Hydrogenation heat exchanger cooling system

Abstract

The utility model discloses a hydrogenation heat exchanger cooling system which comprises a heat exchanger body, a refrigerating unit is arranged on the front side of the heat exchanger body, a twitching mechanism is connected between the input end of the refrigerating unit and one side of the heat exchanger body, and a circulating pipe is connected between the output end of the refrigerating unit and the other side of the heat exchanger body. The twitching mechanism comprises two circulating pipes which are arranged in an L shape, a circulating pump is installed at one end of the other circulating pipe, the other ends of the two circulating pipes are fixedly connected with bifurcated pipes, and two filter pipe assemblies which are arranged side by side are fixedly connected between the two bifurcated pipes through flanges. According to the hydrogenation heat exchanger, generated impurities and particulate matters can be temporarily retained in the space between the filter cartridge structure and the filter type end cover, so that the normal operation and the working effect of the hydrogenation heat exchanger are ensured, the other two channels with the filter structures are used alternately, the filter effect is ensured, and meanwhile, the whole cooling system can normally operate when the filter structures are cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger cooling, in particular to a hydrogenation heat exchanger cooling system. Background Art

[0002] The hydrogenation heat exchanger usually consists of two parts, one is the heat source of the heating medium, and the other is the cold source of the cooling medium. The heat source and the cold source transport the high-temperature heating medium and the low-temperature cooling medium to the hydrogenation heat exchanger through pipelines respectively. The heating medium releases heat in the process of contacting the cooling medium, so that the temperature of the cooling medium increases. At the same time, the cooling medium absorbs heat in the process of contacting the heating medium, so that the temperature of the heating medium decreases, thereby realizing the transfer and utilization of heat energy. After heat exchange, the heating medium and the cooling medium flow out of the hydrogenation heat exchanger respectively. When the cold source used in the hydrogenation heat exchanger flows in the heat exchanger and the circulation pipeline, the attachments, sediments or corrosion products on the inner wall of the pipeline will fall due to the flushing of the coolant flow. At the same time, other components in the cooling system such as pumps and valves may have particulate matter produced by wear, which will flow into the coolant, affecting the thermal conductivity of the coolant and causing the efficiency of the heat exchanger to decrease. Therefore, it is necessary to equip the cooling system with a corresponding filtering structure. However, at present, when the filtering structure is replaced, the entire cooling system needs to be suspended, thereby reducing the overall production capacity and increasing maintenance costs and energy costs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a hydrogenation heat exchanger cooling system to solve the problem of reducing the overall production capacity due to suspending the entire cooling system when replacing and cleaning the filter structure in the hydrogenation heat exchanger cooling system proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogenation heat exchanger cooling system, comprising a heat exchanger body, a refrigeration unit is arranged on the front side of the heat exchanger body, a pumping mechanism is connected between the input end of the refrigeration unit and one side of the heat exchanger body, and a circulation pipe is connected between the output end of the refrigeration unit and the other side of the heat exchanger body;

[0005] The pumping mechanism includes two flow pipes arranged in an L shape, and one end of one of the flow pipes is connected to the heat exchanger body, and a circulation pump is installed at one end of the other flow pipe, and the output end of the circulation pump is fixedly connected to the input end of the refrigeration unit, and the other ends of the two flow pipes are fixedly connected to forked pipes, and two filter tube assemblies arranged side by side are fixedly connected between the two forked pipes through flanges, and control valves are installed on both pipelines of the two forked pipes, and an early warning flow sensor is installed on one of the flow pipes close to the circulation pump, and the early warning flow sensor is electrically connected to the control valve.

[0006] Preferably, the filter tube assembly comprises a flange tube installed between two bifurcated tubes, and the inner wall of the flange tube is threadedly connected with a filter cartridge structure.

[0007] Preferably, a filtering end cap is threadedly connected to the inner wall of the rear end of the filter cartridge structure, and a filter element structure is arranged inside the filter cartridge structure.

[0008] Preferably, a positioning guide rod is fixedly connected to the middle of a side of the filter element structure away from the circulation pump, and one end of the positioning guide rod is in contact with the inner wall of the recessed portion of the filtering end cover.

[0009] Preferably, a liquid inlet pipe is fixedly connected to the circulation pipe, and solenoid valves are installed on both the liquid inlet pipe and the circulation pipe.

[0010] Preferably, one side of the top and one side of the bottom of the heat exchanger body are fixedly connected with a heat source pipe opening, and cold source pipe openings are installed on both sides of the heat exchanger body, and the two cold source pipe openings are respectively fixedly connected to one end of the circulation pipe and one end of one of the flow pipes.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, two flow channels with filtering structures are set between the two flow pipes, and control valves are provided at both ends of the two flow channels. In addition, the flow rate of the coolant in the corresponding pipeline is monitored in real time by an early warning flow sensor. When the monitored flow rate is lower than the set range, the four control valves electrically connected to the early warning flow sensor are closed and opened according to the set program, and the channel blocked by the filtering structure is replaced by a new channel, thereby ensuring the effect of cooling liquid filtering in the cooling system of the hydrogenation heat exchanger. At the same time, when replacing and cleaning the filter tube assembly, there is no need to suspend the entire system.

[0013] 2. In the utility model, the coolant flowing between the two flow pipes can be filtered by the filter element structure to temporarily retain the impurities and particulate matter generated in the entire circulation loop in the space between the filter cartridge structure and the filter end cover, thereby ensuring the normal operation and working effect of the hydrogenation heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a structural schematic diagram of the pumping mechanism of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the filter tube assembly of the utility model.

[0017] In the figure: 1. heat exchanger body; 101. heat source pipe outlet; 102. cold source pipe outlet; 2. refrigeration unit; 3. pumping mechanism; 301. circulation pipe; 302. circulation pump; 303. bifurcated pipe; 304. filter tube assembly; 3041. flange pipe; 3042. filter cartridge structure; 3043. filter end cover; 3044. filter element structure; 305. control valve; 306. early warning flow sensor; 4. circulation pipe; 401. liquid inlet pipe; 402. solenoid valve. DETAILED DESCRIPTION

[0018] 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 in 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.

[0019] To solve the problem of reducing overall production capacity due to suspending the entire cooling system when replacing or cleaning the filter structure in the existing hydrogenation heat exchanger cooling system, please refer to Figure 1-Figure 3 , an embodiment provided by the utility model:

[0020] A cooling system for a hydrogenation heat exchanger comprises a heat exchanger body 1, and a refrigerating unit 2 arranged at the front side of the heat exchanger body 1 for cooling a cooling liquid, a pumping mechanism 3 is connected between the input end of the refrigerating unit 2 and one side of the heat exchanger body 1, a circulation pipe 4 is connected between the output end of the refrigerating unit 2 and the other side of the heat exchanger body 1, and the heat exchanger body 1, the circulation pipe 4, the pumping mechanism 3 and the refrigerating unit 2 form a complete circulation loop, wherein the pumping mechanism 3 provides power to pump the cooling liquid, so that the cooling liquid circulates in the circulation loop, acts on the heat exchanger body 1, and cooperates with the refrigerating unit 2 to reduce the temperature of the cooling liquid after the action, so that it maintains a low temperature state at the beginning of the next circulation;

[0021] Specifically, the pumping mechanism 3 includes two L-shaped flow pipes 301, and one end of one of the flow pipes 301 is connected to the heat exchanger body 1, and one end of the other flow pipe 301 is installed with a circulation pump 302, and the output end of the circulation pump 302 is fixedly connected to the input end of the refrigeration unit 2. When the circulation pump 302 is running, pressure is provided for the coolant in the circulation loop to circulate the liquid. The other ends of the two flow pipes 301 are fixedly connected with bifurcated pipes 303, and two filter tube assemblies 304 arranged side by side are fixedly connected between the two bifurcated pipes 303 through flanges for filtering impurities in the coolant. Control valves 305 are installed on both pipelines of the two bifurcated pipes 303, and a warning flow sensor 306 is installed on a flow pipe 301 close to the circulation pump 302, and the warning flow sensor 306 is electrically connected to the control valve 305;

[0022] Furthermore, it is assumed that during operation, the control valves 305 in the two pipelines of the two bifurcated pipes 303 are in a closed and opened state. At this time, the coolant flows along one of the flow pipes 301, the pipeline in which the control valve 305 in the bifurcated pipe 303 is opened, and the filter tube assembly 304 toward the other flow pipe 301. In this process, the early warning flow sensor 306 is used to monitor the flow rate of the coolant in its pipeline in real time. When the flow rate monitored is lower than the set range, it indicates that the filter tube assembly 304 used is seriously blocked. At this time, an alarm is triggered to notify the operator or control system through sound, light or other applicable methods. At the same time, the four control valves 305 electrically connected to the early warning flow sensor 306 are closed and opened according to the set program to adjust the bifurcated pipes 303 at both ends of the original filter tube assembly 304 to a closed state and activate another filter tube assembly 304, so as to ensure the effect of coolant filtration in the cooling system of the hydrogenation heat exchanger. At the same time, when replacing and cleaning the filter tube assembly 304, there is no need to pause the entire system.

[0023] Reference Figure 1 and Figure 3 As shown, the filter tube assembly 304 includes a flange tube 3041 installed between two bifurcated tubes 303, the inner wall of the flange tube 3041 is threadedly connected with a filter cartridge structure 3042, the rear end inner wall of the filter cartridge structure 3042 is threadedly connected with a filter end cap 3043, a filter element structure 3044 is arranged inside the filter cartridge structure 3042, a positioning guide rod is fixedly connected to the middle of a side of the filter element structure 3044 away from the circulation pump 302, and one end of the positioning guide rod is in contact with the inner wall of the recess of the filter end cap 3043;

[0024] Specifically, when the early warning flow sensor 306 monitors that the liquid flow rate in the channel is lower than the set range, it means that the filter element structure 3044 in the filter tube assembly 304 is in a state of serious blockage. At this time, the control valve 305 on the corresponding pipeline in the bifurcated pipe 303 at both ends of the filter tube assembly 304 is closed, and then the screws on both sides of the flange pipe 3041 in the filter tube assembly 304 can be removed to separate it from the bifurcated pipe 303, and then the filter cartridge structure 3042 can be rotated to rotate it out from the inside of the flange pipe 3041, and finally the filtering end cover 3043 is removed, and the filter element structure 3044 is pulled out for cleaning. The filter element structure 3044 is made of stainless steel, has the characteristics of corrosion resistance, high temperature resistance and high filtering accuracy, can effectively filter impurities and particulate matter in the pipeline, and ensure the normal operation and working effect of the hydrogenation heat exchanger. The spatial range where the positioning guide rod is located provides a temporary retention space for impurities.

[0025] Reference Figure 1 As shown, a liquid inlet pipe 401 is fixedly connected to the circulation pipe 4, and solenoid valves 402 are installed on the liquid inlet pipe 401 and the circulation pipe 4. When coolant is added into the system, an external liquid adding device is connected through the liquid inlet pipe 401, and the two solenoid valves 402 are in an open state. When no liquid is needed, the solenoid valve 402 on the liquid inlet pipe 401 is in a closed state, and the other solenoid valve 402 is in an open state. In addition, when the coolant in the system needs to be discharged, the solenoid valve 402 on the liquid inlet pipe 401 is in an open state, and the solenoid valve on the circulation pipe 4 is in a closed state, so that when the circulation pump 302 is running, the coolant in the entire circulation loop is discharged outward along the liquid inlet pipe 401. A heat source pipe port 101 is fixedly connected to one side of the top and one side of the bottom of the heat exchanger main body 1, and a cold source pipe port 102 is installed on both sides of the heat exchanger main body 1, and the two cold source pipe ports 102 are respectively fixedly connected to one end of the circulation pipe 4 and one end of one of the flow pipes 301.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A cooling system for a hydrogenation heat exchanger, comprising a heat exchanger body (1), characterized in that: A refrigerating unit (2) is arranged on the front side of the heat exchanger body (1); a pumping mechanism (3) is connected between the input end of the refrigerating unit (2) and one side of the heat exchanger body (1); and a circulation pipe (4) is connected between the output end of the refrigerating unit (2) and the other side of the heat exchanger body (1); The pumping mechanism (3) comprises two L-shaped flow pipes (301), one end of one of the flow pipes (301) is connected to the heat exchanger body (1), one end of the other flow pipe (301) is installed with a circulation pump (302), and the output end of the circulation pump (302) is fixedly connected to the input end of the refrigeration unit (2), the other ends of the two flow pipes (301) are fixedly connected with a bifurcated pipe (303), two filter pipe assemblies (304) arranged side by side are fixedly connected between the two bifurcated pipes (303) via a flange, control valves (305) are installed on both pipelines of the two bifurcated pipes (303), and an early warning flow sensor (306) is installed on one of the flow pipes (301) close to the circulation pump (302), and the early warning flow sensor (306) is electrically connected to the control valve (305).

2. A cooling system for a hydrogenation heat exchanger according to claim 1, characterized in that: The filter tube assembly (304) comprises a flange tube (3041) installed between two bifurcated tubes (303), and the inner wall of the flange tube (3041) is threadedly connected with a filter cartridge structure (3042).

3. A cooling system for a hydrogenation heat exchanger according to claim 2, characterized in that: The inner wall at the rear end of the filter cartridge structure (3042) is threadedly connected with a filtering end cover (3043), and a filter element structure (3044) is arranged inside the filter cartridge structure (3042).

4. A cooling system for a hydrogenation heat exchanger according to claim 3, characterized in that: A positioning guide rod is fixedly connected to the middle of one side of the filter element structure (3044) away from the circulation pump (302), and one end of the positioning guide rod is in contact with the inner wall of the recessed portion of the filtering end cover (3043).

5. A cooling system for a hydrogenation heat exchanger according to claim 1, characterized in that: The circulation pipe (4) is fixedly connected with a liquid inlet pipe (401), and both the liquid inlet pipe (401) and the circulation pipe (4) are equipped with solenoid valves (402).

6. A cooling system for a hydrogenation heat exchanger according to claim 1, characterized in that: One side of the top and one side of the bottom of the heat exchanger body (1) are both fixedly connected with a heat source pipe opening (101), and both sides of the heat exchanger body (1) are installed with a cold source pipe opening (102), and the two cold source pipe openings (102) are respectively fixedly connected to one end of the circulation pipe (4) and one end of one of the flow pipes (301).

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