Gas-liquid separation device for flooded evaporator

Abstract

The utility model provides a gas-liquid separation device for a flooded evaporator, which comprises a flooded evaporator shell, and the top of the flooded evaporator shell is connected with the bottom of a gas-liquid separation cylinder through an ascending pipe; a gas-liquid separation device is arranged in the gas-liquid separation cylinder; the gas-liquid separation device is fixed on the inner side walls of the separation baffles on the left side and the right side of the gas-liquid separation cylinder; the gas-liquid separation device is connected with the inner wall of the gas-liquid separation cylinder; the gas-liquid separation device is provided with a bottom plate; the bottom plate is connected with an upper baffle through a front baffle and a side baffle to form a demister; and the bottom plate and the demister module are correspondingly provided with square air inlet holes. According to the utility model, the gas-liquid separation device is arranged above the shell of the flooded evaporator to filter the refrigerant gas, and the gas-liquid separation device can block the refrigerant with small liquid drops which are not separated in the gas-liquid separation cylinder, so that the discharged refrigerant gas does not contain the refrigerant liquid drops, and a better gas-liquid separation effect is achieved; and normal operation of the system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation in a refrigeration system, in particular to a gas-liquid separation device for a full-liquid evaporator. Background Art

[0002] The existing full-liquid evaporator controls the rising speed of the gas-liquid two-phase working medium evaporating in the shell by designing, calculating and arranging baffles, so that the thrust of the rising airflow is less than the gravity of the liquid droplets themselves, and the liquid droplets fall back to the liquid phase area by their own gravity, thereby completing the gas-liquid separation;

[0003] However, due to the changes in operating conditions in different seasons, the floating of the liquid level in the shell and other complex factors, the liquid separation effect fluctuates. Some unseparated refrigerant droplets are directly sucked into the compressor along with the refrigerant gas, resulting in air-carrying liquid. The liquid carried enters the compressor at a high speed, which will damage the compressor. In severe cases, it will affect the service life of the compressor. Utility Model Content

[0004] The utility model provides a gas-liquid separation device for a fully liquid evaporator, which solves the problem that when the gas-liquid is separated in the existing fully liquid evaporator, the liquid separation effect fluctuates due to complex factors such as the floating of the liquid level in the shell, and unseparated refrigerant droplets are directly sucked into the compressor along with the refrigerant gas, causing damage to the compressor and affecting the service life of the compressor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A gas-liquid separation device for a liquid-filled evaporator, comprising a liquid-filled evaporator shell, the top of the liquid-filled evaporator shell being connected to the bottom of a gas-liquid separation cylinder through a riser; a gas-liquid separation device is arranged inside the gas-liquid separation cylinder; the gas-liquid separation device is fixed to the inner side walls of separation baffles on the left and right sides of the gas-liquid separation cylinder; the gas-liquid separation device is connected to the inner wall of the gas-liquid separation cylinder;

[0007] The gas-liquid separation device consists of a bottom plate, a front baffle, a side baffle, an upper baffle and a demister. After the front baffle, the side baffle and the upper baffle are connected, the demister is fixed to the bottom plate; a plurality of demister blocks are arranged on the bottom plate; and square air inlet holes are correspondingly arranged on the bottom plate and the demister blocks.

[0008] Furthermore, a heat exchange tube is provided inside the full liquid evaporator shell; a base is provided at the bottom of the full liquid evaporator shell; a plurality of refrigerant inlets are provided at the bottom end of the full liquid evaporator shell; the left and right sides of the full liquid evaporator shell are connected to the full liquid evaporator tube pass through a flange; a coolant inlet is provided at the top of one end of the full liquid evaporator tube pass; a coolant outlet is provided at the bottom of one end of the full liquid evaporator tube pass; a refrigerant outlet is provided in the middle of the top of the gas-liquid separation cylinder.

[0009] Furthermore, a plurality of riser pipes are provided between the full liquid evaporator shell and the gas-liquid separation cylinder.

[0010] Furthermore, the gas-liquid separation device forms a relatively closed gas buffer filtration space in the lower part of the gas-liquid separation cylinder.

[0011] Furthermore, the upper baffle is a fishing net-shaped steel wire plate.

[0012] Furthermore, the demister is a stainless steel wire mesh.

[0013] The beneficial effects of the utility model are:

[0014] The utility model filters the refrigerant gas by arranging a gas-liquid separation device above the full liquid evaporator shell, discharges the gas through filtering, and returns the liquid to the full liquid evaporator shell after filtering; the gas-liquid separation device can block the unseparated small droplets of refrigerant in the gas-liquid separation cylinder, so that the discharged refrigerant gas does not contain refrigerant droplets to achieve a better gas-liquid separation effect, thereby ensuring the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the gas-liquid separation device of the utility model.

[0018] Figure 3 It is a side sectional view of the gas-liquid separation device of the utility model.

[0019] Description of Figure Numbers:

[0020] 1. Fully liquid evaporator shell; 2. Gas-liquid separation cylinder; 3. Rising pipe; 4. Gas-liquid separation device; 5. Separation baffle; 6. Base; 7. Refrigerant inlet; 8. Refrigerant outlet; 9. Coolant inlet; 10. Coolant outlet; 11. Fully liquid evaporator tube path; 401. Bottom plate; 402. Front baffle; 403. Side baffle; 404. Upper baffle; 405. Defoamer. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0028] The utility model provides a technical solution: a gas-liquid separation device for a full liquid evaporator, such as Figure 1-3 As shown, it comprises a full liquid evaporator shell 1, the top of the full liquid evaporator shell 1 is connected to the bottom of the gas-liquid separation cylinder 2 through a riser 3; a gas-liquid separation device 4 is provided inside the gas-liquid separation cylinder 2; the gas-liquid separation device 4 is fixed on the inner side walls of the separation baffles 5 on the left and right sides of the gas-liquid separation cylinder 2; the gas-liquid separation device 4 is connected to the inner wall of the gas-liquid separation cylinder 2;

[0029] The gas-liquid separation device 4 is composed of a bottom plate 401, a front baffle 402, a side baffle 403, an upper baffle 404 and a demister 405. After the front baffle 402, the side baffle 403 and the upper baffle 404 are connected, the demister 405 is fixed to the bottom plate; the upper baffle 404 is a fishing net-shaped steel wire plate; a plurality of demister blocks are arranged on the bottom plate 401; the bottom plate 401 and the demister blocks are correspondingly provided with square air inlet holes; the demister 405 is a stainless steel wire mesh; the upper baffle 404 is equipped with a fishing net steel wire to allow the refrigerant to flow out.

[0030] The full liquid evaporator shell 1 is provided with a heat exchange tube inside; the bottom of the full liquid evaporator shell 1 is provided with a base 6; the bottom end of the full liquid evaporator shell 1 is provided with a plurality of refrigerant inlets 7; the left and right sides of the full liquid evaporator shell 1 are connected to the full liquid evaporator tube 11 through flanges; a coolant inlet 9 is provided at the top of one end of the full liquid evaporator tube 11; a coolant outlet 10 is provided at the bottom of one end of the full liquid evaporator tube 11; a refrigerant outlet 8 is provided in the middle of the top of the gas-liquid separation cylinder 2.

[0031] A plurality of riser pipes 3 are provided between the full liquid evaporator shell 1 and the gas-liquid separation cylinder 2 for connection.

[0032] The gas-liquid separation device 4 forms a relatively closed gas buffer filtration space in the lower part of the gas-liquid separation cylinder 2 .

[0033] The riser 2 is used to connect the shell and the gas-liquid separation cylinder 2. The evaporated refrigerant enters the gas-liquid separation cylinder 2 along the riser 3. The gas-liquid separation device 4 and the baffle 5 are welded together and welded to the inner wall of the gas-liquid separation cylinder 2 to form a left and right closed space. Finally, the evaporated refrigerant needs to pass through the separation space composed of the gas-liquid separation device 4 and the baffle 5 before it can reach the gas outlet for discharge, thereby completing the final separation of gas and liquid.

[0034] The refrigerant is input into the full liquid evaporator shell 1 through the refrigerant inlet 9 and evaporated through the heat exchange tube. The evaporated refrigerant is input into the gas-liquid separation cylinder 2 through the riser 3 and is separated by the gas-liquid separation device 4. The filtered gas is output to the refrigerant outlet 8 through the demister assembly.

[0035] The use process of the utility model is as follows:

[0036] The throttled refrigerant exchanges heat with the superheated gas or coolant in the heat exchange tube inside the full liquid evaporator shell 1, and the refrigerant absorbs heat and evaporates and boils. The evaporated refrigerant gas-liquid mixture enters the gas-liquid separation cylinder 2 along the riser 3.

[0037] During this process, some of the larger refrigerant droplets fall back into the full liquid evaporator shell 1 due to gravity, and the remaining refrigerant gas and some of the refrigerant droplets continue to rise. Because the gas-liquid separation net 4 completely isolates the refrigerant from the outlet of the gas-liquid separation cylinder 2, the refrigerant gas-liquid mixture that rises subsequently all enters the gas-liquid separation device 4 through the square air inlet holes on the bottom plate 6 of the gas-liquid separation device 4. The refrigerant flow rate through the gas-liquid separation device 4 is reduced, and the thrust formed by the refrigerant gas is also reduced. When the gravity of the remaining larger refrigerant droplets themselves is greater than the thrust generated by the gas flow, the refrigerant droplets fall and complete the separation from the refrigerant gas.

[0038] The gas-liquid separation net 4 is equipped with a stainless steel wire mesh demister 405. The small droplets contained in the refrigerant are finally blocked in the stainless steel wire mesh demister 405, thereby completing the final gas-liquid separation. The separated refrigerant gas flows out of the gas-liquid separation device 4 through the fishing net wire plate of the upper baffle 404, and is finally output from the refrigerant outlet 8 at the top of the gas-liquid separation cylinder 2.

[0039] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas-liquid separation device for a flooded evaporator, characterized in that: The invention comprises a full-liquid evaporator shell (1), the top of which is connected to the bottom of a gas-liquid separation cylinder (2) via a riser (3); a gas-liquid separation device (4) is provided inside the gas-liquid separation cylinder (2); the gas-liquid separation device (4) is fixed to the inner side walls of separation baffles (5) on the left and right sides of the gas-liquid separation cylinder (2); the gas-liquid separation device (4) is connected to the inner wall of the gas-liquid separation cylinder (2); The gas-liquid separation device (4) is composed of a bottom plate (401), a front baffle (402), a side baffle (403), an upper baffle (404) and a demister (405); the front baffle (402), the side baffle (403) and the upper baffle (404) are connected and then the demister (405) is fixed to the bottom plate; a plurality of demister blocks are arranged on the bottom plate (401); the bottom plate (401) and the demister blocks are correspondingly provided with square air inlet holes; The full-liquid evaporator shell (1) is provided with a heat exchange tube inside; the bottom of the full-liquid evaporator shell (1) is provided with a base (6); the bottom end of the full-liquid evaporator shell (1) is provided with a plurality of refrigerant inlets (7); the left and right sides of the full-liquid evaporator shell (1) are connected to the full-liquid evaporator tube (11) through flanges; the top of one end of the full-liquid evaporator tube (11) is provided with a coolant inlet (9); the bottom of one end of the full-liquid evaporator tube (11) is provided with a coolant outlet (10); and the top middle of the gas-liquid separation cylinder (2) is provided with a refrigerant outlet (8).

2. The gas-liquid separation device for a liquid-filled evaporator according to claim 1, characterized in that: A plurality of riser pipes (3) are provided between the full-liquid evaporator shell (1) and the gas-liquid separation cylinder (2) for connection.

3. The gas-liquid separation device for a liquid-filled evaporator according to claim 1, characterized in that: The gas-liquid separation device (4) forms a relatively closed gas buffer filtering space in the lower part of the gas-liquid separation cylinder (2).

4. The gas-liquid separation device for a liquid-filled evaporator according to claim 1, characterized in that: The upper baffle (404) is a fishing net-shaped steel wire plate.

5. The gas-liquid separation device for a liquid-filled evaporator according to claim 1, characterized in that: The demister (405) is a stainless steel wire mesh.

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