Circulating water heat exchange system with multiple cooling functions

Abstract

The utility model discloses a circulating water heat exchange system with multiple cooling functions in the technical field of petrochemical industry processing, which comprises a water cooler, a medium outlet end and a circulating water inlet end are arranged at the bottom of one side of the water cooler, and a medium inlet end and a circulating water outlet end are arranged at the top of the other side of the water cooler; the circulating water outlet end is externally connected with a circulating water return pipe, the tail end of the circulating water return pipe is connected into a circulating water tower, and circulating water is cooled in the circulating water tower and then is connected to the circulating water inlet end of the water cooler through a circulating water inlet pipe; and the circulating water inlet pipe is provided with an ice machine set which is matched with a jacket mode to realize circulating water cooling. According to the utility model, the winding pipe and the circulating water inlet pipe form the jacket, and the ice maker in the existing ice maker unit is utilized, so that all the efficiency in the system can be fully explored, the stability of the water cooler can be flexibly adjusted, the temperature control effect is further achieved, the investment cost is extremely low, the material is simple, the construction is convenient, and the effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical industry processing, in particular to a circulating water heat exchange system with multiple cooling functions. Background Art

[0002] Circulating water heat exchangers (also known as water coolers) are widely used in large-scale chemical industries. They are usually composed of cooler tubes, fixed hole plates, moving hole plates, baffles, etc. Circulating water and medium flow are used for convection heat exchange in the tube side and shell side of the water cooler, and the waste heat released by the heat medium is discharged from the outlet. The medium is cooled from high temperature to the control temperature, so that the working medium maintains the rated working temperature and reaches the process temperature control range. Heat transfer is conducive to the next step of the medium.

[0003] If the medium temperature is not transferred in time, it will directly affect production, and it is very likely to cause the equipment to trip due to over-temperature or the container to stop due to excessive pressure. The circulating water heat exchanger is often accurately calculated according to the ideal heat load at the beginning of design, and is often designed according to 110% of the ideal working conditions. However, in the actual process of water coolers being put into use, some local heat exchangers often have poor heat exchange effects, which directly leads to the inability to produce at full load. It is common to increase the inlet and outlet pressure of the entire system of the circulating water network by adding circulating water pumps, thereby increasing the flow rate, but practice has shown that this is like a drop in the bucket, and energy consumption has increased significantly, which is still not ideal. Utility Model Content

[0004] The purpose of the utility model is to provide a circulating water heat exchange system with multiple cooling functions to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a circulating water heat exchange system with multiple cooling functions, comprising a water cooler, wherein a medium outlet is provided at the bottom of one side of the water cooler and a medium inlet is provided at the top of the other side;

[0006] The water cooler is provided with a circulating water inlet at the bottom of one side and a circulating water outlet at the top of the other side;

[0007] The circulating water outlet end is connected to a circulating water return pipe, the end of which is connected to a circulating water tower. After the circulating water is cooled in the circulating water tower, it is connected to the circulating water inlet end of the water cooler through the circulating water inlet pipe.

[0008] The outside of the circulating water inlet pipe is sleeved with a first chilled water coiled pipe, which is connected to an ice machine. When in use, the ice machine is turned on or off according to the water inlet temperature of the circulating water inlet pipe, and the ice machine drives the first chilled water coiled pipe to cool the circulating water in the circulating water inlet pipe.

[0009] Preferably, the water cooler includes a tube pass and a baffle; when in use, circulating water enters from one side below the tube pass and flows out from the other side above the tube pass.

[0010] Preferably, the circulating water inlet end is arranged outside the medium outlet end, and the circulating water outlet end is also arranged outside the medium inlet end.

[0011] Preferably, at least two temperature transmitters are provided on the circulating water inlet pipe to display the temperature in the circulating water inlet pipe, facilitate the start-up and regulation of the ice machine, reduce the situation where the cooling does not meet the standard, and greatly reduce the problem of excessive temperature of the circulating water when it is used.

[0012] Preferably, two temperature transmitters are provided on the circulating water inlet pipe, including a first temperature transmitter and a second temperature transmitter. The first temperature transmitter is arranged at the liquid inlet front end of the circulating water inlet pipe, and the second temperature transmitter is arranged at the water outlet end of the circulating water inlet pipe. Effective monitoring can be achieved through reasonable setting.

[0013] Preferably, the circulating water inlet pipe is also connected to a rotary branch pipe, one end of the branch pipe is connected to the liquid inlet front end of the circulating water inlet pipe, and the other end is connected to the water outlet end of the circulating water inlet pipe. A second chilled water winding pipe is sleeved on the outer side of the pipe wall of the branch pipe, and the second chilled water winding pipe is also connected to the ice machine unit.

[0014] Preferably, the second temperature transmitter is arranged at the liquid inlet front end of the branch pipe, so as to facilitate cooling down the substandard pipeline circulating water and then passing it into the water cooler again for heat exchange.

[0015] Preferably, a first electrically-controlled valve is provided at the water inlet front end where the circulating water inlet pipe and the branch pipe meet, a second electrically-controlled valve is provided at the water inlet rear end where the circulation water inlet pipe and the branch pipe meet, and a third electrically-controlled valve is provided at the water outlet rear end where the circulation water inlet pipe and the branch pipe meet. By setting up a plurality of electrically-controlled valves, effective control of the flow direction of the circulating water can be achieved.

[0016] Preferably, a fourth electrically controlled valve is provided at the liquid inlet and reflux front end of the branch pipe.

[0017] Preferably, at least one second chilled water winding pipe is provided on the branch pipe, so that effective cooling can be achieved through regulation.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model sets a winding pipe capable of exchanging energy with the circulating water inlet pipe, passes chilled water into the winding pipe, and controls the cooling effect of the chilled water on the inlet pipe through the ice machine unit, so as to control the circulating water to reach a suitable standard temperature when entering the water cooler, reduce the situation of poor heat exchange effect, and make the winding pipe and the circulating water inlet pipe form a jacket. By using the ice machine in the existing ice machine unit, the whole efficiency of the system can be fully explored, and the stability of the water cooler can be flexibly adjusted, so as to achieve the temperature control effect. The investment cost is extremely low, the materials are simple, the construction is convenient, the effect is remarkable, and most importantly, the marginal effect is maximized;

[0020] 2. The utility model is also provided with a branch pipe for circulating return water cooling, which can facilitate the return of water to the outside for cooling when the cooling effect of the unidirectional circulating water inlet pipe is not good, so as to reach the established circulating water temperature as a whole, thereby being applicable to the entire system and making the cooling function more significant.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Water cooler, 11 pipe line, 12 baffle, 13 medium inlet end, 14 medium outlet end, 15 circulating water inlet end, 16 circulating water outlet end, 2 circulating water return pipe, 3 circulating water tower, 4 circulating water inlet pipe, 41 first temperature transmitter, 42 first electric control valve, 43 second electric control valve, 44 second temperature transmitter, 45 third electric control valve, 5 ice unit, 51 first chilled water coiled pipe, 52 second chilled water coiled pipe, 6 branch pipe, 61 fourth electric control valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 The utility model provides a technical solution: a circulating water heat exchange system with multiple cooling functions, comprising a water cooler 1, wherein a medium outlet end 14 is provided at the bottom of one side of the water cooler 1, and a medium inlet end 13 is provided at the top of the other side; a circulating water inlet end 15 is provided at the bottom of one side of the water cooler 1, and a circulating water outlet end 16 is provided at the top of the other side; the circulating water outlet end 16 is externally connected to a circulating water return pipe 2, and the end of the circulating water return pipe 2 is connected to a circulating water tower 3, and the circulating water is cooled in the circulating water tower 3 and connected to the circulating water inlet end 15 of the water cooler 1 through a circulating water inlet pipe 4; a first chilled water coiled pipe 51 is sleeved on the outside of the circulating water inlet pipe 4, and the first chilled water coiled pipe 51 is connected to an ice machine 5; when in use, the ice machine 5 is controlled to be turned on or off according to the inlet water temperature of the circulating water inlet pipe 4, and the ice machine 5 drives the first chilled water coiled pipe 51 to cool the circulating water in the circulating water inlet pipe 4.

[0028] Furthermore, the water cooler 1 includes a tube side 11 and a baffle 12; when in use, circulating water enters from one side below the tube side 11 and flows out from the other side above the tube side 11, and when in use, the medium enters from the upper shell side and flows out from the lower shell side for heat exchange.

[0029] Furthermore, the circulating water inlet 15 is arranged outside the medium outlet 14, and the circulating water outlet 16 is also arranged outside the medium inlet 13. This design allows the circulating water to flow over a larger area in the water cooler 1, achieving a more sufficient heat exchange effect.

[0030] Furthermore, at least two temperature transmitters are provided on the circulating water inlet pipe 4. By setting a plurality of temperature transmitters on the circulating water inlet pipe 4, a device that converts the temperature signal detected by the temperature sensor into a standard signal output can be interfaced with various display, recording or control systems, and can effectively observe whether the temperature of the circulating water in the pipeline reaches or meets the standard.

[0031] Furthermore, two temperature transmitters are provided on the circulating water inlet pipe 4, including a first temperature transmitter 41 and a second temperature transmitter 44. The first temperature transmitter 41 is arranged at the liquid inlet front end of the circulating water inlet pipe 4, and the second temperature transmitter 44 is arranged at the water outlet end of the circulating water inlet pipe 4. Temperature transmitters are arranged at least at these two points to monitor the temperatures at both ends, so that the valves referred to after matching can perform temperature cooling adjustment operations.

[0032] Furthermore, a rotary branch pipe 6 is connected to the circulating water inlet pipe 4, one end of the branch pipe 6 is connected to the liquid inlet front end of the circulating water inlet pipe 4, and the other end is connected to the water outlet end of the circulating water inlet pipe 4. A second chilled water winding pipe 52 is sleeved on the outer side of the pipe wall of the branch pipe 6, and the second chilled water winding pipe 52 is also connected to the ice machine 5. By setting the branch pipe 6, it is prevented that the other end of the circulating water inlet pipe 4 is cooled when the set target temperature is still not reached under the cooling of the first chilled water winding pipe 51, thereby effectively ensuring that the circulating water after cooling reaches the standard set temperature range. It should be noted that the branch pipe 6 in the present embodiment is set to only one, but in actual operation it can always be set to multiple branch pipes, so as to effectively distribute the cooling method of the circulating water to ensure the final cooling temperature.

[0033] Furthermore, the second temperature transmitter 44 is arranged at the liquid inlet front end of the branch pipe 6. Under the detection of the second temperature transmitter 44, the circulating water that does not meet the temperature is guided into the branch pipe 6, and the circulating water that meets the temperature is directly guided into the water cooler 1.

[0034] Furthermore, a first electrically-controlled valve 42 is provided at the water inlet front end where the circulating water inlet pipe 4 and the branch pipe 6 meet, a second electrically-controlled valve 43 is provided at the water inlet rear end where the circulating water inlet pipe 4 and the branch pipe 6 meet, a third electrically-controlled valve 45 is provided at the water outlet rear end where the circulating water inlet pipe 4 and the branch pipe 6 meet, and a fourth electrically-controlled valve 61 is provided at the liquid inlet reflux front end of the branch pipe 6 for control. Multiple electrically-controlled valves are arranged in multiple pipes to achieve flow control of circulating water.

[0035] Furthermore, at least one second chilled water winding pipe 52 is provided on the branch pipe 6, and the purpose achieved is the same as the above-mentioned purpose, which is mainly to achieve a sufficient cooling effect. Of course, not every second chilled water winding pipe 52 needs to be used, and not every ice machine in the ice machine group 5 needs to be turned on, but it is regulated according to the specific cooling of the circulating water.

[0036] A specific application of this embodiment is: the utility model is suitable for gas control and release of a circulating water heat exchange system with multiple cooling functions. During use, circulating water is introduced into the circulating water inlet pipe 4 through the circulating water tower 1, and the temperature of the circulating water in the pipeline is obtained by using temperature transmitters arranged at multiple locations on the circulating water inlet pipe, so as to control whether to start the ice machine of the ice machine unit 5. There is a concentrated situation. When the circulating water meets the temperature of the water cooler 1 when it comes out of the circulating water tower 6, heat exchange can be carried out directly; when the water temperature of the circulating water is too high and does not reach the appropriate temperature range, the ice machine is turned on, and the ice machine is used to input chilled water into the chilled water winding pipe. Through heat exchange, the cooling For low circulating water temperature, usually only the first chilled water winding pipe 51 needs to be used directly; however, after using the circulating water for many times, it may be that the water temperature that meets the standard cannot be reached by cooling it only once, so it is necessary to synchronously regulate the branch pipe 6. When the second temperature transmitter 44 detects that the temperature after one water cooling is still too high, the circulating water is passed through the branch pipe 6 for secondary (three or more) cooling, and the same ice machine or other ice machines in the ice machine group 5 are used for coordinated cooling. Finally, when it is detected that it meets the input temperature, it is passed into the water cooler 1 for heat exchange. The circulating water after the heat exchange flows from the circulating water outlet pipe 2 to the circulating water tower 3, realizing a circulating water flow usage method.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circulating water heat exchange system with multiple cooling functions, characterized in that: It comprises a water cooler (1), wherein a medium outlet end (14) is provided at the bottom of one side of the water cooler (1), and a medium inlet end (13) is provided at the top of the other side; The water cooler (1) has a circulating water inlet (15) at the bottom of one side and a circulating water outlet (16) at the top of the other side; The circulating water outlet end (16) is externally connected to a circulating water return pipe (2), the end of the circulating water return pipe (2) is connected to a circulating water tower (3), and the circulating water is cooled in the circulating water tower (3) and then connected to the circulating water inlet end (15) of the water cooler (1) through a circulating water inlet pipe (4); The outer part of the circulating water inlet pipe (4) is sheathed with a first refrigerated water coiled pipe (51), and the first refrigerated water coiled pipe (51) is connected to an ice machine (5); when in use, the ice machine (5) is turned on or off according to the water inlet temperature of the circulating water inlet pipe (4), and the ice machine (5) drives the first refrigerated water coiled pipe (51) to cool the circulating water in the circulating water inlet pipe (4).

2. The circulating water heat exchange system with multiple cooling functions according to claim 1, characterized in that: The water cooler (1) comprises a tube pass (11) and a baffle (12) inside; when in use, circulating water enters from one side below the tube pass (11) and flows out from the other side above the tube pass (11).

3. The circulating water heat exchange system with multiple cooling functions according to claim 1, characterized in that: The circulating water inlet end (15) is arranged outside the medium outlet end (14), and the circulating water outlet end (16) is also arranged outside the medium inlet end (13).

4. A circulating water heat exchange system with multiple cooling functions according to any one of claims 1 to 3, characterized in that: At least two temperature transmitters are arranged on the circulating water inlet pipe (4).

5. The circulating water heat exchange system with multiple cooling functions according to claim 4, characterized in that: The circulating water inlet pipe (4) is provided with two temperature transmitters, including a first temperature transmitter (41) and a second temperature transmitter (44); the first temperature transmitter (41) is arranged at the liquid inlet front end of the circulating water inlet pipe (4), and the second temperature transmitter (44) is arranged at the water outlet end of the circulating water inlet pipe (4).

6. The circulating water heat exchange system with multiple cooling functions according to claim 5, characterized in that: The circulating water inlet pipe (4) is also connected to a rotary branch pipe (6), one end of the branch pipe (6) is connected to the liquid inlet front end of the circulating water inlet pipe (4), and the other end is connected to the water outlet end of the circulating water inlet pipe (4), and a second chilled water winding pipe (52) is sleeved on the outer side of the pipe wall of the branch pipe (6), and the second chilled water winding pipe (52) is also connected to the ice machine unit (5).

7. The circulating water heat exchange system with multiple cooling functions according to claim 6, characterized in that: The second temperature transmitter (44) is arranged at the liquid inlet front end of the branch pipe (6).

8. The circulating water heat exchange system with multiple cooling functions according to claim 7, characterized in that: A first electrically controlled valve (42) is provided at the water inlet front end where the circulating water inlet pipe (4) and the branch pipe (6) meet, a second electrically controlled valve (43) is provided at the water inlet rear end where the circulating water inlet pipe (4) and the branch pipe (6) meet, and a third electrically controlled valve (45) is provided at the water outlet rear end where the circulating water inlet pipe (4) and the branch pipe (6) meet.

9. The circulating water heat exchange system with multiple cooling functions according to claim 8, characterized in that: A fourth electrically controlled valve (61) is provided at the liquid inlet and return front end of the branch pipe (6) for control.

10. The circulating water heat exchange system with multiple cooling functions according to claim 9, characterized in that: At least one second chilled water winding pipe (52) is provided on the branch pipe (6).

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