Integrated horizontal condensing steam generator device and system

Abstract

The invention belongs to the field of condensation steam generators, and provides an integrated horizontal type condensation steam generator device and system which comprises a pipe box, a secondary refrigerant inlet, a secondary refrigerant outlet, a liquid blocking sub-device, a shell, a steam outlet, a base, a cold water inlet, a liquid level stabilizing and monitoring sub-device, a heat transfer pipe, a supporting plate, a liquid homogenizing pipe and a partition plate. Heat exchange between cold water in the shell and a secondary refrigerant is achieved through the heat transfer pipe; the heat transfer pipes are arranged at unequal intervals, bubbles are discharged in time, and the heat exchange efficiency is improved; separation of steam and liquid drops is achieved through the liquid blocking sub-device, and the drying degree of the steam is improved; control over the liquid content in the shell is achieved through the liquid level stabilizing and monitoring sub-device, and the steam generation efficiency is improved; and uniform supply of cold water is achieved through the liquid homogenizing pipe, and the balance of the temperature in the shell and the heat exchange efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of condensing steam generators, and in particular to an integrated horizontal condensing steam generator device and system. Background Art

[0002] Steam is an important medium in industrial engineering heating, and steam generating devices are widely used in industrial production, electricity, heating and air-conditioning systems and other fields. At present, conventional separate steam generators are composed of heating devices, steam generating devices, condensate recovery systems, etc. Normal temperature water is first heated to a higher temperature by a heating device. No phase change occurs in this process, and the hot water temperature is higher than the steam temperature. The heated high-temperature hot water flashes out steam through a steam generating device. During this process, pressure difference and temperature difference are required, there is potential energy loss, and the energy utilization efficiency is not high. Flash evaporation requires a large flow rate and a large temperature difference as a driving force. The system needs to add a hot water circulation pump. The process is complex, the energy consumption is high, the loss is large, and the overall energy efficiency is poor. Focusing on the field of steam heat pumps, in conventional steam heat pump systems, steam is obtained by flash evaporation of hot water at the outlet of the condenser, but the flash evaporation process sacrifices pressure energy, resulting in heat energy loss, and the system has low thermal efficiency.

[0003] In the conventional separate steam generating device provided by the prior art, water does not undergo phase change during the heating process, the comprehensive heat transfer coefficient is low, and the heat exchange area is large; there is potential energy loss in the flash steam production process, the energy utilization efficiency is not high, the overall performance is poor, and the system has many components, a complex structure, and a high space occupancy rate. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an integrated horizontal condensing steam generator device and system, which realizes heat exchange between cold water and coolant in the shell through heat transfer tubes; timely discharges bubbles by arranging the heat transfer tubes at unequal intervals to improve the heat exchange efficiency; separates steam and droplets through a liquid blocking sub-device to improve the dryness of the steam; controls the liquid content in the shell through a liquid level stabilization and monitoring sub-device to improve the steam generation efficiency; and realizes uniform supply of cold water through a liquid equalizing pipe to increase the temperature balance and heat exchange efficiency in the shell.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] An integrated horizontal condensing steam generator device, comprising: a pipe box, a refrigerant inlet, a refrigerant outlet, a liquid blocking sub-device, a shell, a steam outlet, a base, a cold water inlet, a liquid level stabilization and monitoring sub-device, a heat transfer tube, a support plate, a liquid equalizing tube and a partition;

[0007] The pipe box is arranged at the head and tail of the shell; the base and the cold water inlet are arranged at the lower side of the shell; the steam outlet is arranged at the upper side of the shell; the liquid level stabilization and monitoring sub-device is arranged at the outer side of the shell; the liquid level stabilization and monitoring sub-device is connected to the inside of the shell through a connecting pipe; the liquid blocking sub-device is arranged at the upper side of the inside of the shell; the heat transfer pipe is arranged at the inside of the shell; the support plate is provided with a plurality of holes; the support plate is provided with a plurality of holes; the heat transfer pipe is inserted into the holes of the support plate; the liquid equalizing pipe is arranged at the lower side of the inside of the shell; the partition is arranged at the inside of the pipe box;

[0008] The refrigerant inlet is used to input refrigerant medium into the heat transfer tube; the refrigerant outlet is used to output the refrigerant medium in the heat transfer tube; the cold water inlet is used to input low-temperature water into the shell; the heat transfer tube is used to provide heat to the low-temperature water and generate evaporating vapor; the liquid blocking sub-device is used to separate the droplets and target steam in the evaporating vapor, and control the target steam to be discharged through the steam outlet; the liquid level stabilization and monitoring sub-device is used to detect the liquid height inside the shell and control the water replenishment amount of the cold water inlet; the support plate is used to fix the heat transfer tube; the liquid equalizing pipe is used to control the uniform distribution of the low-temperature water; the partition is used to control the number of flow paths of the refrigerant medium.

[0009] Preferably, the calculation formula of the bubbles attached to the surface of the heat transfer tube is: Dd = f(Ts, P, δ, Ja*, ρ l , v , cp, Hfg, E0); Ts is water temperature; P is pressure; δ is the surface tension of water; Ja* is the Jacobian number of deformation; ρ l is the liquid density; ρ v is the gas density; cp l is the specific heat of liquid; Hfg is the latent heat of liquid evaporation; E0 is the Ottower number; Dd is the bubble detachment diameter; f() is the variable mapping relationship function.

[0010] Preferably, the heat transfer tubes are distributed as follows: the top distribution is more sparse than the bottom distribution.

[0011] Preferably, the basis for the liquid level stabilization and monitoring sub-device to control the water replenishment at the cold water inlet includes: the gas-liquid separation space height ratio ≥ 0.7, the gas-liquid separation time ≥ 0.4s and the kinetic energy density of the fluid per unit volume ≤ 7.

[0012] Preferably, the liquid blocking sub-device comprises: a curved plate and a straight plate;

[0013] The two straight plates are arranged inside the curved plate in an inverted eight-shaped structure; the curved plate is attached to the upper side of the inner part of the shell;

[0014] The bottom of the curved plate is provided with evenly distributed drainage holes; the curved plate and the inner wall of the shell and the straight plate and the inner wall of the curved plate both form flow holes; the flow holes are used to change the flow direction of the evaporating gas and separate the droplets in the evaporating gas; the drainage holes are used to control the droplets to flow back to the shell.

[0015] Preferably, liquid balancing holes are provided on the surface of the liquid balancing tube; and the liquid balancing holes are evenly distributed along the tube diameter direction of the liquid balancing tube.

[0016] Preferably, the installation positions of the coolant inlet and the coolant outlet include: the coolant inlet and the coolant outlet are both arranged on the pipe box at the shell head, and the coolant inlet and the coolant outlet are respectively arranged on the pipe boxes at the shell head and the tail.

[0017] Preferably, an integrated horizontal condensing steam generator system comprises: a steam generator module, an expansion valve module, a steam compressor module, a water supply pump module, an evaporator module and a heat pump compressor module;

[0018] The evaporator module is used to provide a heat source for a preset refrigerant medium; the heat pump compressor module is used to compress the refrigerant medium; the steam generator module is used to absorb the heat of the refrigerant medium to generate target steam; the expansion valve module is used to throttle and reduce the pressure of the refrigerant medium; the make-up water pump is used to provide low-temperature water to the steam generator module; and the steam compressor module is used to compress the target steam.

[0019] Preferably, the refrigerant medium includes: ammonia refrigerant and Freon.

[0020] The present invention discloses the following technical effects:

[0021] The present invention provides an integrated horizontal condensing steam generator device and system, which solves the problem of heat exchange through a heat transfer tube and realizes heat exchange between cold water and a coolant in a shell; solves the problem of excessive steam humidity through a liquid blocking sub-device and realizes separation of steam and liquid droplets; solves the problem of low steam generation efficiency through a liquid level stabilization and monitoring sub-device and realizes autonomous control of the liquid content in the shell; solves the problem of uneven temperature distribution of the liquid in the shell through a liquid equalizing pipe and realizes uniform supply of cold water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A structural diagram of an integrated horizontal condensing steam generator device provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the distribution of heat transfer pipes provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a liquid retaining sub-device provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a liquid equalizing hole provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of an integrated horizontal condensing steam generator system provided by an embodiment of the present invention;

[0028] Description of reference numerals:

[0029] 1-refrigerant inlet, 2-pipe box, 3-liquid blocking sub-device, 31-bent plate, 32-straight plate, 4-shell, 5-steam outlet, 6-base, 7-cold water inlet, 8-liquid level stabilization and monitoring sub-device, 9-heat transfer tube, 10-support plate, 11-liquid equalizing tube, 12-partition, 13-refrigerant outlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide an integrated horizontal condensing steam generator device and system, which realizes heat exchange between cold water and coolant in the shell through heat transfer tubes; timely discharges bubbles by arranging the heat transfer tubes at unequal intervals to improve the heat exchange efficiency; separates steam and droplets through a liquid blocking sub-device to improve the dryness of the steam; controls the liquid content in the shell through a liquid level stabilization and monitoring sub-device to improve the steam generation efficiency; and realizes uniform supply of cold water through a liquid equalizing pipe to increase the temperature balance and heat exchange efficiency in the shell.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Figure 1 The structure diagram of the integrated horizontal condensing steam generator device provided by the embodiment of the present invention is as follows: Figure 1 As shown, the present invention provides an integrated horizontal condensing steam generator device, including: a pipe box 2, a refrigerant inlet 1, a refrigerant outlet 13, a liquid blocking sub-device 3, a shell 4, a steam outlet 5, a base 6, a cold water inlet 7, a liquid level stabilization and monitoring sub-device 8, a heat transfer tube 9, a support plate 10, a liquid balancing tube 11 and a partition 12;

[0034] The pipe box 2 is arranged at the head and tail of the shell 4; the base 6 and the cold water inlet 7 are arranged at the lower side of the shell 4; the steam outlet 5 is arranged at the upper side of the shell 4; the liquid level stabilization and monitoring sub-device 8 is arranged at the outer side of the shell 4; the liquid level stabilization and monitoring sub-device 8 is connected to the inside of the shell 4 through a connecting pipe; the liquid blocking sub-device 3 is arranged at the upper side of the inside of the shell 4; the heat transfer pipe 9 is arranged inside the shell 4; the support plate 10 is provided with a plurality of holes; the heat transfer pipe 9 is inserted into the holes of the support plate 10; the liquid equalizing pipe 11 is arranged at the lower side of the inside of the shell 4; the partition plate 12 is arranged inside the pipe box 2;

[0035] The refrigerant inlet 1 is used to input the refrigerant medium into the heat transfer tube 9; the refrigerant outlet 13 is used to output the refrigerant medium in the heat transfer tube 9; the cold water inlet 7 is used to input low-temperature water into the shell 4; the heat transfer tube 9 is used to provide heat to the low-temperature water and generate evaporating gas; the liquid blocking sub-device 3 is used to separate the droplets and target steam in the evaporating gas, and control the target steam to be discharged through the steam outlet 5; the liquid level stabilization and monitoring sub-device 8 is used to detect the liquid height inside the shell 4 and control the water replenishment amount of the cold water inlet 7; the support plate 10 is used to fix the heat transfer tube 9; the liquid equalizing pipe 11 is used to control the uniform distribution of low-temperature water; the partition 12 is used to control the number of flow paths of the refrigerant medium.

[0036] Furthermore, the number of flow paths of the refrigerant medium increases by one with each additional partition 12.

[0037] Specifically, the calculation formula of the bubbles attached to the surface of the heat transfer tube 9 is: Dd = f(Ts, P, δ, Ja*, ρ l , v , cp, Hfg, E0); Ts is water temperature; P is pressure; δ is the surface tension of water; Ja* is the Jacobian number of deformation; ρ l is the liquid density; ρ v is the gas density; cp lis the specific heat of liquid; Hfg is the latent heat of liquid evaporation; E0 is the Ottower number; Dd is the bubble detachment diameter; f() is the variable mapping relationship function.

[0038] refer to Figure 2 , the pipe distribution of the heat transfer pipe 9 is as follows: the top distribution is more sparse than the bottom distribution.

[0039] Preferably, the basis for the liquid level stabilization and monitoring sub-device 8 to control the water replenishment of the cold water inlet 7 includes: the gas-liquid separation space height ratio ≥ 0.7, the gas-liquid separation time ≥ 0.4s and the kinetic energy density of the fluid per unit volume ≤ 7.

[0040] refer to Figure 3 , the liquid blocking sub-device 3 comprises: a curved plate 31 and a straight plate 32;

[0041] Two straight plates 32 are arranged inside the curved plate 31 in an inverted eight-shaped structure; the curved plate 31 is attached to the upper side of the inner part of the housing 4;

[0042] The bottom of the curved plate 31 is provided with evenly distributed drainage holes; the curved plate 31 and the inner wall of the shell 4 and the straight plate 32 and the inner wall of the curved plate 31 form flow holes; the flow holes are used to change the flow direction of the evaporating gas and separate the droplets in the evaporating gas; the drainage holes are used to control the droplets to flow back to the shell 4.

[0043] refer to Figure 4 The surface of the liquid balancing tube 11 is provided with liquid balancing holes; the liquid balancing holes are evenly distributed along the tube diameter direction of the liquid balancing tube 11.

[0044] Optionally, the installation positions of the refrigerant inlet 1 and the refrigerant outlet 13 include: the refrigerant inlet 1 and the refrigerant outlet 13 are both arranged on the pipe box 2 at the head of the shell 4, and the refrigerant inlet 1 and the refrigerant outlet 13 are respectively arranged on the pipe boxes 2 at the head and tail of the shell 4.

[0045] refer to Figure 5 , an integrated horizontal condensing steam generator system, comprising: a steam generator module, an expansion valve module, a steam compressor module, a water supply pump module, an evaporator module and a heat pump compressor module;

[0046] The evaporator module is used to provide a heat source for the preset refrigerant medium; the heat pump compressor module is used to compress the refrigerant medium; the steam generator module is used to absorb the heat of the refrigerant medium and generate target steam; the expansion valve module is used to throttle and reduce the pressure of the refrigerant medium; the make-up water pump is used to provide low-temperature water for the steam generator module; and the steam compressor module is used to compress the target steam.

[0047] Specifically, d is the outer diameter of the heat transfer tube 9 .

[0048] Optionally, the refrigerant medium includes: ammonia refrigerant and Freon.

[0049] Specifically, the system is a dual-phase heat conversion steam direct generation structure. In the steam generator, one side is the refrigerant exothermic phase change (gas → liquid) under vacuum environment, and the other side is the water endothermic phase change (liquid → gas). Both sides use the latent heat during phase change to quickly transfer heat. It has the following effects: the flash evaporation process is eliminated, steam is directly generated, and the pressure and temperature potential energy are recovered; during the heating process, the single-sided phase change of the cold and hot fluids is changed to a double-sided phase change, which improves the comprehensive heat transfer coefficient; the system components are reduced, the process complexity is reduced; and the overall energy efficiency of the steam generation device is improved.

[0050] Furthermore, in this embodiment, a liquid blocking structure is provided at an upper position inside the steam generator, and a relatively closed and large gas buffer space is formed below the steam outlet 5, thereby improving the situation where the steam carries liquid. The liquid blocking structure is composed of a curved plate 31 and two straight plates 32, and the two straight plates 32 are arranged in an inverted eight-shaped structure and placed inside the curved plate 31. The bottom of the curved plate 31 is provided with evenly distributed drainage holes, and the curved plate 31 and the inner wall of the shell 4 form flow holes, and the straight plate 32 and the inner wall of the shell 4 form flow holes. When the liquid-carrying steam passes through the liquid blocking structure, the flow direction is changed many times. After multiple liquid blocking, the liquid droplets entrained by the steam are basically removed, and the liquid droplets return to the inside of the shell 4 through the drainage holes of the curved plate 31.

[0051] Specifically, a liquid balancing pipe 11 capable of evenly dispersing water is provided at the cold water inlet 7, and liquid balancing holes arranged in a predetermined pattern are provided on the liquid balancing pipe 11. The liquid balancing holes are distributed along the radial direction of the liquid balancing pipe 11 and along the center line at a certain angle, and are unevenly distributed in the axial direction (including distribution position and hole size), so as to realize uniform liquid supply to the entire steam generator, avoid liquid concentration in a certain part, cause uneven liquid supply, and affect the overall heat exchange effect.

[0052] Furthermore, a liquid level monitoring and stabilizing mechanism is provided on the steam generator shell 4 to monitor the liquid level in real time so that the steam generator is kept full of liquid, and is linked with the water inlet pump to replenish water in time according to the steam evaporation rate.

[0053] Specifically, during the operation of the steam generator, cold water enters the bottom area of ​​the heat exchange tube bundle from the bottom, is continuously heated and evaporated on the outer surface of the heat exchange tube, and relies on its own gravity for natural convection and generates a large number of bubbles. The bubbles gather together to form an air film and adhere to the tube wall. In the upper area close to the liquid surface, the size and number of bubbles increase significantly. The cold water absorbs heat on the wall of the heat exchange tube and undergoes a phase change from liquid to gas. First, very small bubbles are formed on the wall of the heat exchange tube. During the upward movement, the bubbles continue to absorb heat, the evaporation amount increases, and the bubbles also grow. Finally, they fall off at the top of the heat exchange tube and form separate bubbles in the liquid. Bubbles from the bottom of the heat exchange tube will also combine with the newly generated small bubbles on the wall of the heat exchange tube to form large bubbles. The bubble detachment diameter is calculated by the Fritz formula and the deformed Jakob number introduced by Cole as the basis for the design of the heat exchange tube spacing. The calculation formula for the bubble detachment diameter is as follows:

[0054] Dd=f(Ts、P、δ、Ja*、ρ l , v 、cp l , Hfg, E0)

[0055] Where: Ts represents water temperature, P represents pressure, δ represents surface tension of water, Ja* represents Jacobian number of deformation, ρ l represents the liquid density, ρ v Indicates gas density, cp l represents the specific heat of the liquid, Hfg represents the latent heat of evaporation of the liquid, E0 represents the Ottower number, and Dd represents the bubble detachment diameter.

[0056] Furthermore, when the same spacing is used between the heat exchange tube bundles, the bubbles near the middle and upper heat exchange tubes cannot be discharged from the heat exchange tube area in time, resulting in deteriorated heat transfer. This embodiment divides the heat exchange tube bundle into multiple areas, and adopts different heat exchange tube spacings in different areas. The heat exchange tubes in the bottom area are densely arranged and the heat exchange tube spacing is small, while the heat exchange tubes in the upper area are sparsely arranged and the heat exchange tube spacing is large. In addition, air flow channels are left between the heat exchange tubes to allow bubbles to pass through the heat exchange tube bundle area faster, reducing the thermal resistance caused by the contact between the bubbles and the heat exchange tubes. For heat exchangers with different heat exchange capacities, the optimized structure of the tube bundle is different, refer to Figure 3 .

[0057] Preferably, for a full-liquid steam generator, the amount of water filled in the shell 4 has a greater impact on the working performance. The optimal liquid level data is obtained by referring to relevant literature. When the shell 4 is an ammonia refrigerant, the liquid level is controlled at 70-80% of the diameter of the shell 4, and when the refrigerant is Freon, the liquid level is controlled at 55-65% of the diameter of the shell 4. If the liquid level is too low, the effective heat exchange area of ​​the evaporator is reduced, and the heat transfer effect cannot be fully exerted. On the contrary, if the liquid level is too high, the outlet steam may be liquid-carrying. In view of the above problems, this embodiment proposes to use the gas-liquid separation space height ratio, gas-liquid separation time and ρv2 as evaluation indicators, control the numerical range of the three, and ensure that the liquid level of the steam generator is not too high or too low. Among them, ρv2 represents the kinetic energy density of the fluid per unit volume, which is the kinetic energy stored in the fluid. It is determined experimentally that the gas-liquid separation space height ratio ≥ 0.7, the gas-liquid separation time ≥ 0.4s, and ρv2 ≤ 7 are more suitable. The above judgment criteria will be different for different media and fluids. In the actual design process, numerical simulation and experiments are used to determine the optimal gas-liquid separation height.

[0058] Furthermore, the refrigerant enters the front tube box 2 through the refrigerant inlet 11, enters multiple groups of heat exchange tubes through the front tube box 2, and flows out through the refrigerant outlet 13 after sufficient heat exchange with the shell side cold water through multiple processes. The cold water enters the inner cavity of the shell 4 from the bottom of the shell 4, fully contacts and exchanges heat with the heat exchange tubes, absorbs the heat of the refrigerant and evaporates to form gas. The gas passes through the liquid retaining structure at the top of the shell 4 to separate the droplets, and is finally discharged from the steam outlet 5. The shell 4 steam generator designed in this embodiment can be used in an electric high-temperature steam heat pump to replace the condenser and flash tank of a conventional high-temperature heat pump, integrating the heat exchange function and the steam generation function. The hot water is directly vaporized in the steam generator to generate steam, avoiding the energy loss caused by the flash evaporation process, and has significant advantages in improving thermal efficiency and expanding the application range of heat pumps.

[0059] Specifically, this embodiment uses a two-phase heat exchange steam generator to replace the condenser and flash tank in the conventional steam heat pump system, so that one side of the steam generator is a heat release phase change (gas → liquid) of the refrigerant vapor in a vacuum environment, and the other side is a heat absorption phase change (liquid → gas). Hot water directly prepares steam, reduces heat loss during steam generation, and improves system thermal efficiency. The heat exchange process inside the steam generator is as follows:

[0060] 1) On the tube side, saturated refrigerant vapor flows through the inside of the heat exchange tube under the action of pressure difference, and performs single-phase flow heat exchange with the wall of the heat exchange tube. As the wall temperature continues to rise, the vapor molecules gradually condense into nuclei on the tube wall and spread into a film. By controlling the vapor flow rate, the vapor forms an annular flow in the tube, and the condensate spreads more evenly around the tube, with the vapor nucleus in the center. The heat exchange enters the liquid film convection boiling zone, effectively reducing the influence of gravity on the distribution of the liquid film. This process is carried out in a vacuum environment, which not only eliminates the influence of non-condensable gas on the condensation process, but also allows the condensation process to be carried out at a higher temperature, reducing the condensation thermal resistance, increasing the surface heat transfer coefficient, and enhancing the condensation heat exchange capacity.

[0061] 2) On the shell side, the hot water exchanges heat with the outer surface of the heat exchange tube. By controlling factors such as the wall superheat, the heat exchange is maintained in the nucleate boiling zone. In this state, the bubble disturbance is intense, which helps to break the thermal boundary layer, so that the heat transfer coefficient and heat flux density are maintained at a high level, and more heat is transferred under a given temperature difference. And due to the continuous formation, growth, jump and movement of saturated water vapor bubbles, a strong convection heat transfer is formed between the heating surface and the liquid. The nucleate boiling heat flux is the n (n ranges from 2 to 4) power relationship of the heat transfer temperature difference. In this state, the heat flux density of the heating surface is very large.

[0062] Furthermore, through the design of the heat exchanger and the control of operating conditions, the exothermic condensation process of the refrigerant vapor and the endothermic evaporation process of water in the two-phase heat conversion steam generator are maintained in a heat exchange state with a higher heat transfer coefficient to the maximum extent. Compared with conventional heat exchangers, the comprehensive heat transfer coefficient is greatly improved, the heat exchange area is reduced, the structural design is more compact, and the system is simpler, which helps to improve the overall performance of the high-temperature steam heat pump system.

[0063] The beneficial effects of the present invention are as follows:

[0064] The present invention realizes heat exchange between cold water and coolant in the shell through the heat transfer tube, thereby improving the heat exchange efficiency; realizes separation of steam and liquid droplets through the liquid blocking sub-device, thereby improving the dryness of the steam; realizes control of the liquid content in the shell through the liquid level stabilization and monitoring sub-device, thereby improving the steam generation efficiency; realizes uniform supply of cold water through the liquid equalizing pipe, increases the balance of the temperature at the bottom of the shell, can make the refrigerant in a supercooled state, and improves the heat exchange efficiency and the heat load of the condensing generator.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An integrated horizontal condensing steam generator device, characterized in that: include: Pipe box, coolant inlet, coolant outlet, liquid blocking sub-device, shell, steam outlet, base, cold water inlet, liquid level stabilization and monitoring sub-device, heat transfer tube, support plate, liquid balancing tube and partition; The pipe box is arranged at the head and tail of the shell; the base and the cold water inlet are arranged at the lower side of the shell; the steam outlet is arranged at the upper side of the shell; the liquid level stabilization and monitoring sub-device is arranged at the outer side of the shell; the liquid level stabilization and monitoring sub-device is connected to the inside of the shell through a connecting pipe; the liquid blocking sub-device is arranged at the upper side of the inside of the shell; the heat transfer pipe is arranged at the inside of the shell; the support plate is provided with a plurality of holes; the heat transfer pipe is inserted into the holes of the support plate; the liquid equalizing pipe is arranged at the lower side of the inside of the shell; the partition is arranged at the inside of the pipe box; The refrigerant inlet is used to input refrigerant medium into the heat transfer tube; the refrigerant outlet is used to output the refrigerant medium in the heat transfer tube; the cold water inlet is used to input low-temperature water into the shell; the heat transfer tube is used to provide heat to the low-temperature water and generate evaporating vapor; the liquid blocking sub-device is used to separate the droplets and target steam in the evaporating vapor, and control the target steam to be discharged through the steam outlet; the liquid level stabilization and monitoring sub-device is used to detect the liquid height inside the shell and control the water replenishment amount of the cold water inlet; the support plate is used to fix the heat transfer tube; the liquid equalizing pipe is used to control the uniform distribution of the low-temperature water; the partition is used to control the number of flow paths of the refrigerant medium.

2. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The calculation formula of the bubbles attached to the surface of the heat transfer tube is: Dd = f(Ts, P, δ, Ja*, ρ l , v , cp, Hfg, E0); Ts is water temperature; P is pressure; δ is the surface tension of water; Ja* is the Jacobian number of deformation; ρ l is the liquid density; ρ v is the gas density; cp l is the specific heat of liquid; Hfg is the latent heat of liquid evaporation; E0 is the Ottower number; Dd is the bubble detachment diameter; f() is the variable mapping relationship function.

3. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The heat transfer tubes are distributed in such a way that the top distribution is more sparse than the bottom distribution.

4. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The basis for the liquid level stabilization and monitoring sub-device to control the water replenishment of the cold water inlet includes: the gas-liquid separation space height ratio ≥ 0.7, the gas-liquid separation time ≥ 0.4s and the kinetic energy density of the fluid per unit volume ≤ 7.

5. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The liquid blocking sub-device comprises: a curved plate and a straight plate; The two straight plates are arranged inside the curved plate in an inverted eight-shaped structure; the curved plate is attached to the upper side of the inner part of the shell; The bottom of the curved plate is provided with evenly distributed drainage holes; the curved plate and the inner wall of the shell and the straight plate and the inner wall of the curved plate both form flow holes; the flow holes are used to change the flow direction of the evaporating gas and separate the droplets in the evaporating gas; the drainage holes are used to control the droplets to flow back to the shell.

6. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The surface of the liquid balancing tube is provided with liquid balancing holes; the liquid balancing holes are evenly distributed along the tube diameter direction of the liquid balancing tube.

7. The integrated horizontal condensing steam generator device according to claim 1, characterized in that: The installation positions of the coolant inlet and the coolant outlet include: the coolant inlet and the coolant outlet are both arranged on the pipe box at the shell head, and the coolant inlet and the coolant outlet are respectively arranged on the pipe boxes at the shell head and the tail.

8. An integrated horizontal condensing steam generator system, characterized in that: include: Steam generator module, expansion valve module, steam compressor module, water supply pump module, evaporator module and heat pump compressor module; The evaporator module is used to provide a heat source for a preset refrigerant medium; the heat pump compressor module is used to compress the refrigerant medium; the steam generator module is used to absorb the heat of the refrigerant medium and generate target steam; the expansion valve module is used to throttle and reduce the pressure of the refrigerant medium; the make-up water pump is used to provide low-temperature water to the steam generator module; and the steam compressor module is used to compress the target steam.

9. The integrated horizontal condensing steam generator system according to claim 8, characterized in that: The refrigerant medium includes: ammonia refrigerant and Freon.

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