to extending the service life of the water seal tank 10 .

[0040] According to one embodiment of the present invention, the tank body 11 of the water seal tank 10 is arranged in a vertical direction (such as Figure 1 The tank body 11 defines a chamber 1102 extending in the axial direction thereof. A pressure release port 1101 is provided at the top of the tank body 11, and a connecting pipe 12 extending upward in the axial direction thereof is provided at the bottom of the tank body 11. The connecting pipe 12 is connected to the chamber 1102 and the outside.

[0041] Further, the first tube 131, the second tube 132, the third tube 133 and the fourth tube 134 extend along the axial direction of the tank body 11 and are sequentially arranged from the outside to the inside, and the central axes of the first tube 131, the second tube 132, the third tube 133 and the fourth tube 134 coincide with each other. The inner wall of the first tube 131 and the outer wall of the second tube 132 define a first annular space 1301, the inner wall of the second tube 132 and the outer wall of the third tube 133 define a second annular space 1302, and the inner wall of the third tube 133 and the outer wall of the fourth tube 134 define a fourth annular space.

[0042] The lower end of the first annular space 1301 is connected to the chamber 1102, and the upper end of the first annular space 1301 is connected to the upper end of the second annular space 1302 and respectively connected to the pressure release port 1101. The lower end of the second annular space 1302 is connected to the lower end of the third annular space 1303, and the upper end of the third annular space 1303 is connected to the inner cavity of the third tube 133 and the inner cavity of the fourth tube 134.

[0043] In some examples, the upper end of the fourth tube 134 is flush with the bottom surface of the chamber 1102. That is, the fourth tube 134 extends downward from the bottom surface of the tank body 11 along the axial direction of the tank body 11, and when the liquid level of the water seal tank 10 is at the normal pressure level, the liquid level of the water seal water in the third annular space 1303 is flush with the upper end of the fourth tube 134.

[0044] The water seal tank 10 is placed in the container 100. The inner cavity of the container 100 is connected to the chamber 1102 of the tank body 11 through the connecting pipe 12, and the inner cavity of the container 100 is connected to the upper part of the inner cavity of the third tube 133 through the fourth tube 134, and the first annular space 1301 and the second annular space 1302 are connected to the outside through the pressure release port 1101.

[0045] like Figure 2 As shown, when the pressure in the container 100 is normal pressure, since the pressure in the container 100 is equal to the external pressure, the air pressure above the water seal water in the tank body 11 is equal to the air pressure in the first annular space 1301, and the air pressure in the second annular space 1302 is equal to the air pressure in the upper part of the inner cavity of the third tube 133. Therefore, at this time, the liquid level of the water seal water in the tank body 11 of the water seal tank 10 is flush with the liquid level of the water seal water in the first annular space 1301, and is flush with the upper end of the connecting tube 12, and the liquid level of the water seal water in the third annular space 1303 is flush with the liquid level of the water seal water in the second annular space 1302, and is flush with the upper end of the fourth tube 134.

[0046] like Figure 3 As shown, when the pressure inside the container 100 is positive pressure, since the pressure inside the container 100 is greater than the external pressure, the air pressure above the water seal in the tank body 11 is greater than the air pressure in the first annular space 1301, and the air pressure in the upper part of the inner cavity of the third tube 133 is greater than the air pressure in the second annular space 1302.

[0047] Therefore, under the action of the pressure difference, the seal water in the tank body 11 is pressed into the first annular space 1301, so that the liquid level of the seal water in the tank body 11 drops and the liquid level of the seal water in the first annular space 1301 rises. When the liquid level of the seal water in the tank body 11 drops to below the lower end of the first tube 131, the chamber 1102 of the tank body 11 is connected to the first annular space 1301, so that the gas in the tank body 11 enters the first annular space 1301 and is finally discharged from the pressure release port 1101 to achieve pressure relief.

[0048] At the same time, the seal water in the third annular space 1303 is pressed into the second annular space 1302 under the action of the pressure difference, so that the liquid level of the seal water in the third annular space 1303 drops and the liquid level of the seal water in the second annular space 1302 rises. In the process that the liquid level of the seal water in the tank body 11 drops to below the lower end of the first tube 131, the second annular space 1302 and the third annular space 1303 are always liquid-sealed by the seal water.

[0049] like Figure 4As shown, when the pressure inside the container 100 is negative pressure, since the pressure inside the container 100 is lower than the external pressure, the air pressure above the water seal in the tank body 11 is lower than the air pressure in the first annular space 1301, and the air pressure in the upper part of the inner cavity of the third tube 133 is lower than the air pressure in the second annular space 1302.

[0050] Therefore, the seal water in the first annular space 1301 is pressed into the tank body 11 under the action of the pressure difference, so that the liquid level of the seal water in the first annular space 1301 drops and the seal water in the tank body 11 overflows from the connecting pipe 12. When the liquid level of the seal water in the first annular space 1301 drops below the lower end of the first tube 131, the chamber 1102 of the tank body 11 is connected with the first annular space 1301, so that outside air enters the tank body 11 through the pressure release port 1101.

[0051] At the same time, the water seal in the second annular space 1302 is pressed into the third annular space 1303 under the action of the pressure difference, so that the liquid level of the water seal in the second annular space 1302 drops and the water seal in the third annular space 1303 overflows from the upper end of the fourth tube 134. In the process that the liquid level of the water seal in the first annular space 1301 drops to the lower end of the first tube 131, the second annular space 1302 and the third annular space 1303 are always liquid-sealed by the water seal.

[0052] In some examples, the pressure release port 1101 is connected to an inverted L-shaped pressure release tube 15 , which has a simple and compact structure and is easy to connect.

[0053] According to one embodiment of the present invention, the water seal tank 10 further includes a water supply pipe 14 provided on the tank body 11, the inner end of the water supply pipe 14 extends into the chamber 1102 and communicates with the first annular space 1301 and the second annular space 1302. Thus, by providing the water supply pipe 14 on the tank body 11 of the water seal tank 10, water seal water can be introduced into the first annular space 1301 and the second annular space 1302, thereby ensuring the reliability of the use of the water seal tank 10, that is, ensuring that the water seal tank 10 can reach the designed release pressure.

[0054] According to a further embodiment of the present invention, the chamber 1102 of the tank body 11 is divided into an upper chamber 1103 and a lower chamber 1104 by a partition 112. A connecting hole 1121 is provided on the partition 112. The connecting hole 1121 is located above the first annular space 1301 and the second annular space 1302 and connects the upper chamber 1103 with the first annular space 1301 and the second annular space 1302. The pressure release port 1101 is provided on the top wall of the upper chamber 1103. The inner end of the water supply pipe 14 passes through the partition 112 and is connected with the first annular space 1301 and the second annular space 1302.

[0055] like Figure 1-Figure 4As shown, in some examples, the tank body 11 is roughly formed into a cylindrical shape extending in the up-down direction, and the tank body 11 is provided with a Figure 2-Figure 4 The partition 112 extends in the left and right directions as shown. The partition 112 and the side walls of the tank body 11 and the top wall of the tank body 11 define an upper chamber 1103, and the top wall of the tank body 11 is provided with a pressure release port 1101 and a water replenishment port communicated with the upper chamber 1103.

[0056] Furthermore, the water supply pipe 14 extends axially along the tank body 11 and is inserted into the partition 112 through the water supply port, so that the water supply pipe 14 is respectively connected to the upper part of the first annular space 1301 and the upper part of the second annular space 1302, so that water sealing water can be introduced into the first annular space 1301 and the second annular space 1302, ensuring that the water seal tank 10 can reach the designed release pressure.

[0057] In some examples, the partition 112 defines a lower chamber 1104 with the side circumferential wall of the tank body 11 and the bottom wall of the tank body 11. The upper end of the first tube 131 and the upper end of the third tube 133 are respectively connected to the partition 112 and closed by the partition 112. The second tube 132 is installed on the bottom wall of the tank body 11, and the fourth tube 134 is installed on the lower end wall of the second tube 132, so that the upper part of the first annular space 1301 is connected with the upper part of the second annular space 1302, and the lower part of the second annular space 1302 is connected with the lower part of the third annular space 1303, so as to realize the water sealing function and pressure release function of the water sealing tank 10.

[0058] In some examples, the tank body 11 is divided into an upper tank body 1131 and a lower tank body 1132. The upper tank body 1131 is installed on the partition 112 and the outer periphery of the partition 112 extends outward beyond the upper tank body 1131. The upper end of the lower tank body 1132 is provided with a flange 11321. The flange 11321 is connected to the part of the partition 112 extending outward beyond the upper tank body 1131 by bolts to connect the upper tank body 1131 and the lower tank body 1132 together, with a compact structure and reliable connection.

[0059] In some examples, the lower surface of the partition 112 is respectively provided with an outer annular groove 1122 and an inner annular groove 1123 which are recessed inward relative to the lower surface, the outer annular groove 1122 is coaxially arranged with the inner annular groove 1123, the upper end of the first tube 131 is fitted in the outer annular groove 1122, thereby closing the upper end of the first tube 131, and the upper end of the third tube 133 is fitted in the inner annular groove 1123, thereby closing the upper end of the third tube 133.

[0060] Combine the following Figure 1-Figure 4 A container 100 according to an embodiment of the present invention is described.

[0061] like Figure 1-Figure 4As shown, a container 100 according to an embodiment of the present invention includes a container body 20 and a water seal tank 10. The water seal tank 10 is the water seal tank 10 described in the above embodiment, wherein the lower part of the water seal tank 10 is located inside the container body 20, and the upper part of the water seal tank 10 is located outside the container body 20.

[0062] The container 100 according to the embodiment of the present invention solves the antifreeze problem of the water seal tank 10 by adopting the water seal tank 10. When used in cold conditions, no antifreeze liquid needs to be added, thereby improving the operation stability.

[0063] In some examples, the container 100 includes a container body 20 and a water seal tank 10. The top of the tank body 11 of the water seal tank 10 is provided with an inverted L-shaped pressure release pipe 15 and a water supply pipe 14 inserted into the chamber 1102, and the water supply pipe 14 is connected to the upper part of the first annular space 1301 and the upper part of the second annular space 1302.

[0064] According to another embodiment of the present invention, a container 100 comprises a container body 20 and a water seal tank 10. The water seal tank 10 described in the above embodiment has a lower portion of the water seal tank 10 located inside the container body 20 and an upper portion of the water seal tank 10 located outside the container body 20. A partition 112 is provided in the tank body 11 of the water seal tank 10 to separate the chamber 1102 into an upper chamber 1103 and a lower chamber 1104.

[0065] In some examples, the upper ends of the first tube 131 and the third tube 133 are respectively connected to and closed by the partition 112. The second tube 132 is mounted on the bottom wall of the tank 11, and the fourth tube 134 is mounted on the lower end wall of the second tube 132.

[0066] In some examples, the water seal can 10 is mounted on the outer top wall of the container 100 via the partition 112 .

[0067] Specifically, the tank body 11 is divided into an upper tank body 1131 and a lower tank body 1132 . A seal is provided between the partition 112 and the upper end flange 11321 of the lower tank body 1132 and is connected by bolts, thereby ensuring a sealed connection between the partition 112 and the upper end flange 11321 of the lower tank body 1132 .

[0068] Furthermore, the upper end flange 11321 of the lower tank body 1132 is connected to the partition 112 and then fixed to the outer top wall of the container body 20 by bolts, and a seal is provided between the upper end flange 11321 of the lower tank body 1132 and the outer top wall of the container body 20, thereby ensuring the sealed connection between the container body 20 and the water seal tank 10.

[0069] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A water seal tank, characterized in that: include: A tank body for containing water seal water, the tank body is provided with a pressure release port, a connecting pipe is provided on the bottom surface of the chamber of the tank body, the upper end of the connecting pipe is connected with the chamber, and the lower end of the connecting pipe is connected with the outside of the tank body, a first tube, the first tube being disposed in the chamber, the upper end of the first tube being closed, and the lower end of the first tube being in communication with the chamber; a second tube, wherein the first tube sleeve is arranged outside the second tube, the upper end of the second tube is located inside the first tube, the lower end of the second tube passes downward through the bottom wall of the tank body and extends outside the tank body, the lower end surface of the second tube is closed, a first annular space is formed between the first tube and the second tube, and the lower end of the first annular space is communicated with the chamber; a third tube, the third tube being arranged in the second tube, the upper end of the third tube being closed, the lower end of the third tube being located in the second tube and spaced apart from the lower end surface of the second tube, a second annular space being formed between the third tube and the second tube, the upper end of the second annular space being in communication with the upper end of the first annular space and both being in communication with the pressure release port; a fourth tube, wherein the upper end of the fourth tube is located in the third tube, the lower end of the fourth tube extends downward from the third tube and passes through the lower end surface of the second tube to communicate with the outside, a third annular space is formed between the fourth tube and the third tube, the upper end of the third annular space is communicated with the inner cavity of the third tube and the inner cavity of the fourth tube respectively, and the lower end of the third annular space is communicated with the second annular space; The first tube, the second tube, the third tube and the fourth tube are all made of non-metallic materials.

2. The water seal tank according to claim 1, characterized in that: It also includes a water supply pipe arranged on the tank body, the inner end of which extends into the chamber and is communicated with the first annular space and the second annular space.

3. The water seal tank according to claim 1, characterized in that: The upper end of the fourth tube is flush with the bottom surface of the chamber, and an inverted L-shaped pressure release tube is connected to the pressure release port.

4. The water seal tank according to claim 2, characterized in that: The chamber of the tank body is divided into an upper chamber and a lower chamber by a partition, and a connecting hole is provided on the partition to connect the upper chamber with the first annular space and the second annular space. The pressure release port is provided on the top wall of the upper chamber, and the inner end of the water supply pipe passes through the partition to communicate with the first annular space and the second annular space.

5. The water seal tank according to claim 4, characterized in that: The upper ends of the first tube and the third tube are respectively connected to the partition and closed by the partition; the second tube is installed on the bottom wall of the tank body, and the fourth tube is installed on the lower end wall of the second tube.

6. The water seal tank according to claim 4, characterized in that: The tank body is divided into an upper tank body and a lower tank body, the upper tank body is mounted on the partition and the outer periphery of the partition extends outward beyond the upper tank body, the upper end of the lower tank body is provided with a flange, and the flange is connected to the part of the partition extending outward beyond the upper tank body by bolts to connect the upper tank body and the lower tank body together.

7. The water seal tank according to claim 4, characterized in that: An outer annular groove and an inner annular groove are respectively provided on the lower surface of the partition, the upper end of the first tube is fitted in the outer annular groove, and the upper end of the third tube is fitted in the inner annular groove.

8. A container, comprising a container body and a water seal can, wherein the water seal can is the water seal can according to any one of claims 1 to 3, wherein the lower part of the water seal can is located inside the container body, and the upper part of the water seal can is located outside the container body.

9. A container, comprising a container body and a water seal can, wherein the water seal can is the water seal can according to any one of claims 4 to 7, wherein the lower part of the water seal can is located inside the container body, and the upper part of the water seal can is located outside the container body.

10. The container according to claim 9, characterized in that The water seal tank is installed on the outer top wall of the container body through the partition.

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