Built-in gas-liquid separation rotor cavity of water-to-steam screw compressor unit

Abstract

The utility model belongs to compressor technical field especially, it is built -in gas -liquid separation rotor cavity of water change steam screw compressor unit, in view of the problem that the existing screw compressor exhaust end needs to install gas -liquid separator, present the following scheme, including compression box, the inside rotation of compression box is connected with two mutually meshed screw rotors, two gas -liquid separation mechanisms are arranged in the exhaust end of compression box and are used for separating steam and liquid water, two gas -liquid separation mechanisms are same, and the gas -liquid separation mechanism includes the separation rotor cavity of fixedly connected in the exhaust end of compression box and the centrifugal impeller of fixedly connected in one screw rotor end, the inside of separation rotor cavity is provided with centrifugal chamber, the bottom of centrifugal chamber is provided with drain hole, in the utility model, the centrifugal force is provided by the centrifugal impeller built -in compression box and screw rotor linkage, and liquid water drop is thrown to the wall surface of centrifugal chamber, and the gas -liquid separation function is integrated in the rotor chamber inside, and the floor area of unit is saved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a built-in gas-liquid separation rotor cavity of a water-to-gas screw compressor unit. Background Technology

[0002] In industrial waste heat recovery, low-temperature, low-pressure steam is difficult to utilize. Screw compressors are used to compress this steam, increasing its pressure and temperature to transform it into a more readily usable heat source. However, this heat source still presents the following problems during use: The steam entering the screw compressor is often saturated or excessively humid. After being compressed by the compressor, liquid water still exists. In order to separate the water, a gas-liquid separator needs to be installed at the discharge end of the compressor. This device increases the equipment's footprint. To address this, a built-in gas-liquid separation rotor chamber for a water-to-gas screw compressor unit is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where a gas-liquid separator needs to be installed at the exhaust end of a screw compressor, and to propose a built-in gas-liquid separation rotor chamber for a water-to-gas screw compressor unit.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A water-to-gas screw compressor unit with a built-in gas-liquid separation rotor chamber includes a compression chamber, and two meshing screw rotors are rotatably connected inside the compression chamber; Two gas-liquid separation mechanisms are installed at the exhaust end of the compression box to separate steam and liquid water. The two gas-liquid separation mechanisms have the same structure. The gas-liquid separation mechanism includes a separation rotor chamber fixedly connected to the exhaust end inside the compression chamber and a centrifugal impeller fixedly connected to the end of one of the screw rotors. The separation rotor chamber has a centrifugal chamber inside, and a drain hole is provided at the bottom of the centrifugal chamber for draining liquid water. The centrifugal impeller is located inside the centrifugal chamber.

[0005] In one possible design, a reflux assembly is provided at the bottom of the drain hole for recycling liquid water. The reflux assembly includes a reflux pipe connected to the bottom of the drain hole via a pipe, and the other end of the reflux pipe is connected to a drain valve. The drain end of the drain valve is connected to a water tank via a pipe.

[0006] In one possible design, the centrifugal impeller has multiple equally spaced blades on its outer circumference, and the blades are V-shaped strips.

[0007] In one possible design, the interior of the separating rotor chamber is provided with an exhaust chamber that communicates with the centrifugal chamber. The top of the exhaust chamber is provided with an arc-shaped guide port, which is connected to an exhaust pipe. The top of the exhaust pipe is connected to an outlet pipe through a pipeline.

[0008] In one possible design, the air inlet of the compressor is connected to an air inlet pipe, the other end of which is connected to the water tank exhaust port, and the exhaust end of the air inlet pipe is connected to an air outlet pipe.

[0009] In one possible design, the rotor chambers and centrifugal impellers of the two gas-liquid separation mechanisms are coaxial with the corresponding screw rotors.

[0010] In this application: Two meshing rotors rotate at high speed inside the compression chamber, compressing the vapor-liquid mixture from the intake pipe. The compressed high-temperature, high-pressure vapor-liquid mixture is pushed to the exhaust end of the compressor and enters the separation rotor chamber. The centrifugal impeller, fixedly connected to the end of the screw rotor, rotates synchronously at high speed with the screw rotor, driving the gas-liquid mixture in the separation rotor chamber to rotate at high speed, generating a strong centrifugal force that throws denser liquid water droplets toward the wall of the centrifugal chamber. V-shaped blades provide guidance to prevent the liquid water droplets from scattering and splashing. The collected liquid water is discharged into the return pipe through the drain hole at the bottom of the centrifugal chamber. The drain valve at one end of the return pipe opens, and the liquid water is transported back to the water tank of the unit. The drain valve automatically closes after draining the liquid water to prevent steam backflow. The drain valve is a mechanical float-type drain valve. When the water level rises to a certain height, the float overcomes its own weight or the force of the auxiliary spring through the lever mechanism and pulls the valve core off the valve seat. When the water level drops low enough, the float pushes the valve core back onto the valve seat through the lever mechanism and closes the drain port. This is existing technology and will not be described in detail again. After separation, the steam enters the exhaust chamber and is smoothly discharged into the exhaust pipe through the unique arc-shaped guide port at the bottom of the exhaust chamber. Finally, it is discharged through the exhaust pipe to provide an easily usable heat source.

[0011] Beneficial effects: In this utility model, the built-in gas-liquid separation rotor chamber of the water-to-gas screw compressor unit, through the coordinated use of components such as centrifugal impeller, separation rotor chamber, drain hole, and drain valve, uses centrifugal force to throw denser liquid water droplets toward the wall of the centrifugal chamber, eliminating the need for an additional separator and integrating the gas-liquid separation function inside the rotor chamber, thus saving the unit's floor space. In this utility model, the built-in gas-liquid separation rotor chamber of the water-to-gas screw compressor unit, through the coordinated use of components such as centrifugal impeller, separation rotor chamber, drain hole, and drain valve, allows the collected liquid water to flow back into the water tank through the drain hole at the bottom of the centrifugal chamber, thereby reducing the water consumption of the water tank and saving water. In this invention, centrifugal force is provided by the centrifugal impeller built into the compression box and the screw rotor, which throws liquid water droplets toward the wall of the centrifugal chamber, integrating the gas-liquid separation function inside the rotor chamber, thus saving the unit's floor space. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a screw compressor unit with a built-in gas-liquid separation rotor cavity, which is proposed in this utility model. Figure 2 This is a schematic diagram of the internal structure of a screw compressor with a built-in gas-liquid separation rotor cavity, which is proposed in this utility model. Figure 3 This utility model proposes a built-in gas-liquid separation rotor chamber for a water-to-gas screw compressor unit. Figure 2 A magnified view of the structure at point A; Figure 4 This is a magnified structural diagram of the gas-liquid separation mechanism of the built-in gas-liquid separation rotor cavity of a water-to-gas screw compressor unit proposed in this utility model. Figure 5 This is a magnified structural diagram of the built-in gas-liquid separation rotor cavity of a water-to-gas screw compressor unit proposed in this utility model.

[0013] In the diagram: 1. Screw compressor unit; 101. Inlet pipe; 102. Compression chamber; 103. Outlet pipe; 104. Return pipe; 105. Drain valve; 106. Screw rotor; 2. Separator rotor chamber; 201. Exhaust pipe; 202. Centrifugal chamber; 203. Drain hole; 204. Exhaust chamber; 205. Arc-shaped guide port; 3. Centrifugal impeller; 301. Blade. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] In one implementation case, refer to Figures 1-5 A built-in gas-liquid separation rotor chamber includes: a compression chamber 102, and two meshing screw rotors 106 are rotatably connected inside the compression chamber 102; In this embodiment, two gas-liquid separation mechanisms are installed at the exhaust end of the compression box 102 to separate steam and liquid water. The two gas-liquid separation mechanisms have the same structure. In particular, the gas-liquid separation mechanism includes a separation rotor chamber 2 fixedly connected to the exhaust end inside the compression chamber 102 and a centrifugal impeller 3 fixedly connected to the end of one of the screw rotors 106. The separation rotor chamber 2 has a centrifugal chamber 202 inside, and a drain hole 203 is provided at the bottom of the centrifugal chamber 202 for draining liquid water. The centrifugal impeller 3 is located inside the centrifugal chamber 202. When the screw rotor 106 rotates, it drives the centrifugal impeller 3 to rotate, so that the gas-liquid mixture entering the centrifugal chamber 202 generates centrifugal force. The liquid water is thrown against the wall of the centrifugal chamber 202 and discharged through the drain hole 203, while the steam is discharged from the exhaust port.

[0016] It should be noted that a reflux assembly is provided at the bottom of the drain hole 203 for recovering liquid water. The reflux assembly includes a reflux pipe 104 connected to the bottom of the drain hole 203 via a pipe. The other end of the reflux pipe 104 is connected to a drain valve 105. The drain end of the drain valve 105 is connected to a water tank via a pipe. The drain valve 105 controls the water in the reflux pipe 104 to flow back into the water tank, preventing steam from flowing back through the drain valve 105.

[0017] This application can be used in the field of compressor technology, or in other fields applicable to this application.

[0018] In another implementation case, refer to Figures 1-5 A water-to-gas screw compressor unit with a built-in gas-liquid separation rotor cavity is applied to the field of compressor technology. The centrifugal impeller 3 has multiple equally spaced blades 301 on its outer circumference. The blades 301 are V-shaped strips. The V-shaped blades 301 are used to collect liquid water droplets with a large density, improve guidance, and avoid liquid water droplets from scattering and splashing, which would result in poor gas-liquid separation effect.

[0019] In this embodiment, the interior of the separating rotor chamber 2 is provided with an exhaust chamber 204 that is connected to the centrifugal chamber 202. The top of the exhaust chamber 204 is provided with an arc-shaped guide port 205 to optimize the steam flow path, reduce the steam flow resistance, and smoothly discharge the steam to the exhaust pipe 201. The arc-shaped guide port 205 is connected to the exhaust pipe 201, and the top of the exhaust pipe 201 is connected to the air outlet pipe 103 through a pipe.

[0020] In particular, the air inlet end of the compressor 102 is connected to the air inlet pipe 101, the other end of the air inlet pipe 101 is connected to the water tank exhaust port, and the exhaust end of the air inlet pipe 101 is connected to the air outlet pipe 103.

[0021] It should be noted that the separation rotor chamber 2 and centrifugal impeller 3 of the two gas-liquid separation mechanisms are coaxial with the corresponding screw rotor 106.

[0022] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water-to-gas screw compressor unit with a built-in gas-liquid separation rotor chamber, comprising a screw compressor unit (1), a compressor box (102), wherein two meshing screw rotors (106) are rotatably connected inside the compressor box (102), characterized in that, Also includes: Two gas-liquid separation mechanisms are installed at the exhaust end of the compression box (102) to separate steam and liquid water. The two gas-liquid separation mechanisms have the same structure. The gas-liquid separation mechanism includes a separation rotor chamber (2) fixedly connected to the exhaust end inside the compression box (102) and a centrifugal impeller (3) fixedly connected to the end of one of the screw rotors (106). The separation rotor chamber (2) has a centrifugal chamber (202) inside, and a drain hole (203) is provided at the bottom of the centrifugal chamber (202) for draining liquid water. The centrifugal impeller (3) is located inside the centrifugal chamber (202).

2. The built-in gas-liquid separation rotor chamber of a water-to-gas screw compressor unit according to claim 1, characterized in that, The bottom of the drain hole (203) is provided with a reflux assembly for recovering liquid water. The reflux assembly includes a reflux pipe (104) connected to the bottom of the drain hole (203) through a pipe. The other end of the reflux pipe (104) is connected to a drain valve (105). The drain end of the drain valve (105) is connected to a water tank through a pipe.

3. The built-in gas-liquid separation rotor chamber of a water-to-gas screw compressor unit according to claim 1, characterized in that, The centrifugal impeller (3) has multiple equally spaced blades (301) on its outer circumference, and the blades (301) are V-shaped strips.

4. The built-in gas-liquid separation rotor chamber of a water-to-gas screw compressor unit according to claim 1, characterized in that, The separation rotor cavity (2) has an exhaust cavity (204) that is connected to the centrifugal cavity (202). The top of the exhaust cavity (204) has an arc-shaped guide port (205), which is connected to an exhaust pipe (201). The top of the exhaust pipe (201) is connected to an air outlet pipe (103) through a pipe.

5. The built-in gas-liquid separation rotor chamber of a water-to-gas screw compressor unit according to claim 1, characterized in that, The air inlet of the compressor (102) is connected to an air inlet pipe (101), the other end of the air inlet pipe (101) is connected to the water tank exhaust port, and the exhaust end of the air inlet pipe (101) is connected to the air outlet pipe (103).

6. The built-in gas-liquid separation rotor chamber of a water-to-gas screw compressor unit according to claim 1, characterized in that, The rotor chamber (2) and centrifugal impeller (3) of the two gas-liquid separation mechanisms are coaxial with the corresponding screw rotor (106).

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