Gas condenser

Abstract

The utility model provides a gas condenser, which belongs to the technical field of condensers and comprises a condenser inner cylinder, an outer sleeve, an inner tube nest and an inner guide plate. The condenser inner cylinder is located at the top of the fermentation tank, an air outlet is formed in the top of the condenser inner cylinder, and an air inlet is formed in the bottom of the condenser inner cylinder; the outer sleeve is arranged in the circumferential direction of the condenser inner cylinder in a sleeving mode, a cooling cavity is formed between the outer sleeve and the condenser inner cylinder, a refrigerant inlet pipe is arranged at the bottom of the cooling cavity, and a refrigerant outlet pipe is arranged at the top of the cooling cavity; the inner tube nest is located in the condenser inner cylinder, the upper end of the inner tube nest communicates with the upper portion of the cooling cavity, and the lower end of the inner tube nest communicates with the lower portion of the cooling cavity. The inner guide plate is spirally connected to the inner tube nests from bottom to top; and a blanking gap is formed between the inner guide plate and the inner wall of the condenser inner cylinder. According to the gas condenser provided by the utility model, the heat exchange area of humid and hot tail gas of a fermentation tank can be increased, and meanwhile, the heat exchange efficiency of the humid and hot tail gas of the fermentation tank can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of condensers, and more specifically relates to a gas condenser. Background Art

[0002] The biological fermentation system is generally composed of stainless steel fermentation tank equipment, air intake system, exhaust system, circulating temperature control system, feeding system, etc. In order to ensure that the fermentation liquid is highly ventilated and reduce the loss of fermentation liquid volatilization; at the same time, it is also necessary to control the particulate matter in the culture medium from clogging the sterilization filter at the rear end, so there must be an efficient condenser to condense the hot and humid exhaust gas discharged upward from the fermentation tank into a liquid state and return it to the fermentation tank along the inner wall of the condenser.

[0003] There are two main types of conventionally designed condensers in fermentation systems: one is a shell-and-tube condenser, and the other is a single-row tube heat exchanger.

[0004] The shell-and-tube condenser is an inner tube with a large outer tube welded to the outside. A sandwich is formed between the tubes to form a refrigerant channel. Disadvantages of the shell-and-tube condenser: The refrigerant and wet air are only on the surface of the inner tube of the shell, the heat exchange effect is poor, and the heat transfer area is too small, so the overall condensation effect is poor.

[0005] The single-tube condenser (i.e., shell and tube heat exchanger) is composed of a large pipe with multiple or even dozens of small tubes inside. The refrigerant passes through the interlayer formed by the inside of the large pipe and the outside of the small tubes. When the hot and humid exhaust gas passes through the inside of the small tubes, it is condensed and refluxed to the fermentation tank. Disadvantages of the tube-and-tube condenser: it only increases the heat exchange area, but the heat exchange efficiency of the single tube is not improved. Utility Model Content

[0006] The utility model aims to provide a gas condenser, which can increase the heat exchange area of ​​the moist and hot tail gas of the fermentation tank and improve the heat exchange efficiency of the moist and hot tail gas of the fermentation tank.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a gas condenser, comprising:

[0008] A condenser inner cylinder, wherein the condenser inner cylinder is located at the top of the fermentation tank, the top of the condenser inner cylinder is provided with an air outlet, and the bottom of the condenser inner cylinder is provided with an air inlet;

[0009] An outer sleeve, the outer sleeve is sleeved on the circumference of the condenser inner tube, a cooling chamber is formed between the outer sleeve and the condenser inner tube, a refrigerant inlet pipe is arranged at the bottom of the cooling chamber, and a refrigerant outlet pipe is arranged at the top of the cooling chamber;

[0010] Inner tubes, the inner tubes are located in the inner tube of the condenser, the upper ends of the inner tubes are connected to the upper part of the cooling chamber, and the lower ends of the inner tubes are connected to the lower part of the cooling chamber;

[0011] The inner guide plate is spirally connected to the inner tube array from bottom to top, and a material drop gap is formed between the inner guide plate and the inner wall of the condenser inner tube.

[0012] In a possible implementation, there are multiple inner tubes, which are longitudinally arranged and connected end to end in sequence to form a tube group, and the inner guide plate is spirally connected to the tube group from bottom to top, the upper end outlet of the tube group is connected to the upper part of the cooling chamber, and the lower end inlet of the tube group is connected to the lower part of the cooling chamber.

[0013] In a possible implementation, the upper ends or lower ends of the two inner tube arrays connected end to end are provided with an arc-shaped connecting pipe, an upper outlet pipe is horizontally arranged at the upper end outlet of the tube array group, and the upper outlet pipe is connected to the upper part of the cooling chamber, and a lower inlet pipe is horizontally arranged at the lower end inlet of the tube array group, and the lower inlet pipe is connected to the lower part of the cooling chamber.

[0014] In a possible implementation, a first arc-shaped transition pipe is provided between the upper outlet of the tube array and the upper outlet pipe, and a second arc-shaped transition pipe is provided between the lower inlet of the tube array and the lower inlet pipe.

[0015] In a possible implementation, the upper outlet pipe is coaxially arranged with the refrigerant outlet pipe, and the lower inlet pipe is coaxially arranged with the refrigerant inlet pipe.

[0016] In a possible implementation, the height of the inner tube row is smaller than the height of the cooling chamber.

[0017] In a possible implementation, the inner guide plate is connected to the middle of the inner tube array, and the height of the inner guide plate is greater than half of the height of the inner tube array.

[0018] In a possible implementation, an outer guide plate is provided in the cooling chamber, and the outer guide plate guides the refrigerant in the cooling chamber to rise in a spiral from bottom to top or to rise in a reciprocating manner.

[0019] In a possible implementation, the outer sleeve is fixed to the condenser inner tube by welding, and the inner guide plate is fixed to the inner tube array by welding.

[0020] In a possible implementation, the upper end and the lower end of the condenser inner cylinder are both provided with connecting flanges.

[0021] The beneficial effect of a gas condenser provided by the utility model is that: compared with the prior art, the refrigerant enters the cooling chamber through the refrigerant inlet pipe, and is discharged from the cooling chamber through the refrigerant outlet pipe. The refrigerant enters the inner tube from the lower part of the cooling chamber, and the refrigerant passes through the inner tube from bottom to top and enters the upper part of the cooling chamber. The refrigerant forms an external cooling channel from bottom to top in the cooling chamber, and at the same time, the refrigerant forms an internal cooling channel from bottom to top inside the inner tube. The hot and humid exhaust gas discharged upward from the fermentation tank enters from the air inlet of the condenser inner tube and is discharged from the air outlet of the condenser inner tube. In the process of the hot and humid exhaust gas passing through the condenser inner tube, the hot and humid exhaust gas collides with the outer wall of the inner tube under the guidance of the inner guide plate to cool down, thereby improving the tumbling ability of the hot and humid exhaust gas. In addition, the hot and humid exhaust gas forms centrifugal force under the guidance of the inner guide plate. Under the action of the centrifugal force, the hot and humid exhaust gas and the mixed culture medium solids collide with the inner wall of the condenser inner tube to cool down. The hot and humid exhaust gas forms condensate with the culture medium solids, and flows back to the fermentation tank along the inner wall of the condenser inner tube and the blanking gap between the inner guide plate. The gas condenser provided by the utility model can increase the heat exchange area of ​​the hot and humid exhaust gas of the fermentation tank, and at the same time can improve the heat exchange efficiency of the hot and humid exhaust gas of the fermentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the refrigerant flow in a gas condenser provided by the utility model;

[0024] Figure 2 The utility model provides a structural schematic diagram of the tail gas flow in a gas condenser.

[0025] Description of reference numerals:

[0026] 100, condenser inner tube; 110, air inlet; 120, air outlet; 130, connecting flange; 200, outer sleeve; 210, refrigerant inlet pipe; 220, refrigerant outlet pipe; 230, outer guide plate; 300, inner tube array; 310, arc-shaped connecting pipe; 320, lower inlet pipe; 330, upper outlet pipe; 340, first arc-shaped transition pipe; 350, second arc-shaped transition pipe; 400, inner guide plate. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0029] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0030] See also Figure 1 and Figure 2 Now, a gas condenser provided by the utility model is described. A gas condenser comprises a condenser inner cylinder 100, an outer sleeve 200, an inner tube array 300 and an inner guide plate 400.

[0031] The condenser inner tube 100 is located at the top of the fermentation tank, the top of the condenser inner tube 100 is provided with an air outlet 120, and the bottom of the condenser inner tube 100 is provided with an air inlet 110; the outer sleeve 200 is sleeved on the circumference of the condenser inner tube 100, and a cooling chamber is formed between the outer sleeve 200 and the condenser inner tube 100, the bottom of the cooling chamber is provided with a refrigerant inlet pipe 210, and the top of the cooling chamber is provided with a refrigerant outlet pipe 220; the inner tube 300 is located in the condenser inner tube 100, the upper end of the inner tube 300 is connected to the upper part of the cooling chamber, and the lower end of the inner tube 300 is connected to the lower part of the cooling chamber; the inner guide plate 400 is spirally connected to the inner tube 300 from bottom to top, and a blanking gap is formed between the inner guide plate 400 and the inner wall of the condenser inner tube 100.

[0032] The utility model provides a gas condenser. Compared with the prior art, the refrigerant enters the cooling chamber through the refrigerant inlet pipe 210, and is discharged from the cooling chamber through the refrigerant outlet pipe 220. The refrigerant enters the inner tube 300 from the lower part of the cooling chamber, and the refrigerant passes through the inner tube 300 from the bottom to the top and enters the upper part of the cooling chamber. The refrigerant forms an external cooling channel from the bottom to the top in the cooling chamber, and the refrigerant forms an internal cooling channel from the bottom to the top inside the inner tube 300. The hot and humid tail gas discharged upward from the fermentation tank enters from the air inlet 110 of the condenser inner tube 100 and is discharged from the air outlet 120 of the condenser inner tube 100. In the process of the hot and humid tail gas passing through the condenser inner tube 100, the hot and humid tail gas collides with the outer wall of the inner tube 300 under the guidance of the inner guide plate 400 to cool down, thereby improving the tumbling ability of the hot and humid tail gas. In addition, the hot and humid exhaust gas forms centrifugal force under the guidance of the inner guide plate 400. Under the action of the centrifugal force, the hot and humid exhaust gas and the mixed culture medium solids collide with the inner wall of the condenser inner tube 100 to cool down. The hot and humid exhaust gas forms condensate with the culture medium solids, and flows back to the fermenter along the blanking gap between the inner wall of the condenser inner tube 100 and the inner guide plate 400. The gas condenser provided by the utility model can increase the heat exchange area of ​​the hot and humid exhaust gas of the fermenter, and at the same time can improve the heat exchange efficiency of the hot and humid exhaust gas of the fermenter.

[0033] See also Figure 1 to Figure 2 The number of the inner tubes 300 is multiple, and the multiple inner tubes 300 are longitudinally arranged and connected end to end in sequence to form a tube group. The inner guide plate 400 is spirally connected to the tube group from bottom to top. The upper end outlet of the tube group is connected to the upper part of the cooling chamber, and the lower end inlet of the tube group is connected to the lower part of the cooling chamber. The multiple inner tubes 300 can increase the heat exchange area when the hot and humid exhaust gas passes through, thereby improving the heat exchange effect.

[0034] The upper or lower ends of the two inner tubes 300 connected end to end are provided with arc-shaped connecting pipes 310, which ensure that when the refrigerant passes through the two inner tubes 300 connected to each other, there will be no violent disturbance of the refrigerant airflow or refrigerant liquid flow, thereby ensuring the cooling effect of the inner tubes 300. An upper outlet pipe 330 is horizontally arranged at the upper outlet of the tube array, and the upper outlet pipe 330 is connected to the upper part of the cooling chamber. A lower inlet pipe 320 is horizontally arranged at the lower inlet of the tube array, and the lower inlet pipe 320 is connected to the lower part of the cooling chamber.

[0035] In addition, a first arc-shaped transition pipe 340 is provided between the upper outlet of the tube array and the upper outlet pipe 330, and a second arc-shaped transition pipe 350 is provided between the lower inlet of the tube array and the lower inlet pipe 320. Similarly, the first arc-shaped transition pipe 340 and the second arc-shaped transition pipe 350 are provided to reduce the disturbance of the refrigerant at the inlet or outlet of the tube array.

[0036] Please refer to the figure, the upper outlet pipe 330 is coaxially arranged with the refrigerant outlet pipe 220, and the lower inlet pipe 320 is coaxially arranged with the refrigerant inlet pipe 210. The refrigerant entering the cooling chamber through the refrigerant inlet pipe 210 can smoothly enter the inner tube array 300 through the lower inlet pipe 320. Similarly, the refrigerant in the inner tube array 300 can also be smoothly discharged from the refrigerant outlet after entering the cooling chamber from the upper outlet pipe 330.

[0037] Specifically, the height of the inner tubes 300 is less than the height of the cooling chamber. The area where the inner tubes 300 are located inside the condenser inner tube 100 is the core heat exchange area of ​​the condenser. The hot and humid exhaust gas discharged from the fermentation tank can be subjected to dual heat conduction from the inner tubes 300 and the cooling chamber in this area, thereby achieving the best heat exchange effect.

[0038] Preferably, the inner guide plate 400 is connected to the middle of the inner tube array 300, and the height of the inner guide plate 400 is greater than half the height of the inner tube array 300, ensuring that most of the middle area of ​​the inner tube array 300 can perform good heat exchange with the humid and hot exhaust gas.

[0039] An outer guide plate 230 is provided in the cooling chamber, and the outer guide plate 230 guides the refrigerant in the cooling chamber to spiral upward or reciprocate upward from bottom to top, so that the refrigerant can flow through all areas of the cooling chamber to ensure the cooling effect of the cooling chamber on the humid and hot exhaust gas.

[0040] Preferably, the outer sleeve 200 is fixed to the condenser inner tube 100 by welding, and the inner guide plate 400 is fixed to the inner tube array 300 by welding, so as to ensure the overall structural strength and sealing of the gas condenser.

[0041] In addition, the upper and lower ends of the condenser inner tube 100 are both provided with connection flanges 130. The connection flange 130 at the upper end of the condenser inner tube 100 can be connected to an external pipeline to guide the exhaust gas after cooling to a designated area for discharge, and the connection flange 130 at the lower end of the condenser inner tube 100 can be directly connected to the top of the fermentation tank to ensure that all the hot and humid exhaust gas generated by the fermentation tank passes through the condenser inner tube 100.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas condenser, characterized in that: include: A condenser inner cylinder (100), wherein the condenser inner cylinder (100) is located at the top of the fermentation tank, the top of the condenser inner cylinder (100) is provided with an air outlet (120), and the bottom of the condenser inner cylinder (100) is provided with an air inlet (110); An outer sleeve (200), the outer sleeve (200) being sleeved on the circumference of the condenser inner tube (100), a cooling chamber being formed between the outer sleeve (200) and the condenser inner tube (100), a refrigerant inlet pipe (210) being provided at the bottom of the cooling chamber, and a refrigerant outlet pipe (220) being provided at the top of the cooling chamber; Inner tubes (300), the inner tubes (300) are located in the condenser inner tube (100), the upper ends of the inner tubes (300) are connected to the upper part of the cooling chamber, and the lower ends of the inner tubes (300) are connected to the lower part of the cooling chamber; An inner guide plate (400) is spirally connected to the inner tube array (300) from bottom to top, and a blanking gap is formed between the inner guide plate (400) and the inner wall of the condenser inner cylinder (100).

2. A gas condenser according to claim 1, characterized in that: The number of the inner tubes (300) is multiple, and the multiple inner tubes (300) are longitudinally arranged and connected end to end in sequence to form a tube group. The inner guide plate (400) is spirally connected to the tube group from bottom to top, and the upper end outlet of the tube group is connected to the upper part of the cooling chamber, and the lower end inlet of the tube group is connected to the lower part of the cooling chamber.

3. A gas condenser as claimed in claim 2, characterized in that: The upper ends or lower ends of the two inner tube arrays (300) connected end to end are provided with arc-shaped connecting pipes (310); an upper outlet pipe (330) is horizontally arranged at the upper outlet of the tube array group, and the upper outlet pipe (330) is connected to the upper part of the cooling chamber; a lower inlet pipe (320) is horizontally arranged at the lower inlet of the tube array group, and the lower inlet pipe (320) is connected to the lower part of the cooling chamber.

4. A gas condenser as claimed in claim 3, characterized in that: A first arc-shaped transition pipe (340) is arranged between the upper outlet of the tube array and the upper outlet pipe (330), and a second arc-shaped transition pipe (350) is arranged between the lower inlet of the tube array and the lower inlet pipe (320).

5. A gas condenser as claimed in claim 3, characterized in that: The upper outlet pipe (330) is coaxially arranged with the refrigerant outlet pipe (220), and the lower inlet pipe (320) is coaxially arranged with the refrigerant inlet pipe (210).

6. A gas condenser according to claim 1, characterized in that: The height of the inner tube row (300) is smaller than the height of the cooling chamber.

7. A gas condenser according to claim 1, characterized in that: The inner guide plate (400) is connected to the middle of the inner tube row (300), and the height of the inner guide plate (400) is greater than half the height of the inner tube row (300).

8. A gas condenser according to claim 1, characterized in that: An outer guide plate (230) is arranged in the cooling chamber, and the outer guide plate (230) guides the refrigerant in the cooling chamber to rise in a spiral from bottom to top or to rise in a reciprocating manner.

9. A gas condenser according to claim 1, characterized in that: The outer sleeve (200) is fixedly welded to the condenser inner tube (100), and the inner guide plate (400) is fixedly welded to the inner tube array (300).

10. A gas condenser according to claim 1, characterized in that: The upper end and the lower end of the condenser inner cylinder (100) are both provided with connection flanges (130).

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