Energy-saving system for vaporizer cold energy recovery

Abstract

The utility model provides an energy-saving system for vaporizer cold energy recovery. The energy-saving system comprises a liquid storage assembly, a vaporizing assembly and a water circulation assembly. The vaporization assembly comprises an air temperature type vaporizer and a water storage container, the air temperature type vaporizer is connected with the liquid storage assembly, and the air temperature type vaporizer is arranged in the water storage container; the water circulation assembly comprises a refrigerator and a cooling water pump, the water outlet end of the refrigerator is connected with the water storage container through a pipeline, the water inlet end of the cooling water pump is connected with the water storage container through a pipeline, and the cooling water pump is used for returning cooling water in the water storage container to the refrigerator. According to the technical scheme, the problem that the surface of an existing air temperature type vaporizer is frosted and frozen is effectively solved, the cooling capacity generated by the air temperature type vaporizer and waste heat generated by the refrigerating machine are recycled, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cold recovery, and in particular to an energy-saving system for cold recovery of a vaporizer. Background Art

[0002] When low-temperature liquids such as liquid nitrogen, liquid oxygen, and LNG are vaporized, an air-temperature vaporizer is usually used to vaporize the low-temperature liquid. During vaporization, the surface of the air-temperature vaporizer is prone to frost and ice, which affects the vaporization performance of the vaporizer and causes a large amount of waste in the release of cold energy.

[0003] In some prior art, the carburetor is defrosted by spraying heat exchange liquid with a nozzle above the carburetor. This is not only costly and has a poor defrosting effect, but also incomplete utilization of cold resources, such as the patent application for a solar water heater spray defrosting and deicing device for an L-CNG filling station with application number CN202121480955.3. Utility Model Content

[0004] The present application provides an energy-saving system for recovering cold from a vaporizer, in order to solve the problems in the prior art that when low-temperature liquid is vaporized, the surface of an air-temperature vaporizer is prone to frost and ice, which affects the vaporization performance of the vaporizer, and the existing defrosting means are ineffective and the cold is not fully utilized.

[0005] To solve the above technical problems, an embodiment of the present application provides an energy-saving system for recovering cold energy from a vaporizer, comprising: a liquid storage component, a vaporization component and a water circulation component; the vaporization component comprises an air-temperature vaporizer and a water storage container, the air-temperature vaporizer is connected to the liquid storage component, and the air-temperature vaporizer is arranged in the water storage container; the water circulation component comprises a refrigerator and a cooling water pump, the water outlet end of the refrigerator is connected to the water storage container through a pipeline, the water inlet end of the cooling water pump is connected to the water storage container through a pipeline, and the cooling water pump is used to return the cooling water in the water storage container to the refrigerator.

[0006] In some embodiments, the vaporization assembly further includes a control structure, a flow sensor is provided at the cooling water outlet of the refrigerator, and the flow sensor is electrically connected to the control structure.

[0007] In some embodiments, there are multiple air-temperature vaporizers, and the multiple air-temperature vaporizers are arranged in parallel. A main valve is provided on the connecting pipeline between the liquid storage assembly and the multiple air-temperature vaporizers, and a branch valve is provided on the branch pipeline of each air-temperature vaporizer. The main valve and the branch valve are both electrically connected to the control structure.

[0008] In some embodiments, there are multiple water storage containers, and multiple air-temperature vaporizers are respectively disposed inside the multiple water storage containers.

[0009] In some embodiments, the water outlet of the refrigerator is connected to multiple water storage containers, and water inlet regulating valves are provided on the pipes connecting the multiple water storage containers and the water outlet of the refrigerator. The multiple water inlet regulating valves are electrically connected to the control structure.

[0010] In some embodiments, the water inlet end of the cooling water pump is connected to multiple water storage containers, and return water regulating valves are provided on the pipes connecting the multiple water storage containers and the water inlet end of the cooling water pump, and the multiple return water regulating valves are electrically connected to the control structure.

[0011] In some embodiments, the water inlet regulating valve and the water return regulating valve are both arranged on a side away from the air temperature type vaporizer.

[0012] In some embodiments, the water storage container is a water storage tank, a filter screen is arranged on the top of the water storage tank, and a sewage pipe is arranged on the bottom side wall of the water storage tank.

[0013] In some embodiments, a bracket is provided at the bottom of the water storage tank, the air-temperature vaporizer is provided on the bracket, and a pipe rack is provided on the inner wall of the water storage tank.

[0014] In some embodiments, the water storage tank is provided with a plurality of wave-proof baffles along the axial direction of the tank body.

[0015] Through the above technical scheme, the energy-saving system for recovering cold energy from the vaporizer provided by the present application, the liquid in the liquid storage component enters the air-temperature vaporizer for vaporization, the air-temperature vaporizer is arranged in a water storage container, and the heat provided by the cooling water provided by the water outlet of the refrigerator in the water storage container is used to realize further vaporization and surface defrosting of the vaporizer, and at the same time, the cooling of the cooling water of the refrigerator is also realized. The cooling water in the water storage container that has been cooled is returned to the refrigerator through the cooling water pump, so that cold energy and waste heat are recycled. The technical scheme of the present application effectively solves the problem of frost and ice on the surface of the existing air-temperature vaporizer, and makes the cold energy generated by the air-temperature vaporizer and the waste heat generated by the refrigerator recycled, thereby improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of an energy-saving system for recovering cold energy from a vaporizer according to an embodiment of the present application is shown;

[0018] Figure 2A schematic diagram of a water storage container of an energy-saving system for recovering cold energy from a evaporator according to another embodiment of the present application is shown.

[0019] Description of reference numerals:

[0020] 10. Liquid storage assembly; 20. Vaporization assembly; 21. Air-temperature vaporizer; 22. Water storage container; 221. Filter; 222. Drain pipe; 223. Bracket; 224. Pipe rack; 225. Wave-proof baffle; 30. Water circulation assembly; 31. Refrigerator; 311. Water inlet regulating valve; 32. Cooling water pump; 321. Return water regulating valve; 40. Cooling tower. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0022] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0023] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0024] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0025] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0026] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] like Figure 1 As shown, embodiment 1 shows an energy-saving system for recovering cold energy from a vaporizer, comprising: a liquid storage component 10, a vaporization component 20 and a water circulation component 30; the vaporization component comprises an air-temperature vaporizer 21 and a water storage container 22, the air-temperature vaporizer 21 is connected to the liquid storage component 10, and the air-temperature vaporizer 21 is arranged in the water storage container 22; the water circulation component comprises a refrigerator 31 and a cooling water pump 32, the water outlet end of the refrigerator 31 is connected to the water storage container 22 through a pipeline, the water inlet end of the cooling water pump 32 is connected to the water storage container 22 through a pipeline, and the cooling water pump 32 is used to return the cooling water in the water storage container 22 to the refrigerator 31.

[0029] Using the technical solution of the first embodiment, the energy-saving system for recovering cold from the vaporizer provided by the present application, the liquid in the liquid storage assembly 10 enters the air-temperature vaporizer 21 for vaporization, and the air-temperature vaporizer 21 is arranged in the water storage container 22. The heat provided by the cooling water provided by the outlet of the refrigerator 31 in the water storage container 22 realizes the further vaporization of the liquid gas and the defrosting of the outer surface of the air-temperature vaporizer 21, and also realizes the cooling of the cooling water of the refrigerator 31. The cooling water in the water storage container 22 that has been cooled is returned to the refrigerator 31 through the cooling water pump 32, so that the cold and waste heat are recycled. The technical solution of the present application effectively solves the problem of frost and ice on the surface of the existing air-temperature vaporizer, and makes the cold generated by the air-temperature vaporizer and the waste heat generated by the refrigerator recycled, thereby improving the energy utilization efficiency.

[0030] like Figure 1 As shown, in the technical solution of the first embodiment, the vaporization component also includes a control structure, and a flow sensor is provided at the cooling water outlet of the refrigerator 31, and the flow sensor is electrically connected to the control structure. Since impurities and scale mixed in the cooling water will block the pipeline and cause poor water flow, a flow sensor is provided to monitor the flow of the cooling water outlet pipeline, and a blockage alarm prompt is issued when the flow is detected to be lower than the alarm setting value, and the pipeline can be cleaned or replaced at this time; at the same time, since the refrigerator 31 is generally connected to the cooling tower 40 for cooling the cooling water, the flow sensor can be provided to monitor the flow of the cooling water outlet in real time, and the signal is transmitted to the control structure, and the control structure sends a control signal to the electric regulating valve provided on the cooling tower 40, thereby adjusting the opening size of the electric regulating valve to realize the intelligent distribution of the cooling water flow between the cooling tower 40 and the water storage container 22, so that the heat of the cooling water of the refrigerator 31 that originally needs to be cooled by the cooling tower 40 is partially cooled by the coldness of the air-temperature vaporizer 21, and such a setting reduces the operating cost of the cooling tower 40 and saves energy consumption.

[0031] like Figure 1As shown, in the technical solution of the first embodiment, there are multiple air-temperature vaporizers 21, and the multiple air-temperature vaporizers 21 are arranged in parallel. A main valve is arranged on the connecting pipeline between the liquid storage assembly 10 and the multiple air-temperature vaporizers 21, and a branch valve is arranged on the branch pipeline of each air-temperature vaporizer 21. The main valve and the branch valve are electrically connected to the control structure. The continuous working time of a general air-temperature vaporizer is generally 6 to 8 hours. If it exceeds 8 hours, the air-temperature vaporizer will easily frost and reduce the efficiency of the vaporizer. In order to avoid the problems of poor vaporization effect and reduced equipment service life caused by the continuous full-load operation of the air-temperature vaporizer 21 and the long service life, multiple units are connected in parallel to facilitate the switching of multiple units. In the first embodiment, two air-temperature vaporizers 21 are arranged in parallel. When the working time of the first air-temperature vaporizer 21 exceeds 8 hours, the branch valve on the branch pipeline of the first air-temperature vaporizer 21 is closed through the control structure, and the branch valve on the branch pipeline of the second air-temperature vaporizer 21 is opened to vaporize the low-temperature liquid. This prevents the air-temperature vaporizer 21 from over-operating while ensuring that the working efficiency will not be reduced. Cooling water is introduced into the water storage container 22 where the air-temperature vaporizer 21 is located, and heat exchange is performed through the cooling water. This not only can defrost the surface of the air-temperature vaporizer 21 and make up for the shortcoming of slow natural defrosting of the surface of the air-temperature vaporizer 21, but also can perform secondary vaporization on the low-temperature liquid in the vaporizer. Since the vaporization effect of the air-temperature vaporizer 21 is generally only about 65%, especially when the weather is cold and the effect of the air-temperature vaporizer 21 is not good, the present application can not only further improve the vaporization rate of the air-temperature vaporizer 21, but also save space and reduce costs by connecting cooling water to the water storage container 22 for secondary vaporization.

[0032] In some embodiments of the present application, there are multiple water storage containers 22, and multiple air-temperature vaporizers 21 are respectively arranged inside the multiple water storage containers 22. The multiple air-temperature vaporizers 21 are respectively arranged in the multiple water storage containers 22, so that the multiple air-temperature vaporizers arranged in parallel can be connected to cooling water for heat exchange. The existence of multiple water storage containers 22 enables the multiple air-temperature vaporizers 21 arranged in parallel to work simultaneously when necessary. When the working time reaches the rated length, cooling water can be connected to the multiple water storage containers 22 at the same time for heat exchange, which not only saves the natural defrosting time of air-temperature heat exchange, but also improves work efficiency.

[0033] In some embodiments of the present application, the water outlet of the refrigerator 31 is connected to multiple water storage containers 22, and the pipes connecting the multiple water storage containers 22 and the water outlet of the refrigerator 31 are all provided with water inlet regulating valves 311, and the multiple water inlet regulating valves 311 are electrically connected to the control structure. The arrangement that the water outlet of the refrigerator 31 is connected to the multiple water storage containers 22 allows cooling water to be input into each water storage container 22 as needed, and the flow rate of cooling water and the total amount of water inflow are adjusted by controlling each water inlet regulating valve 311 through the control structure.

[0034] In some embodiments of the present application, the water inlet end of the cooling water pump 32 is connected to multiple water storage containers 22, and the pipes connecting the multiple water storage containers 22 and the water inlet end of the cooling water pump 32 are all provided with a return water regulating valve 321, and the multiple return water regulating valves 321 are electrically connected to the control structure. The setting that the water inlet end of the cooling water pump 32 is connected to multiple water storage containers 22 allows the cooling water in each water storage container 22 to be returned to the refrigerator 31, and the flow rate and the total amount of return water of the cooling water are adjusted by controlling each return water regulating valve 321 through the control structure. Such a setting allows the heat of the cooling water of the refrigerator 31 that originally needs to be cooled by the cooling tower 40 to be partially cooled by the coldness of the air temperature evaporator 21, thereby reducing the operating cost of the cooling tower 40 and saving energy consumption. A temperature monitor can also be installed on the water storage container 22. When the cooling water in the water storage container 22 reaches the return water temperature, the return water regulating valve 321 is opened through the control structure to enable the cooling water pump 32 to perform the return water operation.

[0035] like Figure 1 As shown, in the technical solution of the first embodiment, the water inlet regulating valve 311 and the water return regulating valve 321 are both arranged on a side away from the air temperature type vaporizer 21. The water inlet regulating valve 311 and the water return regulating valve 321 are arranged on a side away from the air temperature type vaporizer 21, which is convenient for replacement, maintenance, and water inlet and water return operations. As needed, the water inlet regulating valve 311 and the water return regulating valve 321 can also be set as manual regulating valves.

[0036] like Figure 2 As shown, in some embodiments of the present application, the water storage container 22 is a water tank, a filter screen 221 is provided on the top of the water tank, and a drain pipe 222 is provided on the side wall of the bottom of the water tank. The water tank is a sealed tank body, and can also be a tank body with an open top. A filter screen 221 is provided on the top of the water tank to filter impurities in the cooling water, which increases the number of times the cooling water is recycled. The filter screen 221 is provided with a channel that facilitates the cooling water return pipeline to extend into the bottom of the water tank. A drain pipe 222 is provided on the side wall of the bottom of the water tank, which can not only discharge the remaining impurities and wastewater at the bottom of the water tank, but also release the pressure in the water tank by discharging cooling water when the pressure in the water tank is too high. A faucet is provided on the drain pipe 222 to facilitate manual drainage.

[0037] like Figure 2 As shown, in some embodiments of the present application, a bracket 223 is provided at the bottom of the water storage tank, the air-temperature vaporizer 21 is provided on the bracket 223, and a pipe rack 224 is provided on the side wall of the water storage tank. The air-temperature vaporizer 21 is fixedly connected to the bracket 223. The setting of the bracket 223 can ensure the stable placement of the air-temperature vaporizer 21, and can also play the role of a lifting ring when replacing the air-temperature vaporizer 21, and the bracket 223 and the air-temperature vaporizer 21 are lifted together to ensure the safety of the air-temperature vaporizer 21 when it is lifted and lowered. The pipe rack 224 is used to fix the cooling water inlet pipeline. The pipe rack 224 is provided with a through hole that matches the cooling water inlet pipeline. The cooling water inlet pipeline is fixed on the pipe rack 224 through the through hole to avoid the splashing of cooling water caused by the swinging of the inlet pipeline due to excessive inlet cooling water flow.

[0038] like Figure 2 As shown, in some embodiments of the present application, a water storage tank is provided with a plurality of wave-proof baffles 225 along the axial direction of the tank body. The plurality of wave-proof baffles 225 are evenly arranged inside the water storage tank and fixedly connected to the water storage tank body. Such an arrangement can not only prevent the cooling water in the water storage tank from causing excessive impact on the tank body due to the flow of inlet and return water, but also play a role in reinforcing the tank body. When the water storage tank is set as a sealed tank body, an over-temperature and over-pressure protection device can also be set on the tank body to prevent cracking, deformation, etc. caused by excessive temperature and pressure in the water storage tank.

[0039] In some embodiments of the present application, Figure 1 As shown, the water storage container 22 is a pit. The design of the pit not only saves space and reduces costs, but also makes it more convenient for the air-temperature vaporizer 21 to inlet liquid and the cooling water to inlet and return water. At the same time, the pit has better performances such as pressure resistance and crack resistance. As needed, the water storage container can also be set as other containers, such as a cofferdam, etc.

[0040] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0041] In summary, through the above technical scheme, the energy-saving system for recovering cold from the vaporizer provided by the present application, the liquid in the liquid storage component enters the air-temperature vaporizer for vaporization, the air-temperature vaporizer is arranged in a water storage container, and the heat provided by the cooling water provided by the water outlet of the refrigerator in the water storage container is used to realize further vaporization and surface defrosting of the vaporizer, and at the same time, the cooling of the cooling water of the refrigerator is also realized. The cooled cooling water in the water storage container is returned to the refrigerator through the cooling water pump, so that cold and waste heat are recycled. The technical scheme of the present application effectively solves the problem of frost and ice on the surface of the existing air-temperature vaporizer, and enables the cold generated by the air-temperature vaporizer and the waste heat generated by the refrigerator to be recycled, thereby improving energy utilization efficiency.

[0042] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. An energy-saving system for evaporator cold recovery, characterized in that: include: Liquid storage component (10); A vaporization assembly (20), the vaporization assembly comprising an air-temperature vaporizer (21) and a water storage container (22), the air-temperature vaporizer (21) being connected to the liquid storage assembly (10), and the air-temperature vaporizer (21) being arranged in the water storage container (22); A water circulation component (30), the water circulation component comprising a refrigerator (31) and a cooling water pump (32), the water outlet end of the refrigerator (31) being connected to the water storage container (22) via a pipeline, the water inlet end of the cooling water pump (32) being connected to the water storage container (22) via a pipeline, and the cooling water pump (32) being used to return cooling water in the water storage container (22) to the refrigerator (31).

2. The energy-saving system for evaporator cold recovery according to claim 1, characterized in that: The vaporization component also includes a control structure. A flow sensor is provided at the cooling water outlet of the refrigerator (31). The flow sensor is electrically connected to the control structure.

3. The energy-saving system for recovering cold energy from a vaporizer according to claim 2, characterized in that: There are a plurality of air-temperature vaporizers (21), and the plurality of air-temperature vaporizers (21) are arranged in parallel. A main valve is provided on the connecting pipeline between the liquid storage assembly (10) and the plurality of air-temperature vaporizers (21), and a branch valve is provided on the branch pipeline of each of the air-temperature vaporizers (21). The main valve and the branch valves are both electrically connected to the control structure.

4. The energy-saving system for evaporator cold recovery according to claim 3, characterized in that: There are a plurality of water storage containers (22), and a plurality of air-temperature vaporizers (21) are respectively arranged inside the plurality of water storage containers (22).

5. The energy-saving system for evaporator cold recovery according to claim 4, characterized in that: The water outlet end of the refrigerator (31) is connected to the plurality of water storage containers (22), and the pipelines connecting the plurality of water storage containers (22) and the water outlet end of the refrigerator (31) are provided with water inlet regulating valves (311), and the plurality of water inlet regulating valves (311) are electrically connected to the control structure.

6. The energy-saving system for evaporator cold recovery according to claim 5, characterized in that: The water inlet end of the cooling water pump (32) is connected to the plurality of water storage containers (22), and a return water regulating valve (321) is provided on the pipeline connecting the plurality of water storage containers (22) and the water inlet end of the cooling water pump (32), and the plurality of return water regulating valves (321) are electrically connected to the control structure.

7. The energy-saving system for recovering cold energy from a vaporizer according to claim 6, characterized in that: The water inlet regulating valve (311) and the water return regulating valve (321) are both arranged on a side away from the air-temperature vaporizer (21).

8. The energy-saving system for recovering cold energy from a vaporizer according to claim 6, characterized in that: The water storage container (22) is a water storage tank, a filter screen (221) is arranged on the top of the water storage tank, and a sewage pipe (222) is arranged on the side wall of the bottom of the water storage tank.

9. The energy-saving system for evaporator cold recovery according to claim 8, characterized in that: A bracket (223) is provided at the bottom of the water storage tank, the air-temperature vaporizer (21) is arranged on the bracket (223), and a pipeline rack (224) is provided on the inner wall of the water storage tank.

10. The energy-saving system for evaporator cold recovery according to claim 8, characterized in that: A plurality of wave-proof baffles (225) are arranged inside the water storage tank along the axial direction of the tank body.

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