Energy gradient configuration system adopting differential pressure power generation and ejector combination

Abstract

The utility model discloses a differential pressure power generation and ejector combined energy gradient configuration system, which is characterized in that the front end of a first steam path is communicated with a pre-configuration steam source, a first pipeline valve is arranged on the first steam path, a differential pressure power generation device is connected behind the first pipeline valve, and a post-configuration steam source outlet of the differential pressure power generation device is led to steam utilization equipment; the front end of the second steam path is communicated with a pre-configuration steam source, a second pipeline valve is arranged on the second steam path, a first steam ejector is connected behind the second pipeline valve, and a post-configuration steam source outlet of the first steam ejector is led to steam utilization equipment; and a branch communicated with the first steam ejector is arranged on a pipeline between the configured steam source outlet of the first steam path and the steam using equipment. Under the condition that a new steam source is not introduced, various steam sources are formed through differential pressure power generation and application of the steam ejector, the new steam source presents different gradients, and the problem of energy waste caused by lack of gradient means for a simple or single steam source is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of energy gradient utilization and differential pressure power generation, and in particular to an energy gradient configuration system that uses a combination of differential pressure power generation and ejectors. Background Technology

[0002] Currently, people are using energy more efficiently and with greater precision. As a carrier of traditional energy, steam's tiered energy utilization has become an important task and challenge. In many industries, steam is used as a heat source to heat other working fluids in processes to obtain stable thermal energy for various production operations. The thermal energy utilization of steam systems needs to be fully utilized step-by-step according to energy grade: high-energy steam should be used at higher levels, low-energy steam at lower levels, and temperature and pressure should be matched. Tiered energy utilization, comprehensive utilization, and refined application to different workstation scenarios are crucial. To more effectively utilize steam in production, most companies are improving equipment to further enhance market competitiveness and energy conservation and emission reduction efforts.

[0003] In industry, steam is needed in many scenarios, but the steam source cannot always be perfectly tailored to each application. Sometimes, there is only one steam source, serving different applications. Even within a single application, the requirements for the steam source vary. For example, when steam heats air, the air temperature may range from 30°C to 200°C, corresponding to steam saturation pressures of approximately 0.004 MPa to 1.55 MPa. In actual industrial applications, without other energy sources to optimize the process, only steam sources above 1.55 MPa can be used. If other applications require even higher steam pressures, boilers and other steam supply equipment will provide steam at even higher pressures. Although the phase change saturation enthalpy of steam sources at different pressures is not significantly different, or in other words, their heat release capacity is comparable, their work-generating capacity varies greatly. When steam is divided into stages, the pressure difference between the different stages has the capacity to generate electricity.

[0004] In practical applications, different steam sources are typically configured only when the energy gradient is exceptionally large. This is especially true for small and medium-sized industrial enterprises, which often lack the capacity to invest in multiple steam sources, leading to wasted energy production capacity when using a single source. The primary reason for this is the lack of methods for energy gradient management, particularly for single energy sources. In today's world, where energy is increasingly precious and the dual-carbon goals remain a long and arduous journey, the rational and gradient-based utilization of energy is of paramount importance. Therefore, finding a method for gradient management of steam energy, especially single-parameter steam energy, and applying it to practical engineering products has become extremely valuable. Thus, this technology proposes a solution based on the above background, striving for good adjustability and cost-effectiveness. Utility Model Content

[0005] The purpose of this invention is to provide an energy gradient configuration system that combines differential pressure power generation and injectors, thereby solving the energy waste problem caused by the lack of gradient methods for simple or single steam sources in the prior art.

[0006] The technical solution of this utility model is:

[0007] An energy gradient configuration system employing a combination of differential pressure power generation and an ejector is characterized by: comprising a first steam path and a second steam path; the first steam path is connected to a pre-configuration steam source at its front end, and a first pipeline valve is provided on the first steam path, after which a differential pressure power generation device is connected, with the steam source outlet of the differential pressure power generation device leading to the steam-consuming equipment; the second steam path is connected to a pre-configuration steam source at its front end, and a second pipeline valve is provided on the second steam path, after which a first steam ejector is connected, with the steam source outlet of the first steam ejector leading to the steam-consuming equipment; a branch path connected to the first steam ejector is provided on the pipeline between the steam source outlet of the first steam path and the steam-consuming equipment.

[0008] The steam source before configuration enters the differential pressure power generation device through the first pipeline valve. After generating electricity in the differential pressure power generation device, it forms a low-pressure steam source after configuration 1, which is then discharged and enters the next process. Part of the steam source before configuration enters the first steam ejector through the second pipeline valve and is drawn into the steam source after configuration 1 to form a new steam source after configuration 2. The pressure of the steam source after configuration 2 is lower than that of the steam source before configuration but higher than that of the steam source after configuration 1, and then it enters the next process.

[0009] The pre-configuration steam source is divided into many parts, which are connected to multiple parallel steam circuits. These multiple parallel steam circuits are further combined with a differential pressure power generation device or a steam ejector, or both, to further synthesize or form a new configured steam source with different pressure parameters.

[0010] Multiple parallel steam circuits of the new configuration steam source with different pressure parameters are then interconnected by steam ejectors or differential pressure generators or a combination of both to form a new steam source with new pressure parameters.

[0011] There can also be multiple configuration front steam sources, each configuration front steam source forming multiple configuration rear steam sources, which are combined with configuration rear steam sources formed by other configuration front steam sources, through steam ejectors or differential pressure power generation devices or a combination of both, until the energy gradient distribution and usage requirements are met.

[0012] A single steam source is used to generate electricity through at least one differential pressure power generation device, producing depressurized steam. This depressurized steam is then connected in parallel with at least one steam ejector to generate at least three steam sources with different gradients, including the original steam source. We call this the "basic fission unit" of the steam source. In practical applications, based on this basic fission unit, we can generate more types of steam sources according to energy gradient requirements, which will be described in detail in the subsequent invention concept section with reference to the accompanying drawings.

[0013] The pipelines and valves mentioned above refer to industrial steam or other pipelines and their accessories, and the valves are steam shut-off valves, pressure, temperature, flow regulating valves, and other types of valves selected according to the working conditions.

[0014] The aforementioned differential pressure power generation includes fluid prime movers such as axial turbines, radial turbines, and screw expanders that utilize gas pressure differences to generate electricity. The steam, after being depressurized and used for work, enters the next process stage to meet the needs of that stage. The steam source described is the steam source used in actual applications. After depressurization, it becomes even lower pressure steam. While the single steam source at the application site meets the requirements of subsequent processes in terms of energy, its diverse gradients (including temperature and pressure) do not meet the requirements for refined use. For example, although high-pressure steam meets the heating requirements, during the heating process on the cold side, the high-temperature section of the corresponding heating equipment is satisfied, but the energy gradient in the low-temperature section is too high. Therefore, the steam can be depressurized to perform work and then used to heat the low-temperature section.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention provides a method for configuring and utilizing energy gradients using a combination of differential pressure power generation and steam ejectors. This method can generate multiple steam sources from a single steam source without introducing new steam sources, by using differential pressure power generation and steam ejectors. The new steam sources present different gradients, thereby solving the problem of energy waste caused by the lack of multiple steam sources in practical applications.

[0017] This invention discloses an energy gradient configuration and utilization method that combines differential pressure power generation and ejectors. The differential pressure power generation converts the excess gradient energy in the energy gradient into power generation, thereby differentiating the energy gradient into different gradients to serve different energy consumption gradients, while the excess gradient energy is used to generate power.

[0018] This invention solves the problem of excessive use and investment in differential pressure power generation. The low-gradient steam generated by differential pressure power generation is then combined with steam ejectors. Since the investment in steam ejectors is much lower than that of differential pressure power generation equipment, yet still retains the function of regulating steam pressure gradients, this achieves a good cost-performance ratio of multiple gradients with low investment. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of a basic fission unit of this utility model.

[0022] Figure 3 This is a schematic diagram of another basic fission unit of this utility model.

[0023] Figure 4 This is a schematic diagram of a steam ejector. Detailed Implementation

[0024] An energy gradient configuration system employing a combination of differential pressure power generation and an ejector includes a first steam path and a second steam path. The first steam path is connected to a pre-configuration steam source at its front end and is equipped with a first pipeline valve. A differential pressure power generation device is connected downstream of the first pipeline valve, and the steam source outlet of the differential pressure power generation device leads to the steam-consuming equipment. The second steam path is also connected to the pre-configuration steam source at its front end and is equipped with a second pipeline valve. A first steam ejector is connected downstream of the second pipeline valve, and the steam source outlet of the first steam ejector leads to the steam-consuming equipment. A branch line connected to the first steam ejector is provided on the pipeline between the steam source outlet of the first steam path and the steam-consuming equipment.

[0025] The steam source before configuration enters the differential pressure power generation device through the first pipeline valve. After generating electricity in the differential pressure power generation device, it forms a low-pressure steam source after configuration 1, which is then discharged and enters the next process. Part of the steam source before configuration enters the first steam ejector through the second pipeline valve and is drawn into the steam source after configuration 1 to form a new steam source after configuration 2. The pressure of the steam source after configuration 2 is lower than that of the steam source before configuration but higher than that of the steam source after configuration 1, and then it enters the next process.

[0026] The pre-configuration steam source is divided into many parts, which are connected to multiple parallel steam circuits. These multiple parallel steam circuits are further combined with a differential pressure power generation device or a steam ejector, or both, to further synthesize or form a new configured steam source with different pressure parameters.

[0027] Multiple parallel steam circuits of the new configuration steam source with different pressure parameters are then interconnected by steam ejectors or differential pressure generators or a combination of both to form a new steam source with new pressure parameters.

[0028] There can also be multiple configuration front steam sources, each configuration front steam source forming multiple configuration rear steam sources, which are combined with configuration rear steam sources formed by other configuration front steam sources, through steam ejectors or differential pressure power generation devices or a combination of both, until the energy gradient distribution and usage requirements are met.

[0029] Specific implementation examples include: 1. Configuration of front steam source, 2.1-2.6. Pipeline valves, 3. Differential pressure power generation device, 4.1-4.5. Steam ejector, 5.1-5.6. Configuration of rear steam source, 6.1-6.7. Cascade steam consumption equipment.

[0030] Typically, the steam source 1 is configured with a single parameter. The steam source 1 enters the differential pressure power generation device 3 through the pipeline valve 2.1. After the steam does work to generate electricity, it is depressurized and becomes the steam source 5.1.

[0031] Another portion of the configuration's front steam source 1 draws in the configuration's rear steam source 5.1 through steam injector 4.1, forming the configuration's rear steam source 5.2. The pressure of 5.2 is lower than that of the configuration's front steam source 1, but higher than that of the configuration's rear steam source 5.1;

[0032] Another portion of the configuration involves the front steam source 1 drawing in the rear steam source 5.2 through the steam injector 4.2, forming the rear steam source 5.3. The pressure of the rear steam source 5.3 is lower than that of the front steam source 1, but higher than that of the rear steam source 5.2.

[0033] Another portion of the configuration is configured with the front steam source 1, which is then drawn into the configuration with the rear steam source 5.3 through the steam injector 4.3 to form the configuration with the rear steam source 5.4. The pressure of the configuration with the rear steam source 5.4 is lower than that of the configuration with the front steam source 1, but higher than that of the configuration with the rear steam source 5.3.

[0034] The partially configured steam source 5.4 is drawn into the configured steam source 5.1 through the steam ejector 4.4 to form the configured steam source 5.5. The pressure of the configured steam source 5.5 is lower than that of the configured steam source 5.4, but higher than that of the configured steam source 5.1.

[0035] After partial configuration, steam source 5.4 is drawn into steam source 5.2 through steam injector 4.5 to form steam source 5.6. The pressure of steam source 5.6 is lower than that of 5.4, but higher than that of steam source 5.2.

[0036] The ejector is a steam ejector, and its basic components and operation are as follows: Power steam A enters through steam chamber 11 and, through power steam nozzle 12, is drawn into suction chamber 13 by the extracted steam B. The steam is mixed in diffuser inlet section 14 (mixing chamber) and then ejected from diffuser outlet section 15 to form mixed steam C. Power steam A has the highest pressure, extracted steam B has the lowest pressure, and the pressure of mixed steam C is between that of A and B. It should be noted that the pressure of C can be adjusted by controlling the flow rates of A and B, as well as through other related means.

[0037] Cascade steam utilization equipment refers to equipment that utilizes steam at different gradients, most typically heat exchangers, which use steam to heat working fluids such as air and water. Due to the working principle of steam ejectors, the pressure of C can be regulated by controlling the flow rates of steam A and B, as well as other related methods. Therefore, even if another type of motive steam A1 has a pressure lower than A, and the suction steam B1 has a pressure lower than or equal to B, the pressure of the resulting new mixed steam C1 may still be higher than C. Therefore, the subsequent grading of cascade steam utilization equipment is based on the actual parameters of the newly generated steam source, rather than the parameters of the motive steam or suction steam before synthesis. Cascade steam utilization equipment can be new equipment or existing equipment can be added to or modified to utilize the method of this invention for cascade steam utilization.

[0038] The above describes generating electricity from a single steam source using at least one differential pressure power generation device, producing depressurized steam. This depressurized steam is then generated by connecting at least one steam ejector in parallel, resulting in at least three different steam sources, including the original steam source. This method can be further improved by using series, parallel, or a combination of both, employing steam ejectors, differential pressure power generation devices, or a combination of both, to obtain a more diversified configuration of multiple new steam sources. These new steam sources, along with the original steam source, can meet the steam gradient requirements of gradient steam-using equipment, while simultaneously generating electricity or performing work, achieving the goal of energy gradient configuration and utilization, and integrating energy, electricity, and work.

[0039] It is worth noting that, due to the adjustable output of the steam ejector, the tiered order of steam-using equipment is based on the parameters of the actual steam source supplied, rather than the order of high-pressure or low-pressure steam parameters before synthesis.

[0040] Furthermore, the steam is water vapor, or it may be other working fluids with the same or similar physical properties.

[0041] Furthermore, the ejector is a steam ejector, with adjustable flow rates of motive steam and intake steam, and adjustable parameters such as the pressure of exhaust steam. The steam ejector can also be an ejector using other working fluids with the same or similar physical properties.

[0042] Furthermore, the aforementioned differential pressure power generation devices are often axial turbines, mirror turbines, screw expanders, steam turbines, etc., in practical applications. However, they are not limited to the few types of fluid prime movers listed.

[0043] Furthermore, the basic fission units can be continuously combined and differentiated through series, parallel, or a combination of both. They can also be configured in series and parallel by steam ejectors after the steam source becomes diversified. These will not be listed here. No matter how complex the final diversity may be, it all originates from the basic fission unit.

[0044] Another scenario involves the following: In the basic fission unit, the pre-configuration steam source is entirely fed into a parallel differential pressure power generation unit and steam ejector via pipelines and valves. After generating electricity in the differential pressure power generation unit, the resulting lower-pressure post-configuration steam source (source 1) is entirely drawn into the steam ejector and mixed with the remaining pre-configuration steam source after entering the differential pressure power generation unit, forming post-configuration steam source (source 2). At this point, only post-configuration steam source 2 is discharged, with a pressure lower than the pre-configuration steam source but higher than post-configuration steam source 1, before proceeding to the next process. This method creates a new cascade of steam sources with excellent equipment cost-effectiveness.

[0045] The above describes an embodiment of the energy gradient configuration and utilization method of the present invention, which employs a combination of differential pressure power generation and an ejector. Specific features of the energy gradient configuration and utilization method of the present invention, such as shape, size, and position, can be specifically designed based on the functions of the features disclosed above, and these designs are all achievable by those skilled in the art. Furthermore, the disclosed technical features are not limited to combinations with other features; those skilled in the art can also make other combinations of the technical features according to the purpose of the present invention to achieve the purpose of the present invention.

Claims

1. An energy gradient configuration system employing a combination of differential pressure power generation and ejectors, characterized in that: It includes a first steam line and a second steam line. The first steam line is connected to the steam source before configuration at its front end. The first steam line is equipped with a first pipeline valve, and the differential pressure generator is connected after the first pipeline valve. The steam source outlet of the differential pressure generator after configuration leads to the steam-consuming equipment. The second steam line is connected to the steam source before configuration at its front end. The second steam line is equipped with a second pipeline valve, and the first steam ejector is connected after the second pipeline valve. The steam source outlet of the first steam ejector after configuration leads to the steam-consuming equipment. A branch line connected to the first steam ejector is provided on the pipeline between the steam source outlet of the first steam line after configuration and the steam-consuming equipment.

2. The energy gradient configuration system employing a combination of differential pressure power generation and ejectors as described in claim 1, characterized in that: The pre-configuration steam source is divided into many parts, which are connected to multiple parallel steam circuits. These multiple parallel steam circuits are further combined with a differential pressure power generation device or a steam ejector, or both, to further synthesize or form a new configured steam source with different pressure parameters.

3. The energy gradient configuration system employing a combination of differential pressure power generation and ejectors as described in claim 2, characterized in that: Multiple parallel steam circuits of the new configuration steam source with different pressure parameters are then interconnected by steam ejectors or differential pressure generators or a combination of both to form a new steam source with new pressure parameters.

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