Cooling device of reaction kettle

Abstract

The utility model discloses a cooling device of a reaction kettle, which comprises a heat preservation layer, the heat preservation layer is fixedly covered outside a kettle body, a cooling cavity is formed between the heat preservation layer and the kettle body, a spiral pipe is arranged in the cooling cavity, the spiral pipe is sleeved outside the kettle body and is contacted with the kettle body, and a plurality of air outlet holes are formed in the spiral pipe along the extending direction of the pipe wall of the spiral pipe. And an air inlet pipe is fixedly arranged at the lower end of the spiral pipe, the air inlet pipe penetrates through the heat preservation layer and extends out of the heat preservation layer, and an exhaust assembly is arranged on the heat preservation layer. Under the condition that cold air enters the upper part and the lower part of the cooling cavity at the same time, the air temperature of the upper part is lower than that of the lower part, so that the cold air settles downwards to cool the lower part of the cooling cavity, the cooling temperature in the cooling cavity is uniform, the kettle body is uniformly cooled, and the reaction quality of substances in the kettle body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a cooling device for a reactor. Background Art

[0002] A reactor is broadly defined as a container where physical or chemical reactions occur. Through structural design and parameter configuration, the heating, evaporation, cooling, and low-speed mixing functions required by the process are achieved. During the cooling process of the reactor, a cooling device is required to cool the reactor.

[0003] Chinese patent publication CN216936011U discloses a polyurethane resin reactor cooling device comprising a reactor body with a cooling device fixedly connected to the outer wall of the reactor body. The cooling device comprises a sleeve, a connecting pipe, a refrigerator, and a cooling coil. The connecting pipe is fixedly connected to the outer wall of the sleeve, one end of the connecting pipe is fixedly connected to one end of the cooling coil, the outer wall of the cooling coil is provided with a leak hole, and the other end of the connecting pipe is connected to the output of the refrigerator. When the refrigerator is operating, cold air is directed from the connecting pipe into the cooling coil for transmission. The cooling coil arrangement allows the cold air to be rapidly transmitted to various locations within the upper chamber. The leak hole allows some of the cold air in the cooling coil to be released, absorbing heat from the outer wall of the reactor body and cooling the reactor body.

[0004] The disadvantage of the above-mentioned disclosed solution is that: although cold air can be transmitted to various positions in the upper chamber through the cooling coil, the cold air absorbs heat and heats up during the upward transmission process, causing a temperature difference between the upper and lower chambers, resulting in uneven cooling of the reactor and affecting the reaction quality of the substances in the reactor. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a cooling device for a reactor. The density of the air outlet holes on the spiral tube gradually decreases from top to bottom, so that the cold air can quickly reach the top of the cooling chamber, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cooling device for a reactor, comprising a thermal insulation layer, wherein a fixed cover of the thermal insulation layer is arranged on the outside of the reactor body, a cooling chamber is formed between the thermal insulation layer and the reactor body, a spiral tube is arranged in the cooling chamber, the spiral tube is sleeved on the outside of the reactor body and contacts the reactor body, a plurality of air outlet holes are opened on the spiral tube along the extension direction of its tube wall, and the density of the air outlet holes on the spiral tube gradually decreases from top to bottom, an air inlet pipe is fixedly arranged on the lower end of the spiral tube, the air inlet pipe passes through the thermal insulation layer and extends to the outside of the thermal insulation layer, and an exhaust assembly is arranged on the thermal insulation layer.

[0007] Furthermore, the pitch of the spiral tube gradually increases from top to bottom.

[0008] Furthermore, the spacing between the air outlet holes at the upper portion of the spiral tube is smaller than the spacing between the air outlet holes at the lower portion thereof.

[0009] Furthermore, the exhaust assembly includes an exhaust pipe, which is arranged at the lower part of the insulation layer, and a pressure valve is fixedly installed inside the exhaust pipe.

[0010] Furthermore, a plurality of supporting legs are fixedly provided at the lower portion of the thermal insulation layer, and a discharge pipe is fixedly provided at the lower portion of the kettle body. The discharge pipe passes through the thermal insulation layer and extends to the bottom of the thermal insulation layer.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Since the spiral tube is provided with a plurality of air outlet holes along the extension direction of its tube wall, and the density of the air outlet holes on the spiral tube gradually decreases from top to bottom, the refrigerator passes the cold air into the spiral tube through the air inlet pipe, and the amount of gas discharged from the air outlet holes at the bottom of the spiral tube is small, so that the gas can have enough power to reach the upper end of the spiral tube, ensuring that a sufficient amount of gas is discharged into the cooling chamber at the upper part of the spiral tube, so that the heat in the upper part of the cooling chamber is quickly absorbed, and since the amount of cold air gas at the upper part of the spiral tube is large, when cold air enters the upper and lower parts of the cooling chamber at the same time, the air temperature at the upper part is lower than the air temperature at the lower part, so the cold air will settle downward, thereby cooling the lower part of the cooling chamber, making the cooling temperature in the cooling chamber uniform, thereby evenly cooling the kettle body, and improving the reaction quality of the substances in the kettle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the fixing structure of the utility model;

[0015] Figure 3 This is an enlarged view of point A of the structure of the present utility model.

[0016] In the figure: 1. Kettle body; 2. Insulation layer; 3. Discharge pipe; 4. Air inlet pipe; 5. Spiral tube; 6. Air outlet; 7. Exhaust pipe; 8. Pressure valve; 9. Cooling chamber; 10. Support legs. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 3 The present invention provides a technical solution: a cooling device for a reactor, comprising an insulation layer 2 fixedly covered on the outside of a reactor body 1, with a plurality of support legs 10 fixedly provided below the insulation layer 2. A discharge pipe 3 is fixedly provided below the reactor body 1, penetrating the insulation layer 2 and extending below the insulation layer 2. A valve is provided on the discharge pipe 3 for controlling discharge of materials.

[0019] A cooling chamber 9 is formed between the insulation layer 2 and the kettle body 1. A spiral tube 5 is disposed within this cooling chamber 9. The spiral tube 5 is sleeved around the exterior of the kettle body 1 and in contact with its outer wall. The spiral tube 5 has multiple air vents 6 extending along its wall. The spacing between the air vents 6 in the upper portion of the spiral tube 5 is smaller than the spacing between the air vents 6 in the lower portion. Furthermore, the pitch of the spiral tube 5 gradually increases from top to bottom, resulting in a gradually decreasing density of the air vents 6 in the spiral tube 5.

[0020] An air inlet pipe 4 is fixedly provided at the lower end of the spiral tube 5, and the air inlet pipe 4 passes through the insulation layer 2 and extends to the outside of the insulation layer 2. An exhaust assembly is provided on the insulation layer 2, and the exhaust assembly includes an exhaust pipe 7, which is provided at the lower part of the insulation layer 2, and a pressure valve 8 is fixedly provided inside the exhaust pipe 7.

[0021] The working principle of the cooling device of a reactor provided by the utility model is as follows:

[0022] When the reactants in the kettle body 1 need to be cooled, the air outlet of the external refrigerator is connected to the air inlet pipe 4, and the refrigerator is started. The refrigerator then passes cold air into the spiral tube 5 through the air inlet pipe 4. Since the density of the air outlet holes 6 at the bottom of the spiral tube 5 is small, the amount of gas discharged from the air outlet holes 6 at the bottom of the spiral tube 5 is small, so that the gas has enough power to reach the upper end of the spiral tube 5. Since the density of the air outlet holes 6 at the top of the spiral tube 5 is high, it is ensured that a sufficient amount of gas is discharged into the cooling chamber 9 at the top of the spiral tube 5, so that the heat in the upper part of the cooling chamber 9 is quickly absorbed. And since the amount of cold air in the upper part of the spiral tube 5 is large, when cold air enters the upper and lower parts of the cooling chamber 9 at the same time, the air temperature in the upper part is lower than the air temperature in the lower part, so the cold air will settle downward, thereby cooling the lower part of the cooling chamber 9, making the cooling temperature in the cooling chamber 9 uniform.

[0023] As the gas pressure in the cooling chamber 9 gradually increases, the pressure valve 8 inside the outlet pipe slowly opens, allowing the gas that has absorbed the temperature in the reactor to flow outward, while new gas continues to enter the cooling chamber 9 through the refrigerator and the air inlet pipe 4, continuously cooling the reactor body 1.

[0024] After cooling is completed, the reactants are discharged through the discharge pipe 3.

[0025] By designing the spiral tube 5 with a gradual pitch change, the cooling gas quickly passes through the lower portion of the cooling chamber 9 and reaches the upper portion of the cooling chamber 9. This prevents the cooling gas from absorbing heat and heating up by the time it reaches the upper portion of the cooling chamber 9, thereby preventing the upper portion of the cooling chamber 9 from being hotter than the lower portion. This ensures uniform temperatures across the upper and lower portions of the cooling chamber 9, uniformly cooling the kettle 1 and improving the reaction quality of the substances within the kettle 1.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for a reactor, comprising a heat-insulating layer (2), characterized in that: The thermal insulation layer (2) is fixedly covered on the outside of the kettle body (1), and a cooling cavity (9) is formed between the thermal insulation layer (2) and the kettle body (1). A spiral tube (5) is provided in the cooling cavity (9), and the spiral tube (5) is sleeved on the outside of the kettle body (1) and in contact with the kettle body (1). The spiral tube (5) is provided with a plurality of air outlet holes (6) along the extension direction of its tube wall, and the density of the air outlet holes (6) on the spiral tube (5) gradually decreases from top to bottom. An air inlet pipe (4) is fixedly provided at the lower end of the spiral tube (5), and the air inlet pipe (4) passes through the thermal insulation layer (2) and extends to the outside of the thermal insulation layer (2). An exhaust assembly is provided on the thermal insulation layer (2).

2. The cooling device for a reactor according to claim 1, characterized in that: The pitch of the spiral tube (5) gradually increases from top to bottom.

3. The cooling device for a reactor according to claim 1 or 2, characterized in that: The spacing between the air outlet holes (6) at the upper portion of the spiral tube (5) is smaller than the spacing between the air outlet holes (6) at the lower portion thereof.

4. The cooling device for a reactor according to claim 1, characterized in that: The exhaust assembly comprises an exhaust pipe (7), the exhaust pipe (7) is arranged at the lower part of the thermal insulation layer (2), and a pressure valve (8) is fixedly arranged inside the exhaust pipe (7).

5. The cooling device for a reactor according to claim 1, characterized in that: A plurality of supporting legs (10) are fixedly provided at the lower portion of the thermal insulation layer (2), and a discharge pipe (3) is fixedly provided at the lower portion of the kettle body (1). The discharge pipe (3) penetrates the thermal insulation layer (2) and extends to the lower portion of the thermal insulation layer (2).

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