Steam generator

Abstract

The present invention discloses a steam generator, including an evaporator, a first pipeline and a second pipeline, one end of the first pipeline is connected to the evaporator, a storage tank and a first pump body are arranged on the first pipeline, and the first pump body is located between the storage tank and the evaporator; the two ends of the second pipeline are respectively connected to the storage tank and the evaporator, and a first valve body is arranged on the second pipeline, and the first valve body is a one-way valve. A first medium enters from the first pipeline and is transported to the storage tank, and the first pump body transports the first medium in the storage tank to the evaporator through pumping action, so that the evaporator converts the first medium into steam, and the action of the first valve body prevents the reduction of air pressure in the evaporator from being transmitted to the storage tank, thereby ensuring the stability of the air pressure in the storage tank, and further avoiding the vaporization of superheated water in the storage tank, thereby ensuring that no bubbles are generated to enter the first pump body to cause cavitation.

Description

Technical Field

[0001] The invention relates to the technical field of steam preparation, in particular to a steam generator. Background Art

[0002] Steam is widely used in the pharmaceutical industry as a medium for disinfection and sterilization. It is used in the sterilization work of raw material preparation, liquid preparation, finished product preparation, etc. in the pharmaceutical process. A steam generator is a mechanical device that converts water medium into steam.

[0003] The traditional superheated circulation steam generator includes a storage tank, an evaporator and a pump body. The storage tank, the evaporator and the pump body are connected by pipelines. Purified water enters the storage tank through the pipeline, and then enters the evaporator for steam preparation after being pressurized by the pump body. When using steam, the output of steam will cause the air pressure in the evaporator to decrease, and the pressure in the storage tank will also decrease, causing the liquid temperature in the storage tank to instantly exceed the saturation temperature corresponding to the pressure in the storage tank. The liquid in the storage tank is vaporized, causing cavitation to the pump body, affecting the normal use of the steam generator. Summary of the invention

[0004] Based on this, it is necessary to provide a steam generator; the steam generator can reduce or avoid the impact of cavitation on the pump body, thereby ensuring the normal operation of the steam generator and ensuring the service life and equipment safety.

[0005] The technical solution is as follows:

[0006] One embodiment provides a steam generator, comprising:

[0007] Evaporator;

[0008] a first pipeline, one end of which is in communication with the evaporator, a material storage tank and a first pump body being arranged on the first pipeline, and the first pump body being located between the material storage tank and the evaporator;

[0009] A second pipeline, two ends of which are respectively connected to the storage tank and the evaporator, and a first valve body is provided on the second pipeline, and the first valve body is a one-way valve;

[0010] The first pipeline is used to transport the first medium to the storage tank, the first pump body is used to pump the first medium in the storage tank into the evaporator, and the evaporator is used to process the first medium into steam.

[0011] In the above-mentioned steam generator, the first medium (such as purified water) enters from the first pipeline and is transported to the storage tank. The first pump body transports the first medium in the storage tank to the evaporator through the pumping action, so that the evaporator converts the first medium into steam. During the preparation process, the first medium that has not formed steam in the evaporator flows back into the storage tank through the second pipeline. When the steam in the evaporator reaches the use condition, the first medium that enters the storage tank through the second pipeline is called superheated water; when the evaporator outputs steam to the use terminal, although the air pressure in the evaporator is reduced, the first valve body will prevent the reduction in air pressure in the evaporator from being transmitted to the storage tank, thereby ensuring the stability of the air pressure in the storage tank, thereby avoiding the instantaneous vaporization of the superheated water in the storage tank and causing cavitation risk to the first pump body.

[0012] The technical solution is further described below:

[0013] In one embodiment, the steam generator further includes a third pipeline, one end of which is connected to the evaporator, and the third pipeline is used to transport a second medium to the evaporator, and the second medium exchanges heat with the first medium in the evaporator to process the first medium into steam.

[0014] In one of the embodiments, a regulating valve is provided on the third pipeline, and the regulating valve can adjust the flow rate of the second medium entering the evaporator in the third pipeline according to the usage of steam.

[0015] In one embodiment, the steam generator further includes a preheating component, the preheating component is disposed on the first pipeline, the storage tank is located between the preheating component and the first pump body, and the preheating component is used to preheat the first medium entering the storage tank.

[0016] In one embodiment, the steam generator further includes a water supply pipeline, which is arranged in parallel with the first pipeline, one end of the water supply pipeline is located on a side of the preheating component away from the storage tank, and the other end of the water supply pipeline is located between the storage tank and the first pump body.

[0017] In one of the embodiments, a second valve body is provided on the water supply pipeline.

[0018] In one embodiment, the preheating assembly includes a first heat exchanger and a first heat exchange pipeline, the first heat exchanger is arranged on the first heat exchange pipeline, and the first heat exchanger is also arranged on the first pipeline, one end of the first heat exchange pipeline is connected to the first pipeline and the connection position is located between the storage tank and the evaporator;

[0019] A portion of the first medium output from the storage tank enters the first heat exchange pipeline and forms a third medium. The third medium exchanges heat with the first medium through the first heat exchanger to preheat the first medium. The third medium after heat exchange is transported to the other end of the first heat exchange pipeline.

[0020] In one embodiment, the preheating assembly includes a second heat exchanger and a second heat exchange pipeline, the second heat exchanger is arranged on the first heat exchange pipeline, and the second heat exchanger is also arranged on the first pipeline, and one end of the second heat exchange pipeline is connected to the evaporator;

[0021] The second medium forms a fourth medium after heat exchange in the evaporator and enters the second heat exchange pipeline. The fourth medium exchanges heat with the first medium through the second heat exchanger to preheat the first medium. The fourth medium after heat exchange is transported to the other end of the second heat exchange pipeline.

[0022] In one of the embodiments, the steam generator further includes an exhaust pipeline, one end of which is connected to the storage tank, and a third valve body is provided on the exhaust pipeline.

[0023] In one of the embodiments, a liquid level detector is provided in the storage tank, and the liquid level detector is used to detect the liquid level of the first medium in the storage tank;

[0024] Or / and the storage tank is also provided with a first pressure detector, and the first pressure detector is used to detect the air pressure and / or hydraulic pressure in the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0027] In addition, the drawings are not drawn in a 1:1 scale, and the relative sizes of various elements are drawn only as examples in the drawings and are not necessarily drawn in true scale.

[0028] Figure 1 A schematic diagram of the arrangement of a steam generator in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the arrangement of the storage tank in the embodiment.

[0030] Notes on the attached drawings:

[0031] 100, evaporator; 110, second pressure detector; 210, first pipeline; 211, storage tank; 212, first pump body; 213, liquid level detector; 214, first pressure detector; 215, second pump body; 220, second pipeline; 221, first valve body; 230, third pipeline; 231, regulating valve; 240, water supply pipeline; 241, second valve body; 250, first heat exchange pipeline; 251, first heat exchanger; 252, fourth valve body; 260, second heat exchange pipeline; 261, second heat exchanger; 262, fifth valve body; 270, exhaust pipeline; 271, third valve body. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] Please refer to Figure 1 and Figure 2 , an embodiment provides a steam generator, including an evaporator 100, a first pipeline 210 and a second pipeline 220. Wherein:

[0035] like Figure 1 In the illustrated embodiment, the evaporator 100 is used to prepare the first medium (such as purified water) transported by the first pipeline 210 into steam, and the prepared steam is supplied through the outlet F.

[0036] like Figure 1 and Figure 2 As shown, one end of the first pipeline 210 is connected to the evaporator 100 , and a storage tank 211 and a first pump body 212 are provided on the first pipeline 210 , and the first pump body 212 is located between the storage tank 211 and the evaporator 100 .

[0037] like Figure 1In the embodiment shown, the first pipeline 210 is used to transport purified water. The purified water enters the first pipeline 210 through the inlet B, then reaches the storage tank 211, and then reaches the evaporator 100 under the pressure boosting effect of the first pump body 212. Figure 1 From the perspective of FIG. 1 , purified water enters the evaporator 100 through the upper end of the evaporator 100 to be processed into steam in the evaporator 100 .

[0038] like Figure 1 As shown, two ends of the second pipeline 220 are respectively connected to the storage tank 211 and the evaporator 100 , and a first valve body 221 is provided on the second pipeline 220 , and the first valve body 221 is a one-way valve.

[0039] like Figure 1 In the illustrated embodiment, the left end of the second pipeline 220 is connected to the storage tank 211, and the right end of the second pipeline 220 is connected to the bottom end of the evaporator 100. A first valve body 221 is provided on the second pipeline 220 to prevent the pressure change in the evaporator 100 from affecting the pressure in the storage tank 211 by opening and closing.

[0040] In the steam generator, a first medium (such as purified water) enters and is transported to a storage tank 211 from a first pipeline 210. A first pump body 212 transports the first medium in the storage tank 211 to an evaporator 100 through a pumping action, so that the evaporator 100 converts the first medium into steam. During the preparation process, the first medium that has not formed steam in the evaporator 100 flows back into the storage tank 211 through a second pipeline 220. When the steam in the evaporator 100 reaches the use condition, the first medium that enters the storage tank 211 through the second pipeline 220 becomes superheated water. When the evaporator 100 outputs steam to a use terminal, although the air pressure in the evaporator 100 decreases, the first valve body 221 will prevent the decrease in air pressure in the evaporator 100 from being transmitted to the storage tank 211, thereby ensuring that the air pressure in the storage tank 211 is stable, thereby avoiding the vaporization of the superheated water in the storage tank 211, and thus ensuring that no bubbles are generated to enter the first pump body 212 to cause cavitation.

[0041] like Figure 1In the illustrated embodiment, purified water enters the first pipeline 210 through the inlet B, then enters the storage tank 211, and enters the evaporator 100 under the pressure boost of the first pump body 212. The first medium is prepared into steam through the evaporator 100 and output through the outlet F. The second pressure detector 110 is arranged at the outlet F of the evaporator 100 for outputting steam. When the steam generator just starts to work, the steam has not been prepared yet. At this time, the air pressure value detected by the second pressure detector 110 does not meet the standard, and the purified water in the evaporator 100 that has not been made into steam flows back into the storage tank 211 through the second pipeline 220, but the temperature of the purified water gradually increases. When the second pressure detector 110 detects that the pressure value meets the standard, it means that the steam has been prepared and can be used. At this time, the purified water flowing back into the storage tank 211 through the second pipeline 220 has been converted into superheated water. When steam is needed, after a portion of the steam is output through the outlet F, the air pressure in the evaporator 100 will decrease. At this time, since the storage tank 211 and the evaporator 100 are connected via the second pipeline 220, when the pressure in the evaporator 100 decreases, the pressure in the storage tank 211 will inevitably decrease, which will cause the superheated water in the storage tank 211 to vaporize, thereby further being pumped into the first pump body 212 and causing cavitation to the first pump body 212.

[0042] The first valve body 221 is a one-way valve, which can only allow the unevaporated first medium (such as purified water) in the evaporator 100 to flow back into the storage tank 211, but does not allow the gas in the evaporator 100 to enter the storage tank 211 through the first valve body 221.

[0043] With such a configuration, the first valve body 221 is always in an open state, which ensures, on the one hand, that the first medium can always flow back into the storage tank 211 through the second pipeline 220 during the operation of the steam generator, and on the other hand, ensures that when the pressure in the evaporator 100 changes, it will not affect the pressure in the storage tank 211 through the second pipeline 220, thereby avoiding the vaporization of the superheated water in the storage tank 211, thereby reducing the risk of cavitation.

[0044] In one embodiment, please refer to Figure 1 A second pump body 215 is provided on the first pipeline 210 , and the second pump body 215 and the first pump body 212 are respectively located on opposite sides of the storage tank 211 .

[0045] like Figure 1 In the illustrated embodiment, the second pump body 215 is a booster pump for boosting the pressure of the first medium and pumping it into the storage tank 211 through the first pipeline 210 .

[0046] In one embodiment, please refer to Figure 1The steam generator further includes a third pipeline 230, one end of which is connected to the evaporator 100, and the third pipeline 230 is used to transport the second medium to the evaporator 100, and the second medium exchanges heat with the first medium in the evaporator 100 to process the first medium into steam.

[0047] like Figure 1 In the illustrated embodiment, the second medium (such as industrial steam) enters the third pipeline 230 through the inlet A. The third pipeline 230 is connected to the evaporator 100 to deliver the second medium into the evaporator 100. The second medium serves as a heat source in the evaporator 100. Through heat exchange between the second medium and the first medium, the second medium releases heat and the first medium absorbs heat, thereby evaporating the first medium to form steam.

[0048] In one embodiment, please refer to Figure 1 The third pipeline 230 is provided with a regulating valve 231, and the regulating valve 231 can adjust the flow rate of the second medium entering the evaporator 100 in the third pipeline 230 according to the usage of steam.

[0049] like Figure 1 In the illustrated embodiment, the regulating valve 231 is disposed on the third pipeline 230 to regulate the flow rate of the second medium entering the evaporator 100 through the third pipeline 230. When the outlet F does not output steam, in order to ensure the pressure balance in the steam generator, the regulating valve 231 can be adjusted down or closed to avoid too much second medium entering the evaporator 100; and when the outlet F is used to output steam, the regulating valve 231 can be opened normally to allow the second medium to enter the evaporator 100 normally.

[0050] In one embodiment, the regulating valve 231 is a proportional regulating valve 231, which can set a corresponding regulating ratio according to the amount of steam used (i.e., the output amount or whether steam is used) to control the flow rate of the second medium entering the evaporator 100 through the third pipeline 230.

[0051] In one embodiment, please refer to Figure 1 The steam generator further includes a preheating component, which is disposed on the first pipeline 210 . The storage tank 211 is located between the preheating component and the first pump body 212 . The preheating component is used to preheat the first medium entering the storage tank 211 .

[0052] In one embodiment, the preheating assembly is located between the second pump body 215 and the storage tank 211 .

[0053] In one embodiment, please refer to Figure 1The steam generator also includes a water supply pipeline 240, which is arranged in parallel with the first pipeline 210, one end of the water supply pipeline 240 is located on the side of the preheating component away from the storage tank 211, and the other end of the water supply pipeline 240 is located between the storage tank 211 and the first pump body 212.

[0054] like Figure 1 In the illustrated embodiment, when steam is prepared and can be used at any time, the first medium in the storage tank 211 is superheated water. When the current of the first pump body 212 decreases, it indicates that the pressure in the storage tank 211 has fluctuated, so that water is replenished through the water replenishment pipeline 240 to reduce the temperature of the superheated water passing through the first pump body 212, thereby avoiding cavitation of the first pump body 212 and playing a protective role.

[0055] In one embodiment, please refer to Figure 1 The water supply pipeline 240 is provided with a second valve body 241 .

[0056] Optionally, the second valve body 241 is a diaphragm valve, which is opened or closed according to actual needs to replenish water for the first medium entering the first pump body 212 to achieve cooling.

[0057] In one embodiment, please refer to Figure 1 The preheating component includes a first heat exchanger 251 and a first heat exchange pipeline 250. The first heat exchanger 251 is arranged on the first heat exchange pipeline 250. At the same time, the first heat exchanger 251 is also arranged on the first pipeline 210. One end of the first heat exchange pipeline 250 is connected to the first pipeline 210 and the connection position is located between the storage tank 211 and the evaporator 100.

[0058] A portion of the first medium (superheated water at this time) output from the storage tank 211 enters the first heat exchange pipeline 250 and forms a third medium. The third medium exchanges heat with the first medium through the first heat exchanger 251 to preheat the first medium. The third medium after heat exchange is transported to the other end of the first heat exchange pipeline 250.

[0059] Furthermore, if Figure 1 As shown, the connection position between one end of the first heat exchange pipeline 250 and the first pipeline 210 is located between the first pump body 212 and the evaporator 100 .

[0060] like Figure 1In the illustrated embodiment, the superheated water pumped out by the first pump body 212 can be called concentrated water (i.e., the third medium), which enters the first heat exchanger 251 to exchange heat with the purified water that has just entered the steam generator through the first pipeline 210 to preheat the purified water, and then is discharged from the outlet C through the other end of the first heat exchange pipeline 250. Part of the concentrated water is discharged to ensure the ion concentration in the evaporator 100 and reduce the risk.

[0061] It should be noted that: during the operation of the steam generator, the first medium (purified water) needs to be input through outlet B in the initial stage. When the steam in the evaporator 100 reaches the use condition but is not taken, it can be operated through the circulation between the evaporator 100 and the storage tank 211. At this time, outlet B can be closed, and when the first medium needs to be replenished after the steam is taken, outlet B can be opened and preheated through the preheating component to make full use of the system heat source. It will not be repeated.

[0062] Furthermore, if Figure 1 As shown, a fourth valve body 252 is provided on the first heat exchange pipeline 250 .

[0063] The fourth valve body 252 can be opened and closed according to different working conditions to preheat the purified water, which will not be described in detail.

[0064] Specifically, the fourth valve body 252 may be a diaphragm valve.

[0065] In one embodiment, please refer to Figure 1 The preheating component includes a second heat exchanger 261 and a second heat exchange pipeline 260. The second heat exchanger 261 is arranged on the first heat exchange pipeline 250. At the same time, the second heat exchanger 261 is also arranged on the first pipeline 210. One end of the second heat exchange pipeline 260 is connected to the evaporator 100.

[0066] The second medium forms a fourth medium after heat exchange in the evaporator 100 and enters the second heat exchange pipeline 260 . The fourth medium exchanges heat with the first medium through the second heat exchanger 261 to preheat the first medium. The fourth medium after heat exchange is transported to the other end of the second heat exchange pipeline 260 .

[0067] like Figure 1 In the illustrated embodiment, the second medium (such as industrial steam) forms condensate after heat exchange with the first medium in the evaporator 100. The condensate flows out of the evaporator 100 through the second heat exchange pipeline 260 and exchanges heat with the first medium in the second heat exchanger 261 to preheat the first medium. Thereafter, the condensate of the industrial steam reaches the other end of the second heat exchange pipeline 260 after preheating the first medium and is discharged through the outlet D.

[0068] Furthermore, if Figure 1 As shown, a fifth valve body 262 is provided on the second heat exchange pipeline 260 .

[0069] Optionally, the fifth valve body 262 is a steam trap.

[0070] The combined arrangement of the first heat exchanger 251 and the second heat exchanger 261 fully utilizes the waste heat of the system and reduces the overall energy consumption.

[0071] In one embodiment, the second heat exchanger 261 is a double tube sheet heat exchanger, which has higher heat exchange efficiency than a traditional coil heat exchanger.

[0072] Optionally, at least two second heat exchangers 261 may be provided, and at least two second heat exchangers 261 are arranged in series on the first pipeline 210 and the second heat exchange pipeline 260 to better preheat the first medium, fully recover the preheat, and reduce the impact of the inlet temperature of the first medium on the equilibrium state of the entire steam generator system.

[0073] In one embodiment, please refer to Figure 1 The second heat exchanger 261 is located between the first heat exchanger 251 and the storage tank 211 .

[0074] The first medium (such as purified water) is preheated by the first heat exchanger 251 and then preheated by the second heat exchanger 261 before entering the storage tank 211 to fully utilize the system waste heat for preheating.

[0075] In one embodiment, please refer to Figure 1 and Figure 2 The steam generator further includes an exhaust pipeline 270 , one end of which is in communication with the storage tank 211 , and a third valve body 271 is disposed on the exhaust pipeline 270 .

[0076] like Figure 1 In the illustrated embodiment, the other end of the exhaust pipeline 270 is connected to the other end of the first heat exchange pipeline 250 . When the third valve body 271 is opened, the gas in the storage tank 211 reaches the outlet C through the exhaust pipeline 270 and is discharged.

[0077] The third valve body 271 is provided to realize automatic discharge according to the pressure difference between the generated steam and the material storage tank 211 , so as to further ensure the pressure stability in the material storage tank 211 .

[0078] Optionally, the third valve body 271 is a diaphragm valve.

[0079] In one embodiment, please refer to Figure 1 and Figure 2A liquid level detector 213 is provided in the storage tank 211 , and the liquid level detector 213 is used to detect the liquid level of the first medium in the storage tank 211 .

[0080] The liquid level detector 213 can detect the current liquid level in the storage tank 211 to determine whether the amount of the first medium meets the requirement. The liquid level detector 213 can also monitor the current liquid level in the storage tank 211 in real time.

[0081] Furthermore, the liquid level detector 213 is a mechanical liquid level float detector.

[0082] In one embodiment, please refer to Figure 1 and Figure 2 The storage tank 211 is also provided with a first pressure detector 214 , and the first pressure detector 214 is used to detect the air pressure and / or hydraulic pressure in the storage tank 211 .

[0083] The first pressure detector 214 can monitor the pressure in the storage tank 211 in real time under different operating conditions.

[0084] Optionally, both the first pressure detector 214 and the second pressure detector 110 are pressure transmitters.

[0085] In one embodiment, please refer to Figure 1 , the non-condensable gas in the evaporator 100 is discharged through the outlet E. A one-way valve may be provided at the outlet E as required.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A steam generator, characterized in that: include: Evaporator; a first pipeline, one end of which is in communication with the evaporator, a material storage tank and a first pump body being arranged on the first pipeline, and the first pump body being located between the material storage tank and the evaporator; A second pipeline, two ends of which are respectively connected to the storage tank and the evaporator, and a first valve body is provided on the second pipeline, and the first valve body is a one-way valve; The first pipeline is used to transport the first medium to the storage tank, the first pump body is used to pump the first medium in the storage tank into the evaporator, and the evaporator is used to process the first medium into steam; A preheating component, wherein the preheating component is disposed on the first pipeline, the material storage tank is located between the preheating component and the first pump body, and the preheating component is used to preheat the first medium entering the material storage tank; A water supply pipeline, the water supply pipeline is arranged in parallel with the first pipeline, one end of the water supply pipeline is located on a side of the preheating component away from the storage tank, and the other end of the water supply pipeline is located between the storage tank and the first pump body; The preheating component includes a first heat exchanger and a first heat exchange pipeline, the first heat exchanger is arranged on the first heat exchange pipeline, and the first heat exchanger is also arranged on the first pipeline, one end of the first heat exchange pipeline is connected to the first pipeline and the connection position is located between the storage tank and the evaporator; a part of the first medium output from the storage tank enters the first heat exchange pipeline and forms a third medium, the third medium exchanges heat with the first medium through the first heat exchanger to preheat the first medium, and the third medium after heat exchange is transported to the other end of the first heat exchange pipeline.

2. The steam generator according to claim 1, characterized in that: The steam generator further includes a third pipeline, one end of which is connected to the evaporator. The third pipeline is used to transport a second medium to the evaporator. The second medium exchanges heat with the first medium in the evaporator to process the first medium into steam.

3. The steam generator according to claim 2, characterized in that: The third pipeline is provided with a regulating valve, and the regulating valve can adjust the flow rate of the second medium entering the evaporator in the third pipeline according to the usage of steam.

4. The steam generator according to claim 1, characterized in that: A second valve body is arranged on the water supply pipeline.

5. The steam generator according to claim 2, characterized in that: The preheating assembly includes a second heat exchanger and a second heat exchange pipeline, the second heat exchanger is arranged on the first heat exchange pipeline, and the second heat exchanger is also arranged on the first pipeline, and one end of the second heat exchange pipeline is connected to the evaporator; The second medium forms a fourth medium after heat exchange in the evaporator and enters the second heat exchange pipeline. The fourth medium exchanges heat with the first medium through the second heat exchanger to preheat the first medium. The fourth medium after heat exchange is transported to the other end of the second heat exchange pipeline.

6. The steam generator according to claim 5, characterized in that: A fifth valve body is disposed on the second heat exchange pipeline.

7. The steam generator according to claim 1, characterized in that: A fourth valve body is disposed on the first heat exchange pipeline.

8. The steam generator according to claim 7, characterized in that: The fourth valve body is a diaphragm valve.

9. The steam generator according to any one of claims 1 to 8, characterized in that: The steam generator further comprises an exhaust pipeline, one end of which is in communication with the material storage tank, and a third valve body is disposed on the exhaust pipeline.

10. The steam generator according to claim 9, characterized in that A liquid level detector is provided in the storage tank, and the liquid level detector is used to detect the liquid level of the first medium in the storage tank; Or / and the storage tank is also provided with a first pressure detector, and the first pressure detector is used to detect the air pressure and / or hydraulic pressure in the storage tank.

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