Low-temperature residual liquid discharging device

Abstract

The utility model relates to the technical field of liquid discharging devices, in particular to a low-temperature residual liquid discharging device. According to the technical scheme, the device comprises a sleeve, a connecting pipe, a top cover, a buried barrel and an inner pipe, the top cover is arranged at the upper end of the buried barrel, the upper end of the top cover is communicated with the inner pipe, the outer wall of the inner pipe is sleeved with a sealing sleeve, the sleeve is installed on the outer wall of the sealing sleeve in a sliding mode, and an upper exhaust cover and a lower exhaust cover are arranged at the upper end of the sleeve; a heat exchange pipe is arranged in the buried barrel, connecting pipes distributed in an annular array are installed at the upper end of the top cover in a communicating mode, valve seats and valve rings are arranged on the inner walls of the connecting pipes, valve springs are arranged at the upper ends of the valve rings, and valve elements installed in the valve seats in an embedded mode are arranged at the upper ends of the valve springs. According to the utility model, the plurality of conveying pipelines and the connecting pipes are communicated into the buried barrel, and liquid is discharged through evaporation, so that the problems of suffocation, poisoning, frostbite and equipment damage accidents which are easily caused when people pass through an emptying port due to the fact that the discharge port is relatively dispersed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid discharging devices, in particular to a low-temperature residual liquid discharging device. Background Technique

[0002] At present, the air separation technology is already a relatively mature technology. Its specific process flow is as follows: the raw material air is filtered by an air filter and then enters an air compressor for compression. After the compressed air comes out, it first passes through a precooling unit and then enters a molecular sieve purifier. After purification, the pressurized air enters a main heat exchanger to further reduce the temperature, and then enters a turbine expander for expansion refrigeration to reduce the temperature of the raw material air. Then it directly enters a rectification tower for air separation. Product oxygen is led out from the lower part of the upper tower. The product oxygen enters an oxygen storage bag after passing through the main heat exchanger, and then the oxygen is filled into an oxygen cylinder through an oxygen compressor. During the operation of the air separation unit, it is necessary to discharge a small amount of low-temperature liquids, such as liquid nitrogen, liquid oxygen, etc. The temperature is generally about -180°C. The sources include the precooling of the low-temperature liquid pump, the precooling of the liquid pipeline, the discharge of unqualified waste liquid, the discharge of the safety valve of the low-temperature liquid device, etc. For this kind of small and discontinuous low-temperature liquid discharge, it generally converges from each discharge port to a low-temperature residual liquid treatment device.

[0003] When some used low-temperature pipelines and equipment such as filling pumps, vaporization pumps, storage tanks, and low-temperature liquid conveying pipelines are put into use, it is necessary to perform medium replacement purging and equipment precooling on the pipelines and equipment. Each pipeline and equipment will discharge to the air through multiple discharge ports. At present, the discharge ports are relatively scattered, and there are problems such as the passing route of personnel and the orientation of the venting port towards the equipment, which are likely to cause accidents such as suffocation, poisoning, frostbite of personnel and damage to equipment. Therefore, we propose a low-temperature residual liquid discharging device to solve the existing problems. Content of the Utility Model

[0004] The purpose of the utility model is to propose a low-temperature residual liquid discharging device for the problems existing in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a low-temperature residual liquid discharging device, including a sleeve, a connecting pipe, a top cover, a buried barrel, and an inner pipe. A top cover is arranged at the upper end of the buried barrel. The inner pipe is connected to the upper end of the top cover. A sealing sleeve is sleeved on the outer wall of the inner pipe. A sleeve is slidably installed on the outer wall of the sealing sleeve. An upper exhaust hood and a lower exhaust hood are arranged at the upper end of the sleeve. A heat exchange pipe is arranged inside the buried barrel. The upper end of the top cover is connected and installed with connecting pipes distributed in an annular array. A valve seat and a valve ring are arranged on the inner wall of the connecting pipe. A valve spring is arranged at the upper end of the valve ring. A valve core embedded and installed inside the valve seat is arranged at the upper end of the valve spring.

[0006] When using a low-temperature residual liquid drainage device in this solution, when the low-temperature pipeline and equipment filling pump, vaporization pump, storage tank, low-temperature liquid transportation pipeline, etc. are put into use, they are connected to the docking pipe. The transported medium acts on the valve core through pressurization. The valve core squeezes the valve spring, and the valve spring contracts under force, opening the valve seat. The pressure medium is transported into the buried barrel. The heat exchange pipe heats the inside of the buried barrel. Cobblestones are laid in the barrel to slow down the flow rate of the residual liquid and evaporate the medium input into the barrel. The evaporated medium is transported through the inner pipe and discharged to the outside through the channel between the upper exhaust hood and the lower exhaust hood;

[0007] When transporting the evaporated gas, grasp the rotating rod to drive the screw rod to rotate. Since the sleeve is slidably guided on the outer wall of the guide rod through the sliding sleeve, the screw rod pushes the nut to drive the sleeve to adjust the height. The evaporated gas is transported to a specified height and discharged into the high-altitude environment.

[0008] Preferably, a first flange is sleeved on the outer wall of the top cover, and a second flange is sleeved on the outer wall of the buried barrel. The first flange and the second flange are installed through bolts. The top cover and the buried barrel are docked through the first flange and the second flange, and the first flange and the second flange are installed and fixed through bolts.

[0009] Preferably, a heat insulation layer is sleeved on the outer wall of the buried barrel, and a third flange is arranged below the second flange. The third flange and the second flange are installed through bolts. By designing a heat insulation layer with heat preservation and insulation on the outer wall of the buried barrel, heat loss is reduced, the energy consumption of the heat exchange pipe is lowered, and the buried barrel is fixed to the third flange through bolts.

[0010] Preferably, the lower end of the third flange is provided with embedded rods distributed in an annular array, and the upper end outer wall of the connecting pipe is sleeved on the fourth flange. The embedded pipe is inserted into the foundation, and the buried pipe is fixed by pouring cement, thereby fixing the third flange. The connecting pipe is connected to the transportation pipeline through the fourth flange.

[0011] Preferably, the upper exhaust hood and the lower exhaust hood are in an umbrella shape, and fixing blocks are arranged in an annular array between the upper exhaust hood and the lower exhaust hood. The upper exhaust hood and the lower exhaust hood are connected through the fixing blocks, and the evaporated gas is discharged through the opening between the upper exhaust hood and the lower exhaust hood.

[0012] Preferably, a bearing seat is arranged at the upper end of the top cover, a screw rod is rotatably inserted into the bearing seat, and rotating rods are arranged in an annular array on the outer wall of the lower end of the screw rod. The screw rod is rotationally supported at the upper end of the top cover through the bearing seat, and it is convenient to apply a rotational force to the screw rod by grasping the rotating rod.

[0013] Preferably, a nut is sleeved on the outer wall of the screw rod, a connecting rod connected to the upper end of the sleeve is arranged at the upper end of the nut, and a limiting ring is arranged at the upper end of the screw rod. The limiting ring at the upper end of the screw rod limits the nut to prevent the lifted nut from completely disengaging from the screw rod.

[0014] Preferably, a guide rod is provided at the upper end of the top cover, and a sliding sleeve sleeved on the outer wall of the guide rod is provided on the outer wall of the sleeve. The sleeve slides on the outer wall of the guide rod through the sliding sleeve, thereby guiding the sliding of the sleeve.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By adjusting the connection of the same medium discharge pipes, the present utility model unifies and converges them into an underground barrel, and places the underground barrel according to the on-site situation.

[0017] By placing the underground barrel in a pit and laying cobblestones in the underground barrel, designing and connecting a heating pipe, the flow rate of the residual liquid is slowed down by the cobblestones, and the spreading area of the low-temperature residual liquid is increased. A heat exchange pipe is arranged inside the underground barrel, and the gas is heated by the heat exchange pipe to promote the evaporation of the low-temperature liquid, improving the discharge efficiency. An umbrella-shaped discharge structure is designed above the residual liquid discharge barrel to lead the vaporized residual liquid to a safe height for discharge, improving the discharge safety and ensuring the personal safety of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the main view three-dimensional structure schematic diagram of the present utility model;

[0019] Figure 2 is the three-dimensional structure schematic diagram of the underground barrel of the present utility model;

[0020] Figure 3 is the main view three-dimensional structure schematic diagram of the nut of the present utility model;

[0021] Figure 4 is the main view three-dimensional structure schematic diagram of the connecting pipe of the present utility model;

[0022] Figure 5 is the main view three-dimensional structure schematic diagram of the exhaust hood of the present utility model.

[0023] Reference numerals: 1. Sleeve; 2. Screw rod; 3. Connecting pipe; 4. Top cover; 5. Flange one; 6. Flange two; 7. Flange three; 8. Embedded rod; 9. Heat insulation layer; 10. Guide rod; 11. Upper exhaust hood; 12. Underground barrel; 13. Heat exchange pipe; 14. Lower exhaust hood; 15. Limit ring; 16. Connecting rod; 17. Flange four; 18. Valve seat; 19. Valve ring; 20. Valve spring; 21. Valve core; 22. Bearing seat; 23. Rotating rod; 24. Nut; 25. Sliding sleeve; 26. Inner pipe; 27. Sealing sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figures 1 - 5 shown, a low-temperature residual liquid drainage device proposed by the present invention includes a sleeve 1, a connecting pipe 3, a top cover 4, an underground barrel 12, and an inner pipe 26. A top cover 4 is provided at the upper end of the underground barrel 12. The upper end of the top cover 4 is connected to an inner pipe 26. A sealing sleeve 27 is sleeved on the outer wall of the inner pipe 26. A sleeve 1 is slidably installed on the outer wall of the sealing sleeve 27. An upper exhaust hood 11 and a lower exhaust hood 14 are provided at the upper end of the sleeve 1. A heat exchange pipe 13 is provided inside the underground barrel 12. The upper end of the top cover 4 is connected and installed with connecting pipes 3 distributed in an annular array. A valve seat 18 and a valve ring 19 are provided on the inner wall of the connecting pipe 3. A valve spring 20 is provided at the upper end of the valve ring 19. A valve core 21 embedded and installed inside the valve seat 18 is provided at the upper end of the valve spring 20;

[0026] A flange one 5 is sleeved on the outer wall of the top cover 4, and a flange two 6 is sleeved on the outer wall of the underground barrel. The flange one 5 and the flange two 6 are installed by bolts;

[0027] A flange three 7 is provided below the flange two 6. The flange three 7 and the flange two 6 are installed by bolts;

[0028] An annular array of embedded rods 8 is provided at the lower end of the flange three 7. The upper outer wall of the connecting pipe 3 is sleeved on the flange four 17;

[0029] The upper exhaust hood 11 and the lower exhaust hood 14 are in an umbrella shape, and fixing blocks distributed in an annular array are provided between the upper exhaust hood 11 and the lower exhaust hood 14;

[0030] Based on the implementation steps of Embodiment 1: The flange four 17 is installed outside the foundation pit of the installation frame. The underground barrel 12 is located in the foundation pit. Cement is poured into the embedded pipe to fix the embedded pipe. When the flange three 7 is docked with the flange two 6, the underground barrel 12 is fixed. The high-safety discharge pipe connection technology is adopted. By adjusting the connection of the same-medium discharge pipes, the number of adjacent same-medium discharge pipes and the residual liquid discharge amount are statistically calculated. The pipe diameter is designed and selected according to the calculated discharge amount and medium. And the pipe flow direction and connection method are adjusted according to the position and number of the discharge pipes to achieve the safe discharge of the residual liquid, reduce and prevent personal injury and equipment damage accidents. The internal one-way flow structure of the connecting pipe 3 is used to transport the liquid into the underground barrel 12, avoiding the discharge from multiple discharge ports of each device, and evaporating the input medium. Furthermore, through the umbrella-shaped discharge port formed between the upper exhaust hood 11 and the lower exhaust hood 14, it is discharged annularly into the environment.

[0031] As Figures 1 - 5 shown, compared with the first embodiment, a low-temperature residual liquid drainage device proposed by the present utility model further includes: a bearing seat 22 is provided at the upper end of the top cover 4, a screw rod 2 is rotatably inserted into the bearing seat 22, and spiral rods 23 are arranged on the outer wall of the lower end of the screw rod 2 in an annular array. A heat insulation layer 9 is sleeved on the outer wall of the buried barrel 12;

[0032] A nut 24 is sleeved on the outer wall of the screw rod 2, a connecting rod 16 connected to the upper end of the sleeve 1 is provided at the upper end of the nut 24, and a limit ring 15 is provided at the upper end of the screw rod 2;

[0033] A guide rod 10 is provided at the upper end of the top cover 4, and a sliding sleeve 25 slidably sleeved on the outer wall of the guide rod 10 is provided on the outer wall of the sleeve 1;

[0034] In this embodiment, a residual liquid safe and efficient discharge technology is adopted. By calculating the heat exchange ratio required for vaporization of residual liquid discharge according to the number of discharge pipes and the maximum discharge amount, the heat exchange capacity of the discharge barrel is designed. Pebbles are laid in the barrel. The flow rate of the residual liquid is slowed down by the pebbles, the spreading area of the low-temperature residual liquid is increased, and the discharge efficiency is improved. A layer of heat insulation material is designed outside the barrel to reduce heat loss, reduce the energy consumption of the heating pipe. At the same time, the height of the evaporation medium for discharge is adjustable, and the discharge height can be adjusted according to needs. At the same time, during transportation, the contracted sleeve 1 reduces the volume of the equipment and reduces the occupied space for transportation and storage.

[0035] The above specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A low-temperature residue drainage device, comprising a sleeve (1), a connecting pipe (3), a top cover (4), an underground barrel (12) and an inner pipe (26), characterized in that: A top cover (4) is provided at the upper end of the buried barrel (12). An inner pipe (26) is connected to the upper end of the top cover (4). A sealing sleeve (27) is sleeved on the outer wall of the inner pipe (26). A sleeve pipe (1) is slidably installed on the outer wall of the sealing sleeve (27). An upper exhaust hood (11) and a lower exhaust hood (14) are provided at the upper end of the sleeve pipe (1). A heat exchange pipe (13) is arranged inside the buried barrel (12). A connecting pipe (3) distributed in an annular array is connected and installed at the upper end of the top cover (4). A valve seat (18) and a valve ring (19) are arranged on the inner wall of the connecting pipe (3). A valve spring (20) is arranged at the upper end of the valve ring (19). A valve core (21) embedded and installed inside the valve seat (18) is arranged at the upper end of the valve spring (20).

2. The low-temperature residual liquid drainage device according to claim 1, characterized in that: A first flange (5) is sleeved on the outer wall of the top cover (4). A second flange (6) is sleeved on the outer wall of the buried barrel. The first flange (5) and the second flange (6) are installed by bolts.

3. The low-temperature residue liquid drainage device according to claim 2, wherein: A heat insulation layer (9) is sleeved on the outer wall of the buried barrel (12). A third flange (7) is arranged below the second flange (6). The third flange (7) and the second flange (6) are installed by bolts.

4. The low-temperature residue liquid draining device according to claim 3, characterized in that: A plurality of embedded rods (8) distributed in an annular array are arranged at the lower end of the third flange (7). The upper outer wall of the connecting pipe (3) is sleeved on a fourth flange (17).

5. The low-temperature residue drainage device according to claim 1, characterized in that: The upper exhaust hood (11) and the lower exhaust hood (14) are in an umbrella shape, and fixing blocks distributed in an annular array are arranged between the upper exhaust hood (11) and the lower exhaust hood (14).

6. The low-temperature residue liquid draining device according to claim 1, wherein: A bearing seat (22) is arranged at the upper end of the top cover (4). A screw rod (2) is rotatably inserted into the bearing seat (22). A plurality of rotating rods (23) distributed in an annular array are arranged on the outer wall of the lower end of the screw rod (2).

7. The low-temperature residue liquid drainage device according to claim 6, characterized in that: A nut (24) is sleeved on the outer wall of the screw rod (2). A connecting rod (16) connected to the upper end of the sleeve pipe (1) is arranged at the upper end of the nut (24). A limiting ring (15) is arranged at the upper end of the screw rod (2).

8. The low-temperature residue liquid draining device according to claim 1, wherein: A guide rod (10) is arranged at the upper end of the top cover (4). A sliding sleeve (25) slidably sleeved on the outer wall of the guide rod (10) is arranged on the outer wall of the sleeve pipe (1).

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