Heat exchange pool for low-temperature liquid

Abstract

The utility model relates to the technical field of low-temperature liquid heat exchange pools, and discloses a low-temperature liquid heat exchange pool which comprises a heat exchange pool body, the lower end of the heat exchange pool body is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a driving shaft, and the upper end of the driving shaft is fixedly connected with a driving belt pulley. The driving belt pulley is connected with a driven belt pulley through a transmission belt; stirring mechanisms are arranged on the driving shaft and the driven belt pulley; the stirring mechanism comprises a connecting shell, a driving bevel gear is arranged in the connecting shell, and the driving bevel gear is meshed with a driven bevel gear. According to the utility model, the driving motor drives the stirring blades to stir water in the heat exchange tank body through multi-component transmission, so that a stagnation layer of liquid in the heat exchange pipe can be broken more effectively, heat is promoted to be transferred to the whole liquid from the coil pipe, the uniform distribution of water temperature of the heat exchange tank body is facilitated, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic liquid heat exchange pools, and particularly relates to a cryogenic liquid heat exchange pool. Background Technique

[0002] When producing nitrogen by cryogenic double-column air separation, due to its significant advantages of high nitrogen extraction rate and low unit energy consumption, it has been widely used in industrial production in recent years. During the actual operation process, it often faces the challenge of slightly excessive refrigerating capacity of the expander. When this phenomenon occurs, the liquid level at the top of the upper column will exceed the preset safety threshold, and then trigger the automatic or manual liquid discharge mechanism. The discharged cryogenic liquid is then guided into the residual liquid evaporator through a special pipeline. Through the action of the evaporator, the cryogenic liquid is converted into gas and discharged into the atmosphere.

[0003] However, these cryogenic liquids are directly guided into the residual liquid evaporator, and the cold energy carried by the cryogenic liquids is also directly dissipated into the environment, resulting in significant energy waste. Therefore, a cryogenic liquid heat exchange pool is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and a cryogenic liquid heat exchange pool is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a cryogenic liquid heat exchange pool, including a heat exchange pool body, a driving motor is fixedly connected to the lower end of the heat exchange pool body, a driving shaft is fixedly connected to the output end of the driving motor, a driving pulley is fixedly connected to the upper end of the driving shaft, the driving pulley is connected to a driven pulley through a transmission belt, and stirring mechanisms are arranged on both the driving shaft and the driven pulley;

[0006] The stirring mechanism includes a connecting shell, a driving bevel gear is arranged inside the connecting shell, the driving bevel gear meshes with a driven bevel gear, the driven bevel gear is fixedly connected to a stirring shaft, and stirring blades are arranged on the stirring shaft.

[0007] As a further description of the above technical scheme: a heat exchange tube is arranged inside the heat exchange pool body, a liquid inlet is arranged at the input end of the heat exchange tube, a liquid outlet tube is arranged at the output end of the heat exchange tube, and both the liquid inlet and the liquid outlet tube penetrate through the heat exchange pool body.

[0008] As a further description of the above technical scheme: an evaporator is arranged at one end of the liquid outlet tube away from the heat exchange tube, and a discharge tube is arranged on the evaporator.

[0009] As a further description of the above technical scheme: both the driving shaft and the driven pulley are rotatably connected to the heat exchange pool body.

[0010] As a further description of the above technical solution: the drive shaft and the driven pulley are respectively rotatably connected to the corresponding connecting shells thereon, the drive shaft and the driven pulley are respectively fixedly connected to the corresponding driving bevel gears thereon, and the stirring shaft is rotatably connected to the connecting shell.

[0011] As a further description of the above technical solution: several groups of the stirring blades are provided, and the lengths of the stirring blades are different.

[0012] As a further description of the above technical solution: the driven bevel gears are symmetrically arranged below the driving bevel gears, and the driven bevel gears are arranged inside the connecting shell.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the drive motor driving through multiple components, finally the stirring blades are driven to stir the water inside the heat exchange pool body, which can more effectively break the stagnant layer of the liquid in the heat exchange tubes, promote the heat transfer from the coil pipes to the whole liquid, is beneficial to the uniform distribution of the water temperature in the heat exchange pool body, and improves the heat exchange efficiency.

[0015] 2. In the utility model, the cold quantity of the low-temperature liquid is recycled through the heat exchange tubes, avoiding the direct waste of the cold quantity, and helping to improve the energy utilization efficiency. Description of the Drawings

[0016] Figure 1 is a schematic three-dimensional structure diagram of a heat exchange pool for low-temperature liquid proposed by the utility model;

[0017] Figure 2 is a partial structural cross-section of a heat exchange pool for low-temperature liquid proposed by the utility model Figure 1 ;

[0018] Figure 3 is a partial structural cross-section of a heat exchange pool for low-temperature liquid proposed by the utility model Figure 2 。

[0019] Legend Explanation:

[0020] 1. Heat exchange pool body; 2. Drive motor; 3. Drive shaft; 4. Driving pulley; 5. Transmission belt; 6. Driven pulley; 7. Driven shaft; 8. Stirring mechanism; 801. Connecting shell; 802. Driving bevel gear; 803. Driven bevel gear; 804. Stirring shaft; 805. Stirring blade; 9. Liquid inlet; 10. Liquid outlet pipe; 11. Evaporator; 12. Discharge pipe; 13. Heat exchange tube. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Referring to Figures 1 - 3 As shown, a heat exchange pool for cryogenic liquids includes a heat exchange pool body 1. A driving motor 2 is fixedly connected to the lower end of the heat exchange pool body 1. The output end of the driving motor 2 is fixedly connected to a driving shaft 3. The upper end of the driving shaft 3 is fixedly connected to a driving pulley 4. The driving pulley 4 is connected to a driven pulley 6 through a transmission belt 5. Stirring mechanisms 8 are arranged on both the driving shaft 3 and the driven pulley 6;

[0024] The stirring mechanism 8 includes a connecting shell 801. An active bevel gear 802 is arranged inside the connecting shell 801. The active bevel gear 802 meshes with a driven bevel gear 803. The driven bevel gear 803 is fixedly connected to a stirring shaft 804. Stirring blades 805 are arranged on the stirring shaft 804. Through the multi-component transmission of the driving motor 2, the stirring blades 805 are finally driven to stir the water inside the heat exchange pool body 1, which can more effectively break the stagnant layer of the liquid in the heat exchange tube 13, promote the transfer of heat from the coil to the whole liquid, is beneficial to the uniform distribution of the water temperature in the heat exchange pool body 1, and improves the heat exchange efficiency.

[0025] Both the driving shaft 3 and the driven pulley 6 are rotatably connected to the heat exchange pool body 1. The driving shaft 3 and the driven pulley 6 are respectively rotatably connected to the corresponding connecting shells 801 thereon. The driving shaft 3 and the driven pulley 6 are respectively fixedly connected to the corresponding active bevel gears 802 thereon. The stirring shaft 804 is rotatably connected to the connecting shell 801. A plurality of groups of stirring blades 805 are arranged. The lengths of the stirring blades 805 are different. According to the actual situation, the lengths of the stirring blades 805 can be adjusted so that they neither contact the heat exchange pool body 1 nor touch the heat exchange tube 13. The driven bevel gears 803 are symmetrically arranged below the active bevel gear 802, and the driven bevel gears 803 are arranged inside the connecting shell 801.

[0026] Embodiment 2

[0027] On the basis of Embodiment 1, a heat exchange tube 13 is arranged inside the heat exchange pool body 1. The evaporator 11 is a prior art and is used as it is. An inlet 9 is arranged at the input end of the heat exchange tube 13, and an outlet pipe 10 is arranged at the output end of the heat exchange tube 13. Both the inlet 9 and the outlet pipe 10 penetrate through the heat exchange pool body 1. The cold quantity of the low-temperature liquid is recycled through the heat exchange tube 13, avoiding direct waste of cold quantity and helping to improve the energy utilization efficiency.

[0028] One end of the outlet pipe 10 away from the heat exchange tube 13 is provided with an evaporator 11. The evaporator 11 is a prior art and is used as it is. Its internal structure and working principle are not described. A discharge pipe 12 is arranged on the evaporator 11.

[0029] Working principle: First, the staff starts the drive motor 2. The drive motor 2 drives the drive shaft 3 to rotate. The drive shaft 3 drives the driving pulley 4 to rotate. The driving pulley 4 drives the driven pulley 6 to rotate through the transmission belt 5. The drive shaft 3 and the driven pulley 6 respectively drive the driving bevel gears 802 thereon to rotate. The driving bevel gear 802 drives the driven bevel gear 803 to rotate. The driven bevel gear 803 drives the stirring shaft 804 to rotate. The stirring shaft 804 drives the stirring blades 805 of different lengths thereon to rotate. Thus, the water inside the heat exchange pool body 1 is stirred, making the water temperature in the heat exchange pool body 1 more uniform when the low-temperature liquid in the heat exchange tube 13 exchanges heat with the water in the heat exchange pool body 1 and making the heat exchange effect better. Then, the low-temperature liquid in the air separation deep cold double towers for nitrogen production is introduced into the heat exchange tube 13 through the inlet 9, then enters the evaporator 11 through the outlet pipe 10, and is evaporated by the evaporator 11 and discharged into the air through the discharge pipe 12, changing the problem that the low-temperature liquid in the original air separation deep cold double towers for nitrogen production is directly vaporized by the evaporator 11 and discharged into the air, resulting in cold quantity loss.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat exchange pool for cryogenic liquids, comprising a heat exchange pool body (1), characterized in that: A driving motor (2) is fixedly connected to the lower end of the heat exchange tank body (1). The output end of the driving motor (2) is fixedly connected to a driving shaft (3). The upper end of the driving shaft (3) is fixedly connected to a driving pulley (4). The driving pulley (4) is connected to a driven pulley (6) through a transmission belt (5). Stirring mechanisms (8) are arranged on both the driving shaft (3) and the driven pulley (6). The stirring mechanism (8) includes a connecting shell (801). An active bevel gear (802) is arranged inside the connecting shell (801). The active bevel gear (802) meshes with a driven bevel gear (803). The driven bevel gear (803) is fixedly connected to a stirring shaft (804). Stirring blades (805) are arranged on the stirring shaft (804).

2. The cryogenic liquid heat exchange pool according to claim 1, wherein: A heat exchange tube (13) is arranged inside the heat exchange tank body (1). An inlet (9) is arranged at the input end of the heat exchange tube (13). An outlet pipe (10) is arranged at the output end of the heat exchange tube (13). Both the inlet (9) and the outlet pipe (10) penetrate through the heat exchange tank body (1).

3. The cryogenic liquid heat exchange pool according to claim 2, characterized in that: An evaporator (11) is arranged at one end of the outlet pipe (10) far away from the heat exchange tube (13). A discharge pipe (12) is arranged on the evaporator (11).

4. A cryogenic liquid heat exchange pool according to claim 1, characterized in that: Both the driving shaft (3) and the driven pulley (6) are rotatably connected to the heat exchange tank body (1).

5. A cryogenic liquid heat exchange pool according to claim 1, characterized in that: The driving shaft (3) and the driven pulley (6) are respectively rotatably connected to the corresponding connecting shells (801) thereon. The driving shaft (3) and the driven pulley (6) are respectively fixedly connected to the corresponding active bevel gears (802) thereon. The stirring shaft (804) is rotatably connected to the connecting shell (801).

6. A cryogenic liquid heat exchange pool according to claim 1, characterized in that: A plurality of groups of stirring blades (805) are arranged. The lengths of the stirring blades (805) are different.

7. A cryogenic liquid heat exchange pool according to claim 1, characterized in that: The driven bevel gears (803) are symmetrically arranged below the active bevel gear (802), and the driven bevel gears (803) are arranged inside the connecting shell (801).

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