Cavitation eliminating device for reflux pump of atmospheric tower

Abstract

The utility model discloses a cavitation eliminating device for a reflux pump of an atmospheric tower, which belongs to the field of cavitation eliminating devices for reflux pumps and comprises a reflux tank, a water level detector is fixedly connected with the reflux tank, a cooling cylinder is fixedly mounted on the reflux tank, a water inlet pipe is fixedly mounted at the top of the cooling cylinder, and a connecting port of the water inlet pipe is fixedly connected with a connecting frame. A motor is fixedly mounted on the connecting frame, the motor is electrically connected with a water level detector, the motor is fixedly connected with a connecting column, the connecting column is rotatably connected with the connecting frame, and a rubber disc is fixedly connected to the connecting column. In order to solve the problems that the quality of a methanol product is influenced and the yield of methanol is reduced due to the fact that a reflux pump normally operates but does not dose or dose is very small, a water level detector can start an air extractor to extract air in a cooling barrel, water evaporation is accelerated, a large amount of heat can be absorbed away during water evaporation, and the effect of cooling a reflux tank is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cavitation elimination of a reflux pump of an atmospheric pressure tower, and in particular relates to a cavitation elimination device for a reflux pump of an atmospheric pressure tower. Background Art

[0002] The atmospheric tower is a common chemical equipment, generally used to process and separate gases. The working principle of the atmospheric tower is based on the difference in boiling points of gases at different temperatures, and uses the adsorption effect between molecules to separate substances.

[0003] When the traditional atmospheric tower distillation is running at full load, the atmospheric tower cooler has poor heat exchange effect due to the poor water quality of the cooling medium circulating water of the atmospheric tower cooler and the high ambient temperature in summer. The temperature of methanol vapor after cooling is 67℃--70℃. The boiling point of methanol is 64.7℃. After cooling, the temperature of the methanol gas-liquid mixture has exceeded the boiling point of methanol, resulting in the inability to completely cool the methanol gas and the increase of the reflux tank temperature. Once the temperature is too high, the reflux pump will often produce gas binding. The reflux pump operates normally but does not work or works very little. The reflux tank liquid level of the atmospheric tower is high, and the atmospheric tower pressure also becomes higher accordingly, which not only affects the quality of methanol products, but also reduces the methanol production. Utility Model Content

[0004] The purpose of the utility model is to provide a cavitation elimination device for a reflux pump of an atmospheric tower, which solves the problem that when the temperature of the reflux tank rises, the reflux pump often produces gas binding, the reflux pump operates normally but does not circulate or circulates very little, the liquid level of the reflux tank of the atmospheric tower is high, and the pressure of the atmospheric tower also becomes higher accordingly, which not only affects the quality of the methanol product, but also reduces the methanol output.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cavitation elimination device for a reflux pump of an atmospheric tower comprises a reflux groove, a water level detector is fixedly installed inside the reflux groove, a cooling cylinder is fixedly installed on the periphery of the reflux groove, a water inlet pipe is fixedly installed on the top of the cooling cylinder, a connecting port of the water inlet pipe is fixedly connected to one side of a connecting frame, a motor is fixedly installed at a middle and lower position of one outer side of the connecting frame, the motor is electrically connected to the water level detector, an output shaft of the motor is fixedly connected to one end of a connecting column, the other end of the connecting column is rotatably connected to one inner wall of the connecting frame, a rubber disc is fixedly connected to the connecting column, and the size of the rubber disc is the same as that of the connecting port of the water inlet pipe.

[0007] Specifically, a fixing bracket is fixedly installed on the cooling cylinder, the top of the fixing bracket is fixedly connected to the bottom of the vacuum pump, the other end of the vacuum pump is fixedly connected to the cooling cylinder, and the water level detector is electrically connected to the vacuum pump.

[0008] Specifically, the motor drives the connecting column to rotate at an angle of 90 degrees, so as to prevent the rubber disc and the bottom of the connecting frame from colliding during movement.

[0009] Specifically, a temperature detector is fixedly installed inside the cooling cylinder, and the temperature detector is electrically connected to the air extractor.

[0010] Specifically, one end of the reflux groove is fixedly connected to one side of a water cooler, an exhaust port, a drain port and a water inlet are provided on the water cooler, and the other side of the water cooler is fixedly connected to one end of a reflux pump.

[0011] Beneficial effects:

[0012] (1) The utility model provides a cavitation elimination device for a reflux pump of a normal pressure tower, wherein a group of cooling cylinders are installed on the periphery of the reflux tank, and a water level detector is fixedly installed inside the cooling cylinder. The water level detector is mainly used to detect the water level in the cooling cylinder. When the water level is lower than the height of the water level detector, the water level detector will control the motor to start, and the motor will drive the connecting column to rotate. The rubber disc is fixed on the connecting column, so it will also rotate, thereby opening the connecting port of the pipeline, and the water at the bottom will enter the cooling cylinder through the water inlet pipe. When the water level in the cooling cylinder reaches the height of the conventional water level detector, the water level detector will control the motor to close the connecting port, and then the water level detector will start the vacuum pump to extract the air in the cooling cylinder, accelerate the evaporation of water, and absorb a large amount of heat when the water evaporates, thereby achieving the effect of cooling the reflux tank.

[0013] (2) The utility model provides a cavitation elimination device for a reflux pump of a normal pressure tower, in which a group of water coolers are fixedly connected between the reflux pump and the reflux tank. When the methanol gas-liquid mixture refluxes into the water cooler, the water cooler will start to cool it down to prevent its temperature from exceeding the boiling point of methanol. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 for Figure 1 Right view;

[0016] Figure 3 for Figure 1 Rear view of

[0017] Figure 4 This is a schematic diagram of the connection structure of parts such as the motor, connecting shaft and rubber disc.

[0018] In the figure: 1. reflux trough; 110. cooling cylinder; 111. water cooler; 112. reflux pump; 113. vacuum pump; 114. fixed bracket; 2. water inlet pipe; 210. motor; 211. rubber disc; 212. connecting column; 213. connecting frame; 3. water level detector; 310. temperature detector. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art.

[0020] Embodiment 1:

[0021] like Figure 1-4 As shown, a cavitation elimination device for a reflux pump of an atmospheric pressure tower comprises a reflux groove 1, a water level detector 3 is fixedly installed inside the reflux groove 1, a cooling cylinder 110 is fixedly installed on the periphery of the reflux groove 1, a water inlet pipe 2 is fixedly installed on the top of the cooling cylinder 110, a connecting port of the water inlet pipe 2 is fixedly connected to one side of a connecting frame 213, a motor 210 is fixedly installed at a middle and lower position of one of the outer sides of the connecting frame 213, the motor 210 is electrically connected to the water level detector 3, an output shaft of the motor 210 is fixedly connected to one end of a connecting column 212, the other end of the connecting column 212 is rotatably connected to one of the inner walls of the connecting frame 213, a rubber disc 211 is fixedly connected to the connecting column 212, and the size of the rubber disc 211 is the same as that of the connecting port of the water inlet pipe 2.

[0022] One end of the water inlet pipe 2 will be connected to the main water pipe, and water will enter the cooling tube 110 through the water inlet pipe 2. The water level detector 3 is electrically connected to the motor 210 and the vacuum pump 113. When the water level submerges the water level detector 3, the water level detector 3 will control the motor 210 to start. The output shaft of the motor 210 is fixedly connected to one end of the connecting column 212. Therefore, after the water inlet pipe 2 is started, the connecting column 212 will be driven to rotate, and the rotation angle is 90 degrees counterclockwise. A rubber disc 211 is fixedly connected to the connecting column 212. When the connecting column 212 moves, the rubber disc 211 will be driven to move together, thereby blocking the connection port on the water inlet pipe 2, and the water level will no longer enter the cooling tube 110. After closing, the water level detector 3 will operate the vacuum pump 113 to start, and the vacuum pump 113 will extract the air in the cooling tube 110, so that the water in the cooling tube 110 evaporates quickly. When the water evaporates quickly, a large amount of heat will be taken away, thereby achieving the effect of cooling the reflux tank 1.

[0023] A fixing bracket 114 is fixedly mounted on the cooling cylinder 110 , the top of the fixing bracket 114 is fixedly connected to the bottom of the vacuum pump 113 , the other end of the vacuum pump 113 is fixedly connected to the cooling cylinder 110 , and the water level detector 3 is electrically connected to the vacuum pump 113 .

[0024] When the methanol gas-liquid mixture refluxes into the water cooler 111, the water cooler 111 is operated to start cooling it, and after cooling it enters the reflux tank 1, and the reflux tank 1 has been cooled and can absorb part of the heat of the methanol gas-liquid mixture, and then is discharged from the reflux tank 1 to enter the next step.

[0025] Embodiment 2:

[0026] like Figure 1-4 The motor 210 drives the connecting column 212 to rotate by 90 degrees to prevent the rubber disc 211 and the bottom of the connecting frame 213 from colliding during movement. A temperature detector 310 is fixedly installed inside the cooling cylinder 110, and the temperature detector 310 is electrically connected to the vacuum pump 113.

[0027] The temperature detector 310 can effectively detect the temperature inside the cooling tube 110. Once the temperature inside the cooling tube 110 reaches the threshold set by the temperature detector 310, the temperature detector 310 will start the vacuum fan 113 to extract the air inside the cooling tube 110 and cool it down again.

[0028] One end of the reflux tank 1 is fixedly connected to one side of a water cooler 111 . The water cooler 111 is provided with an exhaust port, a drain port and a water inlet. The other side of the water cooler 111 is fixedly connected to one end of a reflux pump 112 .

[0029] The installation of the water cooler 111 can effectively cool the methanol gas-liquid mixture, and after cooling, it is discharged into the reflux tank 1 for the next operation.

[0030] Working principle:

[0031] When the atmospheric pressure tower is working, one end of the water inlet pipe 2 will be connected to the main water pipe, and water will enter the cooling cylinder 110 through the water inlet pipe 2. The water level detector 3 is electrically connected to the motor 210 and the vacuum pump 113. When the water level submerges the water level detector 3, the water level detector 3 will control the motor 210 to start. The output shaft of the motor 210 is fixedly connected to one end of the connecting column 212, so after the water inlet pipe 2 is started, it will drive the connecting column 212 to rotate, and the rotation angle is 90 degrees counterclockwise. A rubber disc 211 is fixedly connected to the connecting column 212. When the connecting column 212 moves, it will drive the rubber disc 211 to move together, thereby blocking the connection port on the water inlet pipe 2, and no longer allowing the water level to enter the cooling cylinder 110. After being closed, the water level detector 3 will operate the vacuum pump 113 to start. The vacuum pump 113 will extract the air in the cooling cylinder 110, so that the water in the cooling cylinder 110 evaporates quickly. When the water evaporates quickly, it will take away a large amount of heat, thereby achieving the effect of cooling the reflux tank 1. When the methanol gas-liquid mixture refluxes into the water cooler 111, the water cooler 111 is operated to start cooling it. After cooling, it enters the reflux tank 1. The reflux tank 1 has been cooled and can absorb part of the heat of the methanol gas-liquid mixture. It is discharged from the reflux tank 1 and enters the next step. This can effectively prevent the temperature of the methanol gas-liquid mixture from exceeding the boiling point of methanol, thereby not affecting the quality and output of methanol.

[0032] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for eliminating cavitation of atmospheric tower reflux pump, characterized in that: include: A reflux trough (1), wherein a water level detector (3) is fixedly installed inside the reflux trough (1); A cooling cylinder (110), wherein the cooling cylinder (110) is fixedly mounted on the periphery of the reflux tank (1); A water inlet pipe (2), wherein the top of the cooling cylinder (110) is fixedly mounted with the water inlet pipe (2); A connecting frame (213), wherein the connecting port of the water inlet pipe (2) is fixedly connected to one side of the connecting frame (213); A motor (210), the motor (210) being fixedly mounted at a lower middle position on one outer side of the connection frame (213), and the motor (210) being electrically connected to the water level detector (3); A connecting column (212), wherein the output shaft of the motor (210) is fixedly connected to one end of the connecting column (212), and the other end of the connecting column (212) is rotatably connected to one of the inner walls of the connecting frame (213); A rubber disc (211), the connecting column (212) is fixedly connected with the rubber disc (211), and the size of the rubber disc (211) is the same as the connecting port of the water inlet pipe (2).

2. The atmospheric tower reflux pump cavitation elimination device according to claim 1, characterized in that: A fixed bracket (114) is fixedly mounted on the cooling cylinder (110), the top of the fixed bracket (114) is fixedly connected to the bottom of the vacuum pump (113), the other end of the vacuum pump (113) is fixedly connected to the cooling cylinder (110), and the water level detector (3) is electrically connected to the vacuum pump (113).

3. The atmospheric tower reflux pump cavitation elimination device according to claim 1, characterized in that: The motor (210) drives the connecting column (212) to rotate at an angle of 90 degrees, thereby preventing the rubber disc (211) and the bottom of the connecting frame (213) from colliding during movement.

4. The atmospheric tower reflux pump cavitation elimination device according to claim 1, characterized in that: A temperature detector (310) is fixedly installed inside the cooling cylinder (110), and the temperature detector (310) is electrically connected to the air exhauster (113).

5. The atmospheric tower reflux pump cavitation elimination device according to claim 1, characterized in that: One end of the reflux groove (1) is fixedly connected to one side of a water cooler (111); an exhaust port, a drain port and a water inlet are provided on the water cooler (111); and the other side of the water cooler (111) is fixedly connected to one end of a reflux pump (112).

Images