CN215981982U - Heat exchange type liquid nitrogen vaporization system - Google Patents

Abstract

The utility model discloses a heat exchange type liquid nitrogen vaporization system, a control method and electronic equipment, which are used for solving the problem of low energy utilization rate of liquid nitrogen vaporization. This scheme includes: a heat exchange box provided with a first inner cavity, a heat exchange tube and an outlet; the heat exchange tube is arranged in the first inner cavity and is not communicated with the first inner cavity, and is used for introducing a heat transfer medium so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated; the gasification box is provided with a second inner cavity and a gasification pipe; the gasification pipe is arranged in the second inner cavity and is not communicated with the second inner cavity, and is used for introducing liquid nitrogen, so that the heat transfer medium led out from the outlet of the heat exchange box heats the liquid nitrogen in the second inner cavity, and then nitrogen vaporized by the liquid nitrogen through heating is led out from the gasification pipe; and the liquid driving pump is communicated with the heat exchange tube and is used for driving the heat transfer medium to flow in the heat exchange tube and the second inner cavity. The system provided by the embodiment of the application has the advantages of high heat energy utilization rate, energy conservation, environmental protection, good economical efficiency and low noise.

Description

Heat exchange type liquid nitrogen vaporization system

Technical Field

The utility model relates to the field of industry, in particular to a heat exchange type liquid nitrogen vaporization system, a control method and electronic equipment.

Background

In the field of oil and gas fields, high-pressure liquid nitrogen needs to be converted into normal-temperature high-pressure nitrogen for transportation and application. Currently available liquid nitrogen devices include both diesel-drive and electric-drive types. The heat source for the operation of the diesel drive type liquid nitrogen equipment is generated by burning fuel oil, and the heat source for the operation of the electric drive type liquid nitrogen equipment is electric heating. The two kinds of liquid nitrogen equipment have the problems of high energy consumption and high maintenance cost.

How to improve the energy utilization rate of liquid nitrogen vaporization is the technical problem that this application will solve.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a heat exchange type liquid nitrogen vaporization system, a control method, and an electronic device, so as to solve the problem of low energy utilization rate of liquid nitrogen vaporization.

In a first aspect, a heat exchange type liquid nitrogen vaporization system is provided, comprising:

a heat exchange box provided with a first inner cavity, a heat exchange tube and an outlet; wherein the content of the first and second substances,

the first inner cavity is used for introducing a heat source material to heat;

the heat exchange tube is arranged in the first inner cavity, is not communicated with the first inner cavity and is used for introducing a heat transfer medium so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated;

the gasification box is provided with a second inner cavity and a gasification pipe; wherein the content of the first and second substances,

the second inner cavity is used for introducing a heat transfer medium led out from an outlet of the heat exchange box;

the gasification pipe is arranged in the second inner cavity, is not communicated with the second inner cavity and is used for introducing liquid nitrogen, so that the heat transfer medium led out from the outlet of the heat exchange box heats the liquid nitrogen in the second inner cavity, and then nitrogen gas vaporized by the liquid nitrogen through heating is led out from the gasification pipe;

and the liquid driving pump is communicated with the heat exchange tube and is used for driving the heat transfer medium to flow in the heat exchange tube and the second inner cavity.

In a second aspect, a method for controlling heat exchange type liquid nitrogen vaporization is provided, which is applied to the heat exchange type liquid nitrogen vaporization system according to the first aspect, and includes:

obtaining the temperature of a heat source material introduced into a first inner cavity of a heat exchange box;

when the temperature of the heat source material is higher than that of the heat transfer medium, controlling the outlet of the heat exchange box to be communicated with the second inner cavity of the gasification box;

and introducing the heat transfer medium into the heat exchange tubes of the heat exchange box so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated, wherein the heated heat transfer medium is used for heating liquid nitrogen to obtain nitrogen.

In a third aspect, an electronic device is provided, which includes:

the acquisition module is used for acquiring the temperature of a heat source material introduced into a first inner cavity of the heat exchange box;

the first control module is used for controlling the outlet of the heat exchange box to be communicated with the second inner cavity of the gasification box when the temperature of the heat source material is higher than that of the heat transfer medium;

and the second control module is used for introducing the heat transfer medium into the heat exchange tube of the heat exchange box so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated, and the heated heat transfer medium is used for heating liquid nitrogen to obtain nitrogen.

In a fourth aspect, an electronic device is provided, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the second aspect.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method according to the second aspect.

In an embodiment of the application, a heat exchange type liquid nitrogen vaporization system is provided and comprises a heat exchange box, a vaporization box and a liquid displacement pump. The heat exchange box and the gasification box in the system can realize heat exchange so as to realize the heating of the heat source material to the heat transfer medium and the heating of the heat transfer medium to the liquid nitrogen, thereby realizing the vaporization of the liquid nitrogen. The system provided by the embodiment of the application has the advantages of high heat energy utilization rate, energy conservation, environmental protection, good economical efficiency and low noise.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is one of the schematic structural diagrams of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 2 is a second schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 3 is a third schematic structural diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

FIG. 4 is a fourth schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 5 is a fifth schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

FIG. 6 is a sixth schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 7 is a seventh schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 8 is an eighth schematic diagram of a heat exchange type liquid nitrogen vaporization system according to an embodiment of the present invention.

FIG. 9 is a ninth schematic diagram of a heat exchange liquid nitrogen vaporization system according to an embodiment of the present invention.

Fig. 10 is a schematic flow chart of a heat exchange type liquid nitrogen vaporization control method according to an embodiment of the present invention.

Fig. 11 is a second schematic flow chart of a heat exchange type liquid nitrogen vaporization control method according to an embodiment of the present invention.

Fig. 12 is a third schematic flow chart of a heat exchange type liquid nitrogen vaporization control method according to an embodiment of the present invention.

Fig. 13 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The reference numbers in the present application are only used for distinguishing the steps in the scheme and are not used for limiting the execution sequence of the steps, and the specific execution sequence is described in the specification.

In the related field of oil and gas field development, the liquid nitrogen vaporization can be realized by applying liquid nitrogen equipment in the following various forms by dividing the liquid nitrogen equipment in an evaporation form:

1. firewood drive heat recovery type

The diesel-driven heat recovery type device takes diesel oil as an energy source and realizes liquid nitrogen vaporization through combustion heating. As engine emission requirements increase, engine exhaust heat cannot be recovered. In order to meet the heat requirement of liquid nitrogen gasification, the power of an engine needs to be increased, the equipment cost is greatly increased, and the condition of resource waste exists.

2. Direct combustion type

The direct-fired equipment uses coal or other materials as fuel to burn and generate heat to realize vaporization of liquid nitrogen. Waste gas generated by combustion of the evaporator is directly discharged into the atmosphere, and the waste gas discharged in an operation mode is not environment-friendly, so that the environment is polluted, and the natural environment which depends on human existence is extremely easily damaged.

3. Boiler heating type

The boiler is special equipment, performs household management, is difficult to realize cross-region operation, and is difficult to be widely applied in practical application. Moreover, the method needs to be operated with a certificate, has high requirements on workers and is difficult to popularize.

4. Air temperature type

The air-temperature gasifier heats liquid nitrogen in the heat exchange tube by utilizing natural convection of air so as to evaporate the liquid nitrogen into nitrogen. The discharge temperature of nitrogen is 10-15 ℃ lower than the ambient temperature, the gasification efficiency is low, the liquid nitrogen vaporization is difficult to realize efficiently, and the resource waste is caused.

5. Electric-driving electric heating type

The electric-driven electric heating type equipment directly uses electric heating to gasify liquid nitrogen, and the new trend of liquid nitrogen equipment development is met. However, the electric-driven heating type consumes a very large amount of electric power due to the particularity of the liquid nitrogen facility.

In order to improve the resource utilization rate in the liquid nitrogen vaporization process, realize energy-concerving and environment-protective, avoid the wasting of resources, this application embodiment provides a heat exchange type liquid nitrogen vaporization system, as shown in fig. 1, include:

a heat exchange tank 11 provided with a first inner chamber 111, a heat exchange tube 112 and an outlet 113; wherein the content of the first and second substances,

the first inner cavity 111 is used for introducing a heat source material for heating;

the heat exchange tube 112 is located in the first inner cavity 111 and is not communicated with the first inner cavity 111, and is used for introducing a heat transfer medium, so that the heated heat transfer medium is led out to the outlet 113 after the heat source material is heated.

The system provided by the embodiment of the application can comprise one or more heat exchange boxes, and each heat exchange box is provided with a feeding hole and a discharging hole. One or more heat exchange tubes may be arranged inside the heat exchange box, and the heat exchange tubes may be arranged inside the heat exchange box in a 'return' shape, an 'S' shape or other forms so as to increase the heat exchange area.

When the heat exchange tubes are multiple, the adjacent heat exchange tubes can be connected in sequence through the flow guide tubes so as to conduct heat transfer media in different heat exchange tubes. Wherein, the heat exchange tubes are all made of materials with good heat conductivity.

In practical application, when the heat exchanger is used, the heat source material is introduced into the heat exchange box, and the heat transfer medium is introduced into the heat exchange box from the heat exchange tube, so that the heat transfer medium can absorb the heat of the heat source material in the heat exchange box, the heat transfer is also heated, and the heat transfer is realized. The heat source material may be hot gas or hot liquid.

The system also comprises a gasification box 12, wherein the gasification box 12 is provided with a second inner cavity 121 and a gasification pipe 122; wherein the content of the first and second substances,

the second inner cavity 121 is used for introducing a heat transfer medium led out from the outlet 113 of the heat exchange box 11;

the vaporizing tube 122 is located in the second inner cavity 121 and is not communicated with the second inner cavity 121, and is configured to introduce liquid nitrogen, so that after the heat transfer medium led out from the outlet 113 of the heat exchange box 11 heats the liquid nitrogen in the second inner cavity 121, nitrogen gas vaporized by the liquid nitrogen through heating is led out from the vaporizing tube 122.

Based on the solutions provided in the above embodiments, optionally, the heat source material includes at least one of the following: hydraulic oil, lubricating oil, cylinder liner water and engine exhaust gas.

Wherein, the gasification case can be seted up feed inlet and discharge gate, and the feed inlet is used for leading-in heat-conducting medium to the second inner chamber from the heat exchange pipe of heat exchange case, and the discharge gate is used for deriving this heat-conducting medium from the second inner chamber. Specifically, the feed inlet of the gasification box can be connected with the port of the heat exchange tube through the guide tube. In addition, the gasification box comprises one or more gasification pipes, and two ends of each gasification pipe can extend out of the gasification box so as to facilitate the introduction of liquid nitrogen into an external pipeline.

In practical application, the heat transfer medium heated by the heat exchange box is introduced into the inner cavity of the gasification box, and the liquid nitrogen to be gasified is introduced into the gasification pipe, so that the heat energy of the heat transfer medium can be utilized to vaporize the liquid nitrogen to be gasified into gas, and the gas can be conveyed and utilized.

The system also includes a drive pump 13 in communication with said heat exchange tube 112 for driving the flow of heat transfer medium through said heat exchange tube 112 and said second interior 121.

Specifically, the liquid drive pump is arranged on the heat exchange tube or a pipeline communicated with the heat exchange tube. When the heat exchanger is used, the liquid driving pump is started to enable the heat transfer medium to flow, and the heat exchange process is realized. Optionally, the liquid-displacement pump includes a centrifugal pump or a screw pump.

The system that this application embodiment provided, including heat exchange box, gasification case and displacement pump. The heat exchange box and the gasification box in the system can realize heat exchange so as to realize the heating of the heat source material to the heat transfer medium and the heating of the heat transfer medium to the liquid nitrogen, thereby realizing the vaporization of the liquid nitrogen. The system provided by the embodiment of the application has the advantages of high heat energy utilization rate, energy conservation, environmental protection, good economical efficiency and low noise.

Based on the solution provided by the foregoing embodiment, optionally, as shown in fig. 2, the system further includes:

at least one auxiliary heating pipe 21 communicating with the heat exchange pipe 112;

an auxiliary valve 22 disposed at a junction of the auxiliary heat supply pipe 21 and the heat exchange pipe 112, for controlling a flow rate of the heat transfer medium flowing therethrough;

and an auxiliary heat source 23 for heating the heat transfer medium flowing through the auxiliary heat supply pipe 21.

Optionally, the auxiliary heat source comprises at least one of the following thermal energy devices: solar panel, solar water heater, electric heater, boiler.

The auxiliary heating pipe can be communicated with the heat exchange pipe through a non-detachable structure, and in practical application, the opening degree of the auxiliary valve is adjusted according to the use requirement, so that whether the heat transfer medium flows through the auxiliary heating pipe or not and the flow of the auxiliary heating pipe or not can be controlled.

The auxiliary heat source in the embodiment of the application can heat the heat-conducting medium flowing through the auxiliary heat supply pipe so as to improve the heat energy of the heat-conducting medium flowing through and further improve the vaporization efficiency of liquid nitrogen. And whether the heat-conducting medium flows through the auxiliary heat supply pipe or not can be flexibly controlled by adjusting the auxiliary valve, so that the application flexibility of the system is improved.

Optionally, the at least one secondary heating pipe 21 communicates with the heat exchange pipe 112 via a removable port structure 41.

In the embodiment of the application, the auxiliary heating pipe and the heat exchange pipe are connected through the detachable port structure, so that the number of the heat exchange pipes connected into the system can be increased or decreased according to actual needs, and equipment can be replaced and maintained conveniently.

The two ends of the auxiliary heat supply pipe can be provided with detachable port structures, and the detachable port structures can be communicated with heat exchange pipes in the heat exchange box and also can be communicated with guide pipes among a plurality of heat exchange pipes. The connection part of the heat exchange tube or the flow guide tube and the detachable port structure is provided with an auxiliary valve.

Through the system that this application embodiment provided, when high-power operation, can come to provide more heat energy to the heat-conducting medium who flows through increasing supplementary heating pipe, improve heat exchange efficiency, and then improve the efficiency of liquid nitrogen vaporization.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 3, the system further includes:

and the valve control module 31 is electrically connected with the auxiliary valve 22 and is used for controlling the opening degree of the auxiliary valve 22 according to the working condition of the heat exchange type liquid nitrogen vaporization system.

In practical applications, the valve control module is used to adjust the opening of the auxiliary valve according to the operating condition of the system, for example, the following three conditions can be classified:

when the heat exchange box can satisfy the heat supply demand, turn off all auxiliary valves, alright keep apart auxiliary heating pipe and auxiliary heat source, avoid the heat waste of auxiliary heat source.

When the heat exchange box can not meet the heat supply requirement but does not need all heat energy of the auxiliary heat source to participate in circulation, the auxiliary valve can be opened, the heat transfer medium is heated by the auxiliary heat source, and the heated heat exchange medium enters the heat exchange tube through the flow guide tube. The number of the opened auxiliary valves can be adjusted according to actual conditions, and the opening degree of the opened auxiliary valves can also be adjusted.

When all heat energy of the auxiliary heat source is required to participate in circulation, the auxiliary valve is controlled to be fully opened, so that the auxiliary heat source can heat the heat-conducting medium flowing through, and heat supply is realized.

Through the system that this application embodiment provided, can be according to the nimble auxiliary valve of adjusting of operating mode actual demand to the heat that the heat-conducting medium that the adjustment was flowed through carried, and then the efficiency of adjustment liquid nitrogen vaporization.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 4, the system further includes:

and the heat preservation liquid storage tank 41 is used for storing a heat conduction medium when the heat exchange type liquid nitrogen vaporization system is stopped, and introducing the stored heat conduction medium into the heat exchange tube when the heat exchange type liquid nitrogen vaporization system is operated.

Through the system that this application embodiment provided, can slow down heat-conducting medium's heat loss with heat preservation liquid storage pot storage heat-conducting medium when the system is stopped to move, realize heat energy storage, avoid the energy extravagant. The heat transfer medium with certain heat energy can be supplied to the system at the initial operation stage of the system, and the heat energy is fully utilized.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 5, the system further includes:

the electric heat conversion module 51 is communicated with the heat preservation liquid storage tank 41 and is used for converting the heat energy of the heat conduction medium stored in the heat preservation liquid storage tank 41 into electric energy;

and the storage battery module 52 is electrically connected with the electrothermal conversion module 51 and is used for storing the electric energy converted by the electrothermal conversion module.

When the system is not used for a long time, the heat-conducting medium is stored only by the heat-preservation liquid storage tank, so that the heat energy loss is difficult to avoid. The electric heat conversion module that this embodiment provided can be with heat energy conversion electric energy, and the electric energy that the conversion obtained is deposited in storage battery module and is stored, and the length is long in the extension energy storage, and it is extravagant to reduce the energy. At the beginning of the system operation, the stored electrical energy of the battery module can be used to heat the heat transfer medium.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 6, the flow direction of the heat transfer medium in the heat exchange tube is opposite to the flow direction of the heat source material in the first inner cavity.

The heat exchange tubes are usually made of a material with a good heat conduction performance, and a heat source material with a high temperature conducts heat energy to a heat conduction medium with a low temperature through the heat exchange tubes, so that the temperature of the heat conduction medium is increased. At the same time, the temperature of the heat source material also drops due to the heat energy dissipation.

If the flow direction of the heat source material in the first interior chamber is the same as the flow direction of the heat transfer medium in the heat exchange tubes, then the temperature of the heat transfer medium introduced into the heat exchange tubes gradually increases and the temperature of the heat source material gradually decreases in the heat exchange box. Thereby making the temperature of the heated heat transfer medium led out from the outlet of the heat exchange box approach the temperature of the heat source material near the outlet. Even more, the temperature of the derived heat transfer medium is equal to the temperature of the heat source material in the vicinity of the outlet. This allows the heat transfer medium to flow through the heat exchange tubes adjacent the outlet without increasing in temperature and even transferring thermal energy to the heat source material adjacent the outlet, resulting in a reverse transfer of thermal energy.

In the scheme provided by the embodiment of the application, the flowing direction of the heat transfer medium in the heat exchange tube is opposite to the flowing direction of the heat source material in the first inner cavity, so that the heat can be transferred from the heat source material to the heat transfer medium, and the heat energy loss is reduced. For example, referring to FIG. 6, the heat transfer medium introduced into the heat exchange tubes 112 flows from the inlet to the outlet, and the heat source material introduced into the first chamber flows from the outlet to the inlet. Therefore, the heat transfer medium at the outlet of the heat exchange tube exchanges heat with the heat source material with higher temperature, and the heat loss of the heat transfer medium in the process of being led out from the outlet is avoided.

In practical application, the control of the flow direction of the heat source material can be realized by controlling the positions of the inlet and the outlet of the first inner cavity. Typically, the heat exchange tubes are relatively fixed in position in the heat exchange box and the heat transfer medium flows along the heat exchange tubes. This embodiment provides the solution that the inlet of the first inner chamber is provided near the outlet of the heat exchange tube and the outlet of the first inner chamber is provided near the inlet of the heat exchange tube, so as to realize the flow direction of the heat transfer medium opposite to the flow direction of the heat source material.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 7, the number of the heat exchange boxes is multiple, and the outlets of the multiple heat exchange boxes are communicated with the second inner cavity 121 of the gasification box, so as to introduce the heated heat transfer medium into the second inner cavity 121.

In the system shown in fig. 7, 3 heat exchange boxes, shown as 11a, 11b and 11c, respectively, are included, and in practical applications, a greater or lesser number of heat exchange boxes may be included in the system. In fig. 7, the heat transfer medium flows into the 3 heat exchange boxes respectively under the driving action of the liquid driving pump, and the heat transfer medium heated by the 3 heat exchange boxes is led out to the second inner cavity of the gasification box through the outlet. In practice, a plurality of heat exchange cabinets may also be connected in other ways. For example, the heat transfer medium heated by the heat exchange tank 11a may be introduced into the heat exchange tank 11b, heated again, and then discharged to the vaporization tank through the outlet.

Through the system that this application embodiment provided, can heat-transfer medium through a plurality of heat exchange case, the system can insert a plurality of heat exchange cases in a flexible way to be adapted to practical application scene, be favorable to satisfying practical application demand.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 8, a plurality of heat exchange boxes are sequentially connected to the gasification box in the order of the temperature of the heat source material from low to high.

In the system shown in fig. 8, 3 heat exchange cabinets, shown as 11a, 11b and 11c, respectively, are included. The temperature of the heat source material introduced into the heat exchange box 11a is the lowest, the temperature of the heat source material introduced into the heat exchange box 11b is intermediate, and the temperature of the heat source material introduced into the heat exchange box 11c is the highest. Under the drive of the liquid driving pump 13, the heat transfer medium is sequentially heated by the 3 heat exchange boxes, the temperature gradually rises, and finally the heat transfer medium is led out to the second inner cavity of the gasification box at a higher temperature.

Through the scheme that this application embodiment provided, arrange in order a plurality of heat exchange boxes according to the temperature of the heat source material that lets in order, make the temperature of the heat-conducting medium that flows through rise gradually, avoid because the heat-conducting medium temperature is high and the heat source material temperature is low and lead to the condition of heat to the heat source material conduction, make full use of heat energy of heat source material.

In order to further explain the scheme, the following scheme is specifically explained by taking solar equipment as an auxiliary heat source and taking hydraulic oil, lubricating oil, cylinder liner water and engine exhaust gas as heat source materials:

the scheme adopted by the system is shown in figure 9, and comprises a lubricating oil heat exchanger system, a hydraulic oil heat exchanger system, a cylinder sleeve water heat exchanger system, an exhaust gas heat exchanger system, an evaporator system, an auxiliary heat supply control system, a driving module, an auxiliary heat supply system, a heat preservation liquid storage tank system, an electric heat conversion control system, an electric heat conversion system and a storage battery unit.

The main working flow of the system is as follows:

when the equipment is not in operation, the auxiliary heating system can automatically store heat in the liquid in the auxiliary heating system, and the redundant heat is stored in the heat preservation liquid storage tank system. If the equipment is not used for a long time, the electric heat conversion control system can automatically adjust the electric heat conversion system, convert the heat of the liquid into electric energy and store the electric energy in the storage battery unit, and therefore reasonable utilization of the energy is achieved.

In the primary stage of equipment operation, when equipment does not need large displacement work, the auxiliary heating system does not need to intervene, and the waterway evaporation system only needs to walk a small circle. The water path circulates from a lubricating oil heat exchanger system, a hydraulic oil heat exchanger system, a cylinder sleeve water heat exchanger system, an exhaust gas heat exchanger system, an evaporator system, an auxiliary heat supply control system and a driving module.

In the middle stage of equipment operation, when equipment needs medium displacement work, the auxiliary heating system starts to intervene, and partial water path liquid can be introduced into the auxiliary heating system through the adjustment of the auxiliary heating control system, so that the collected solar heat can be fully absorbed. The size circulation of the waterway evaporation system is started simultaneously, and the auxiliary heat supply control system can automatically adjust the flow entering the auxiliary heat supply system according to the temperature of the liquid.

At the advanced stage of equipment operation, the maximum displacement of equipment demand works, at the moment, the auxiliary heat supply control system can automatically control the electric ball valve to be automatically closed, the waterway evaporation system completely enters a large circulation, and the waterway circulation is realized by a lubricating oil heat exchanger system, a hydraulic oil heat exchanger system, a cylinder sleeve water heat exchanger system, a waste gas heat exchanger system, an evaporator system, an auxiliary heat supply control system, a driving module, an auxiliary heat supply system and a driving module. When the large-displacement work is carried out, the electric energy stored in the early stage can be converted into heat energy through the electric heat conversion system, and heat is provided for the conversion from liquid nitrogen to nitrogen.

In addition, when the solar auxiliary heating system cannot normally finish large-displacement operation in special weather, the solar auxiliary equipment can completely provide heat energy by the electric heating conversion system, and sufficient heat energy is provided for conversion from liquid nitrogen to nitrogen.

Because solar energy is a renewable resource, compared with conventional energy, the solar energy has the characteristics of inexhaustibility and the like, and only a sunlight solar energy auxiliary heating system is needed to perform photo-thermal conversion. In the middle east or other areas with sufficient heat, the advantages of the areas can be fully utilized, and the system has better economical operation for so much heat energy. Compared with conventional liquid nitrogen equipment, the system provided by the embodiment reduces the complexity and noise of the system, reduces the operation cost, breaks through the inherent heat source form, ensures that the heat source is not single any more, is more environment-friendly and economical, realizes energy ladder application, and improves the energy utilization rate. According to the scheme, through the change of the heat source form, the source of environmental pollution is reduced, the national energy-saving and emission-reducing policy is responded strongly, and the positive effect on relieving the temperature rise is achieved. Compared with the traditional coal and gas burning functional mode, the solar auxiliary heating mode is safer and more reliable, the traditional fuel oil burning heating mode and the electric heating mode have the risks of easy explosion, electric shock and the like, and the solar auxiliary heating system does not have the risks.

In order to solve the problems in the prior art, an embodiment of the present application further provides a heat exchange type liquid nitrogen vaporization method, which can be applied to the heat exchange type liquid nitrogen vaporization system described in any of the above embodiments, as shown in fig. 10, the method includes:

s101: the temperature of the heat source material introduced into the first inner cavity of the heat exchange box is obtained.

In practical application, the temperature of the introduced heat source material can be monitored by arranging a temperature sensor on the first inner cavity or a pipeline for introducing the heat source material into the first inner cavity.

S102: and when the temperature of the heat source material is higher than that of the heat transfer medium, controlling the outlet of the heat exchange box to be communicated with the second inner cavity of the gasification box.

The temperature of the heat transfer medium may be a preset temperature, for example, 25 ℃ at normal temperature, and may be preset according to the temperature of the area where the system is located. Alternatively, a temperature sensor is provided in a container storing the heat transfer medium to acquire the temperature of the heat transfer medium in real time. Alternatively, a temperature sensor is provided at the inlet of the heat exchange box to obtain the temperature of the heat transfer medium before the heat exchange tubes of the heat exchange box are introduced.

In this step, when the temperature of the heat source material is higher than the temperature of the heat transfer medium, it indicates that the heat source material can transfer heat energy to the heat transfer medium by means of heat conduction, so as to heat the heat transfer medium. At this moment, the outlet of the heat exchange box can be controlled to be communicated with the second inner cavity of the gasification box through the instruction, so that the heat exchange tube is communicated with the second inner cavity, and the heated heat transfer medium is led out of the second inner cavity conveniently.

S103: and introducing the heat transfer medium into the heat exchange tubes of the heat exchange box so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated, wherein the heated heat transfer medium is used for heating liquid nitrogen to obtain nitrogen.

And after the heat exchange tube is controlled to be connected with the second inner cavity, introducing a heat transfer medium into the heat exchange tube so that the heat source material heats the heat transfer medium in a heat exchange mode. Because the heat exchange box is controlled to be communicated with the gasification box when the temperature of the heat source material is higher than that of the heat conduction medium, the heat exchange box can be ensured to heat the heat conduction medium flowing through, the heat is prevented from being reversely transferred to the heat source material, and the heat conduction medium is ensured to have heat energy for vaporizing the liquid nitrogen.

Based on the method provided in the foregoing embodiment, optionally, as shown in fig. 11, when the number of the heat exchange boxes is multiple, the foregoing step S101 includes:

s201: the temperatures of the heat source materials introduced into the first inner cavities of the plurality of heat exchange boxes are respectively obtained.

In practical application, the temperature of the heat source material introduced into the first inner cavity of each heat exchange box can be obtained by arranging a temperature sensor at the inlet of the first inner cavity of each heat exchange box. Alternatively, the temperature sensor may be disposed in the first interior cavity.

Wherein, the step S102 includes:

s202: and controlling the plurality of heat exchange boxes to be sequentially connected to the second inner cavity of the gasification box in the sequence from low temperature to high temperature of the heat source material.

In this step, the heat exchange boxes are sorted according to the temperature of the heat source material introduced into the plurality of heat exchange boxes, so that the heat exchange box with the highest temperature of the heat source material is directly connected with the gasification box, and the lower the temperature of the heat source material is, the greater the number of the heat exchange boxes spaced from the gasification box is.

Wherein, the step S103 includes:

s203: and introducing the heat transfer medium into the heat exchange tubes of the heat exchange boxes with the lowest temperature into which the heat source material is introduced, so that the heated heat transfer medium is introduced into the second inner cavity of the gasification box after the heat source material of the plurality of heat exchange boxes connected in sequence is heated.

Wherein the temperature of any heat source material introduced into the heat exchange box is higher than that of the unheated heat transfer medium. In this embodiment, the heat transfer medium is introduced into the heat exchange tubes of the heat exchange box having the lowest temperature, and the heat transfer medium can be preliminarily heated by the heat source material having the lowest temperature. The primarily heated heat transfer medium flows through the heat exchange boxes with higher temperature in sequence, so that the temperature of the derived heat transfer medium can reach the highest. In the process that the heat conduction medium flows through the heat exchange boxes, the condition that the temperature of the heat conduction medium is higher than that of the heat source material is avoided, so that reverse heat transfer is avoided, and waste of heat energy is avoided.

Based on the solution provided by the above embodiment, optionally, as shown in fig. 12, when the heat exchange type liquid nitrogen vaporization system includes at least one auxiliary heat source, the method further includes:

s301: and respectively acquiring the temperature of the heat transfer medium in the heat exchange tubes of the heat exchange boxes and the temperature of the heat transfer medium heated by the auxiliary heat source.

In practical applications, the temperature of the heat transfer medium in the heat exchange tube may be measured by a temperature sensor provided at the heat exchange tube in advance. Optionally, because the number of the heat exchange tubes is large, an infrared camera can be used for shooting an image of an area where the heat exchange tubes are located, and the temperature of the heat transfer medium in the heat exchange tubes is determined according to the infrared imaging parameters. The temperature of the heat transfer medium heated by the auxiliary heat source may be measured by a temperature sensor.

S302: and determining a first exchange tube and a second exchange tube which are used for communicating the auxiliary heat source in the heat exchange tubes of the heat exchange boxes, wherein the temperature of the heat transfer medium in the first exchange tube is lower than that of the heat transfer medium heated by the auxiliary heat source, and the temperature of the heat transfer medium in the second exchange tube is equal to or higher than that of the heat transfer medium heated by the auxiliary heat source.

After the temperatures of the heat transfer media in the plurality of heat exchange tubes are obtained, the obtained temperatures may be sorted, and the heat exchange tubes corresponding to the temperatures are divided into heat exchange tubes having a higher temperature than the heat transfer medium heated by the auxiliary heat source and heat exchange tubes having a lower temperature than the heat transfer medium heated by the auxiliary heat source.

Optionally, the obtained temperatures are sorted, the exchange tube corresponding to the lower temperature adjacent to the temperature of the heated heat transfer medium is determined as a first exchange tube, and the exchange tube corresponding to the higher temperature adjacent to the temperature of the heated heat transfer medium is determined as a second exchange tube.

S303: and controlling the auxiliary heat source to be communicated with the first heat exchange tube through a first auxiliary heat supply tube and to be communicated with the second heat exchange tube through a second auxiliary heat supply tube so as to introduce the heat transfer medium in the first heat exchange tube into the auxiliary heat source and lead the heat transfer medium heated by the auxiliary heat source out of the second heat exchange tube.

In this step, an auxiliary heat source is connected to the system according to the first exchange tube and the second exchange tube determined in the above step to assist in heating the heat transfer medium flowing through. The heat transfer medium in the first heat exchange tube has lower temperature, and the heat transfer medium in the second heat exchange tube has higher temperature, so that the heat energy of the auxiliary heat source can be fully utilized after the auxiliary heat source is connected, namely, the auxiliary heat source heats the heat transfer medium with lower temperature, and the heated heat transfer medium is introduced into the second heat exchange tube and is converged with the heat transfer medium with isothermal temperature or higher temperature, so that the heat transfer medium circulating in the system has more heat.

In practical applications, the auxiliary heat source in the embodiment of the present application may be connected to both ends of one heat exchange box, or may be connected to both ends of a plurality of heat exchange boxes. For example, between the heat exchange medium inlet of one heat exchange tank and the heat exchange medium outlet of the other heat exchange tank.

In order to solve the problems in the prior art, an embodiment of the present application further provides an electronic device 400, as shown in fig. 13, including:

an obtaining module 401 for obtaining a temperature of a heat source material introduced into a first inner cavity of a heat exchange box;

a first control module 402, which controls the outlet of the heat exchange box to communicate with the second inner cavity of the gasification box when the temperature of the heat source material is higher than the temperature of the heat transfer medium;

and a second control module 403, which introduces the heat transfer medium into the heat exchange tubes of the heat exchange box, so as to guide the heated heat transfer medium out of the outlet after the heat source material is heated, where the heated heat transfer medium is used for heating liquid nitrogen to obtain nitrogen gas.

Through the electronic equipment that this application embodiment provided, can control heat exchange formula liquid nitrogen vaporization system and connect, guarantee that the temperature of the heat source material in the heat exchange box is higher than heat-transfer medium, make heat energy conduct to heat-transfer medium direction from the heat source material, avoid reverse heat conduction heat to cause the energy extravagant, effectively heat-transfer medium, make the heat-transfer medium after the heating have the heat energy that makes the liquid nitrogen vaporization.

Preferably, an embodiment of the present invention further provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the above-mentioned embodiment of the control method for vaporizing heat-exchange liquid nitrogen, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned embodiment of the heat exchange type liquid nitrogen vaporization control method, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (12)

1. A heat exchange liquid nitrogen vaporization system, comprising:

a heat exchange box provided with a first inner cavity, a heat exchange tube and an outlet; wherein the content of the first and second substances,

the first inner cavity is used for introducing a heat source material to heat;

the heat exchange tube is arranged in the first inner cavity, is not communicated with the first inner cavity and is used for introducing a heat transfer medium so as to lead out the heated heat transfer medium to the outlet after the heat source material is heated;

the gasification box is provided with a second inner cavity and a gasification pipe; wherein the content of the first and second substances,

the second inner cavity is used for introducing a heat transfer medium led out from an outlet of the heat exchange box;

the gasification pipe is arranged in the second inner cavity, is not communicated with the second inner cavity and is used for introducing liquid nitrogen, so that the heat transfer medium led out from the outlet of the heat exchange box heats the liquid nitrogen in the second inner cavity, and then nitrogen gas vaporized by the liquid nitrogen through heating is led out from the gasification pipe;

and the liquid driving pump is communicated with the heat exchange tube and is used for driving the heat transfer medium to flow in the heat exchange tube and the second inner cavity.

2. The system of claim 1, wherein the number of the heat exchange boxes is plural, and the outlets of the plural heat exchange boxes are communicated with the second inner cavity of the gasification box to introduce the heated heat transfer medium into the second inner cavity.

3. The system of claim 2, wherein a plurality of the heat exchange tanks are connected to the gasification tank in order of a low temperature to a high temperature of the heat source material.

4. The system of any one of claims 1 to 3, further comprising:

at least one secondary heat supply pipe in communication with the heat exchange pipe;

the auxiliary valve is arranged at the joint of the auxiliary heat supply pipe and the heat exchange pipe and is used for controlling the flow of the heat transfer medium flowing through;

and the auxiliary heat source is used for heating the heat conduction medium flowing through the auxiliary heat supply pipe.

5. The system of claim 4, wherein the auxiliary heat source comprises at least one of the following thermal energy devices:

solar panel, solar water heater, electric heater, boiler.

6. The system of claim 4, further comprising:

and the valve control module is electrically connected with the auxiliary valve and used for controlling the opening of the auxiliary valve according to the working condition of the heat exchange type liquid nitrogen vaporization system.

7. The system of claim 4, wherein the at least one secondary heating pipe communicates with the heat exchange pipe through a removable port structure.

8. The system of any one of claims 1 to 3, further comprising:

and the heat preservation liquid storage tank is used for storing a heat conduction medium when the heat exchange type liquid nitrogen vaporization system is stopped, and introducing the stored heat conduction medium into the heat exchange tube when the heat exchange type liquid nitrogen vaporization system is operated.

9. The system of claim 8, further comprising:

the electric heat conversion module is communicated with the heat preservation liquid storage tank and is used for converting the heat energy of the heat conduction medium stored in the heat preservation liquid storage tank into electric energy;

and the storage battery module is electrically connected with the electric-heat conversion module and is used for storing the electric energy converted by the electric-heat conversion module.

10. The system according to any one of claims 1 to 3, wherein the flow direction of the heat transfer medium in the heat exchange tube is opposite to the flow direction of the heat source material in the first inner chamber.

11. The system of any one of claims 1 to 3, wherein the heat source material comprises at least one of:

hydraulic oil, lubricating oil, cylinder liner water and engine exhaust gas.

12. The system of any one of claims 1-3, wherein the displacement pump comprises a centrifugal pump or a progressive cavity pump.

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