Vibration-damping nozzle and direct-mixing condenser thereof

Abstract

The present application relates to heat exchanger technical field, provide a kind of vibration suppression nozzle and its direct mixing condenser, vibration suppression nozzle includes base and is located on the baffle and jet pipe of base;Jet pipe is located in the side of baffle, and the output end of jet pipe is towards baffle, to enable the working substance in jet pipe can always act on baffle;Wherein, jet pipe has injection angle α, and injection angle α and input flow in jet pipe are positively correlated.By the setting of jet pipe, on the one hand, in the case of having high driving pressure head large flow, liquid working substance can be reduced to impact baffle vertical component, weaken fluid excitation generated by liquid film;On the other hand, even in the case of low driving pressure head small flow, the vertical component of liquid working substance jet impact baffle can be increased by the adjustment of injection angle, so that liquid film is more easily generated.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more particularly to a vibration-damping nozzle and its direct-mixing condenser. Background Technology

[0002] In the field of heat exchanger technology, common condensers include surface condensers and direct-mix condensers. Among them, direct-mix condensers have many advantages such as high heat transfer efficiency, small equipment size, simple maintenance, no risk of heat exchange tube corrosion and no need for tube blockage, and are widely used in power, chemical and other fields.

[0003] Traditional direct-mix condensers condense steam by spraying cooling water onto baffles through nozzles, where the water forms a liquid film upon impact. However, this method of liquid film formation generates significant mechanical vibrations, which can lead to baffle deformation or even damage over time, affecting the equipment's cooling performance. Especially under high pressure and high flow rates, the vertical momentum component of the cooling water jet causes substantial energy loss and induces strong structural vibrations. Furthermore, to ensure the formation and full development of the liquid film, strict requirements are placed on the minimum cooling water pressure head. At lower driving pressure heads and smaller flow rates, the vertical impulse generated by the cooling water jet hitting the baffles is insufficient, making liquid film formation difficult. Summary of the Invention

[0004] This invention provides a vibration-damping nozzle and its direct-mixing condenser to solve the defects in the prior art, such as excessive mechanical vibration under high input flow rate and difficulty in forming a liquid film under low input flow rate.

[0005] This invention provides a vibration-damping nozzle and its direct-mixing condenser, comprising: a base and a baffle and a spray pipe disposed on the base;

[0006] The jet pipe is located on one side of the baffle, and the output end of the jet pipe faces the baffle, so that the working fluid in the jet pipe can always act on the baffle.

[0007] The jet pipe has a jet angle α, and the jet angle α is positively correlated with the input flow rate in the jet pipe.

[0008] According to the vibration damping nozzle provided by the present invention, a flow guiding component is further included. The flow guiding component is disposed on the baffle to cut the working fluid to form a working fluid linear flow.

[0009] According to the present invention, a vibration damping nozzle further includes a flow-receiving plate, which is disposed on the side where the baffle interacts with the jet pipe, and the surface of the flow-receiving plate has a hydrophobic vibration-absorbing layer, so that the working fluid in the jet pipe acts on the flow-receiving plate.

[0010] According to a vibration damping nozzle provided by the present invention, a diversion pipe is also connected to the base, the input end of the diversion pipe is connected to a working fluid distribution pipe, and the output end of the diversion pipe is connected to the spray pipe.

[0011] According to the present invention, a vibration damping nozzle is provided, wherein the jet pipe includes a flexible pipe and a nozzle, the nozzle being disposed at the output end of the flexible pipe, and the pipe body of the flexible pipe having the ability to flex and deform.

[0012] According to a vibration damping nozzle provided by the present invention, one end of the baffle is connected to the base, the other end of the baffle extends vertically upward freely, and the thickness of the baffle gradually decreases from the bottom end to the freely extending end.

[0013] According to a vibration damping nozzle provided by the present invention, the flow guiding assembly includes a plurality of flow guiding plates, which are spaced apart to create a liquid spray gap between adjacent flow guiding plates.

[0014] According to the present invention, the cross-section of the guide plate of the vibration damping nozzle is an arc-shaped structure.

[0015] According to the present invention, a vibration damping nozzle is provided, wherein the spray angle α is any angle between 10° and 70°.

[0016] The present invention also provides a direct mixing condenser having the vibration-damping nozzle described in any one of the above embodiments, comprising:

[0017] A housing, the housing defining an internal cavity;

[0018] The inner cavity is provided with a working fluid collection box, and the working fluid collection box is provided with a working fluid distribution chamber. The vibration damping nozzle is connected to the working fluid distribution chamber.

[0019] The housing has a steam inlet that communicates with the inner cavity, and the working fluid header is located directly below the steam inlet.

[0020] According to any of the above embodiments, this application has at least the following beneficial effects:

[0021] This invention provides a vibration-damping nozzle comprising a jet pipe and a baffle, wherein the jet angle α of the jet pipe is positively correlated with the input flow rate; that is, the jet angle α increases with increasing input flow rate and decreases with decreasing input flow rate. On the one hand, under conditions of high driving head and high flow rate, the vertical component of the liquid working fluid impacting the baffle can be reduced, weakening the fluid excitation generated by the liquid film; on the other hand, even under conditions of low driving head and low flow rate, the vertical component of the liquid working fluid impacting the baffle can be increased by adjusting the jet angle α, thereby making it easier to generate a liquid film. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a top view schematic diagram of the vibration damping nozzle provided by the present invention;

[0024] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A;

[0025] Figure 3 This is one of the schematic diagrams for adjusting the spray angle α of the vibration damping nozzle provided by the present invention;

[0026] Figure 4 This is the second schematic diagram of the vibration damping nozzle spray angle α adjustment provided by the present invention;

[0027] Figure 5 This is the third schematic diagram of the vibration damping nozzle spray angle α adjustment provided by the present invention;

[0028] Figure 6 This is a side view of the vibration damping nozzle provided by the present invention.

[0029] Figure 7 This is a schematic diagram of the direct-mix condenser provided by the present invention.

[0030] Figure label:

[0031] 1: Steam inlet; 2: Liquid working fluid inlet; 3: Working fluid header; 4: Working fluid distribution chamber; 5: Vibration damping nozzle; 501: Working fluid distribution pipe; 502: Diversion pipe; 503: Flexible pipe; 504: Nozzle; 505: Base; 506: Baffle; 507: Flow-receiving plate; 508: Guide plate; 509: Spray gap; 6: Condensate outlet. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "configuration" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0035] In the description of this specification, reference is made to the terms "specific embodiment," "some embodiments," "specific example," etc., which indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] It should be noted that the working fluid in this invention is a liquid working fluid, and the working fluid or liquid working fluid mentioned below can specifically be cooling water. Similarly, the cooling water mentioned below can also be equivalent to the working fluid or liquid working fluid.

[0037] The following is combined Figures 1-2 The present invention provides a vibration damping nozzle 5, which is configured for application in a condenser. It includes a base 505, a baffle 506 disposed on the base 505, and a spray pipe; the spray pipe is disposed on one side of the baffle 506, and the output end of the spray pipe faces the baffle 506, so that the working fluid in the spray pipe can always act on the baffle 506; wherein the spray pipe has a spray angle α, and the spray angle α is positively correlated with the input flow rate in the spray pipe.

[0038] The jet pipe has a tubular structure with an input and output end for the working fluid. The injection angle α is defined as the angle between the axis of nozzle 504 and the horizontal direction, and baffle 506 is perpendicular to the horizontal direction. When the injection angle α changes, the angle at which the liquid working fluid acts on baffle 506 in the jet pipe will change. This change in the angle at which the liquid working fluid acts on baffle 506 reduces the flow-induced vibration caused by the liquid working fluid impacting baffle 506 at high flow rates, thus reducing the vibration generated by the nozzle. At low flow rates, it effectively increases the impulse of the liquid working fluid impacting baffle 506, making it easier to form a liquid film. This solves the problems of excessive vibration at high flow rates and difficulty in forming a liquid film at low flow rates.

[0039] In the above embodiment, one end of the baffle 506 is connected to the base 505, and the other end of the baffle 506 extends vertically upward. The baffle 506 has a triangular structure, so that the thickness of the baffle 506 gradually decreases from the bottom to the top. Specifically, continuing as... Figure 1 As shown, there are two baffles 506, which are right-angled triangular structures. The two baffles 506 are located on both sides of the base 505. The jet pipe is located on the base 505 between the two baffles 506, and there are two corresponding jet pipes. The output ends of the two jet pipes are respectively directed towards the baffle 506 on their respective sides, so that the liquid working medium in the jet pipe can be sprayed onto the baffle 506 on their respective sides and form a liquid film on the baffle 506 on their respective sides.

[0040] It is understandable that, such as Figure 2 As shown, the spray angle α of the nozzle is positively correlated with the input flow rate, distinguishing this invention from traditional nozzles with a fixed spray angle. Those skilled in the art will understand that traditional nozzles with a fixed spray angle require a large input flow rate to form a liquid film, but this large flow rate generates strong mechanical vibrations, which obviously damage the fuel injection and affect its operation. In this invention, the spray angle α increases with the increase of the input flow rate, effectively reducing vibrations caused by excessive impulse and achieving a vibration suppression effect. Furthermore, even with a small input flow rate, by reducing the spray angle α, the impulse sprayed onto the baffle 506 can be increased, thereby enabling the formation of an effective liquid film even with a small input flow rate.

[0041] Some embodiments also include a baffle 507, which is disposed on the side where the baffle 506 interacts with the jet pipe, so that the working fluid in the jet pipe acts on the baffle 507.

[0042] Specifically, the flow-receiving plate 507 is embedded in the baffle 506, and the flow-receiving plate 507 serves as the flow-receiving zone for the liquid working medium inside the jet pipe, so as to receive the liquid working medium ejected from the jet pipe through the flow-receiving plate 507.

[0043] Furthermore, the surface of the guide vane 507 has a hydrophobic vibration-absorbing layer. Specifically, a long-lasting hydrophobic vibration-absorbing material is coated on the surface of the guide vane 507. On the one hand, it absorbs and attenuates the vibration of the liquid working fluid jet, and on the other hand, it reduces the shear force between the liquid film and the wall of the guide vane 507, enhances the stability of the liquid film, and maintains the film state of the liquid working fluid before contacting the flow guiding component.

[0044] Some embodiments also include a flow guiding component disposed on the baffle 506 to cut the working fluid to form a working fluid line flow. As can be foreseen from the above, when the liquid working fluid in the jet pipe acts on the baffle 506 or the flow-receiving plate 507, a liquid film can be formed on its surface. The liquid film is cut by the flow guiding component after passing through it, thereby forming a liquid line flow.

[0045] Understandably, the flow guiding component can cut the liquid film and form a liquid stream, which has a larger contact surface area compared to the liquid film. Specifically, when applied to a condenser, the liquid stream has a larger contact surface area with the input steam, thereby improving the heat exchange efficiency of the condenser.

[0046] In a specific example, the flow guiding assembly includes multiple guide plates 508, which are spaced apart to create spray gaps 509 between adjacent guide plates 508. The spray gaps 509 allow the liquid film to be ejected through these gaps, forming a liquid stream. That is, the liquid film is cut by the guide plates 508, and the cut liquid film is ejected through the multiple spray gaps 509. It is foreseeable that when the liquid film is ejected through the multiple spray gaps 509, it can form a linear liquid stream, which has a larger contact area than a liquid film. When applied to a condenser, this increases the contact area with the incoming steam, resulting in better condensation performance.

[0047] Furthermore, such as Figure 1 , Figure 6 As shown, a flow guiding assembly is positioned between two baffles 506, connecting the two baffles 506. The flow guiding assembly includes a flow guide plate 508 with an arc-shaped cross-section, and the end of the flow guide plate 508 curves upwards, meaning the end of the flow guide plate 508 closest to the liquid working medium and detached from the flow guide plate 508 curves upwards. This gives the spray gap 509 between the flow guide plates 508 an upwardly curved flow guiding direction, allowing the liquid working medium sprayed through the spray gap 509 to be sprayed upwards at a certain angle.

[0048] Understandably, on the one hand, when the flow guiding component connects the two baffles 506, it is connected to the baffles 506 at both ends through the flow guiding plate 508. This allows the flow guiding component to act as a stiffening structure for the baffles 506 connected at both ends, thus fixing the baffles 506 and suppressing flow-induced structural vibration, thereby enhancing the vibration suppression effect. On the other hand, by designing the flow guiding plate 508 as an arc-shaped structure, it can be placed below the input steam when applied to the condenser, thereby forming a counter-current with the input steam, enhancing the steam condensation heat transfer coefficient, and extending the contact time between the cooling water flow and the steam, thus enhancing the condenser heat exchange efficiency.

[0049] In some embodiments, a diversion pipe 502 is also connected to the base 505. The input end of the diversion pipe 502 is connected to a working fluid distribution pipe 501, and the output end of the diversion pipe 502 is connected to the jet pipe.

[0050] Specifically, the diversion pipe 502 is connected to the base 505, and the diversion pipe 502 is used to divert the incoming liquid working fluid, such as... Figure 1 As shown, the diversion pipe 502 has two diversion ports, which are respectively connected to two jet pipes, so that the two jet pipes can be connected through the diversion pipe 502 to realize the diversion of the input liquid working medium, and thus the liquid working medium can act on the baffle 506 on its respective side.

[0051] In a specific example, the jet pipe includes a flexible tube 503 and a nozzle 504. The nozzle 504 is located at the output end of the flexible tube 503, and the tube body of the flexible tube 503 has the ability to flex and deform.

[0052] The flexible tube 503 has the ability to flex and deform, which allows it to change its bending radius under a certain force. Specifically, when the flow rate of the liquid working medium entering the flexible tube 503 from the diversion tube 502 increases, the bending radius of the flexible tube 503 increases under the action of the centrifugal force of the liquid working medium. This causes the spray angle α of the nozzle 504 (defined as the angle between the axis of the nozzle 504 and the horizontal direction) to increase, thereby reducing the impulse of the liquid working medium sprayed onto the flow-receiving plate 507 or the baffle 506 at high flow rates, thus reducing the flow-induced vibration caused by the liquid working medium impacting the baffle 506 or the flow-receiving plate 507. Conversely, when the flow rate of the liquid working fluid entering the flexible tube 503 from the diversion pipe 502 decreases, the bending radius of the flexible tube 503 decreases under the action of the flexural restoring force of the flexible tube 503. This causes the spray angle α of the nozzle 504 (defined as the angle between the axial direction of the nozzle 504 and the horizontal direction) to decrease, which increases the impulse of the cooling water sprayed onto the anti-flow plate 507 at low flow rates, making it easier to form a coolant film.

[0053] It is understood that the flexible tube 503 of the present invention adjusts the spray angle α through its own tube structure. That is, the spray angle α of the flexible tube 503 naturally increases with the increase of the flow rate of the liquid working medium entering the flexible tube 503, and similarly, the spray angle α of the flexible tube 503 naturally decreases with the decrease of the flow rate of the liquid working medium entering the flexible tube 503. The entire process is adjusted through the tube's own structure and materials. Continuing as... Figure 1 As shown, its flexible tube 503 has a corrugated tube structure. Specifically, the flexible tube 503 can be a tube body with flexural deformation ability, such as a Pricas tube.

[0054] Specific examples, such as Figures 3-5 As shown, the flow rates input into the flexible tube 503 are controlled to be Q1, Q2, and Q3, where Q1 < Q2 < Q3. When the flow rate input into the flexible tube 503 is Q1, the spray angle of the flexible tube 503 is α1; when the flow rate input into the flexible tube 503 is Q2, the spray angle of the flexible tube 503 is α2; and when the flow rate input into the flexible tube 503 is Q3, the spray angle of the flexible tube 503 is α3. It can be seen that α1 < α2 < α3.

[0055] Furthermore, the spray angle α of the flexible tube 503 is controlled between 10° and 70°. Too large or too small a spray angle may cause the liquid working fluid to detach from the baffle 506 or the anti-flow plate 507, thus making it difficult for the liquid film to form.

[0056] It is understandable that the limitation on the spray angle α of the flexible tube 503 will also change with the angle of the baffle 506. It is foreseeable that the limitation in the above embodiment is based on the defined spray angle α. When the defined spray angle α is the horizontal direction perpendicular to the axis of the flexible tube 503, and the horizontal direction is perpendicular to the direction of the baffle 506, the spray angle is limited to between 10° and 70°. However, if the baffle 506 itself is not perpendicular to the horizontal direction, its limited angle will also change accordingly.

[0057] In some embodiments, one end of the baffle 506 is connected to the base 505, the other end of the baffle 506 extends vertically upward freely, and the thickness of the baffle 506 gradually decreases from the bottom end to the freely extending end.

[0058] Specifically, the baffle 506 has a triangular structure, with its thickness gradually decreasing from the bottom end (the end connected to the base 505) towards the free end. On the one hand, the non-uniform thickness structure can reduce the vibration excitation intensity generated by the liquid working fluid injection baffle 506 at the free extended end; on the other hand, it increases the stiffness of the baffle 506 and its connection strength with the base 505, suppressing the flow-induced vibration response of the baffle 506 and enhancing the vibration suppression effect. In a more specific embodiment, the baffle 506 has a right-angled triangular structure, with one right-angled side set towards the inside, so that the right-angled side faces the jet pipe, allowing the output end of the jet pipe to spray liquid working fluid onto the right-angled side. Correspondingly, a flow-receiving plate 507 is connected to the right-angled side, so that the sprayed liquid working fluid directly acts on the flow-receiving plate 507 to enhance the vibration suppression effect.

[0059] Furthermore, continue as Figure 1 As shown, the bottom end of baffle 506 is connected to the base 505, giving the bottom end of baffle 506 strong connection strength and thus enhancing the stability of the bottom structure of baffle 506. A flow guide component is connected to the free-extending end of baffle 506, connecting the free-extending ends of both sides of baffle 506. This connection also gives the free-extending ends of baffle 506 strong structural strength. Therefore, both the free-extending ends and the bottom end of baffle 506 have strong connection structural strength, further enhancing the vibration damping effect.

[0060] like Figure 7 As shown, the present invention also provides a direct-mix condenser, which is equipped with a vibration-damping nozzle 5 provided in any of the above embodiments. The direct-mix condenser includes a shell, which defines an inner cavity. A working fluid collector 3 is provided in the inner cavity, and a working fluid distribution chamber 4 is provided on the working fluid collector 3. The vibration-damping nozzle 5 is connected to the working fluid distribution chamber 4.

[0061] The casing has a steam inlet 1 at its upper end and a condensate outlet 6 at its lower end. A working fluid header 3 is located directly below the steam inlet 1, and a vibration-damping nozzle 5 is positioned on the header 3, directly facing the lower part of the steam inlet 1. As described above, the liquid working fluid within the vibration-damping nozzle 5 is ejected upwards through a flow-guiding assembly. This causes the direction of the ejected liquid working fluid to be opposite to the flow direction of the steam; that is, the ejected liquid working fluid and steam flow counter-currently. This enhances the steam condensation heat transfer coefficient and prolongs the contact time between the liquid working fluid and the steam, thereby improving the condenser's heat exchange efficiency and ultimately enhancing the condenser's heat exchange effect.

[0062] Specific examples continue as follows Figure 7As shown, the working fluid header 3 has a rectangular box structure with a liquid working fluid inlet 2 on one side. The working fluid header 3 is connected to the working fluid distribution chamber 4, and multiple vibration damping nozzles 5 are connected to both sides of the working fluid distribution chamber 4. The bottom end of the working fluid distribution chamber 4 is connected to the working fluid header 3, and the top end of the working fluid distribution chamber 4 extends freely. The size of the inner cavity of the working fluid distribution chamber 4 gradually narrows from the bottom end to the top end, which can increase the contact surface with the incoming steam and enhance the condensation effect of the liquid working fluid sprayed by the nozzles.

[0063] Through the above description of the embodiments, those skilled in the art can clearly understand that the flexible tube 503 in the nozzle of each embodiment can adaptively adjust the bending radius and the spray angle α of the nozzle 504 according to the flow rate of the liquid working fluid. This allows the present invention to, firstly, reduce the vertical component of the cooling water jet impacting the nozzle baffle 506 under conditions of high driving head and large flow rate of the liquid working fluid, thereby weakening the fluid excitation generated by the liquid film. Combined with the non-uniform thickness structure of the baffle 506 and the supporting effect of the stiffeners, as well as the hydrophobic vibration-absorbing material provided on the surface of the flow-facing plate 507, the vibration excitation and response generated by the liquid working fluid can be effectively reduced.

[0064] Secondly, under conditions of low driving head and low flow rate of the liquid working fluid, the vertical component of the liquid working fluid jet impacting the baffle 506 can be increased, making it easier to generate a liquid film. Combined with the hydrophobic vibration-absorbing material on the anti-flow plate 507, the liquid film can be stably formed and maintained, improving the heat transfer effect of the condenser under low head and low flow rate conditions.

[0065] The arc-shaped cross-section of the flow-inducing plate 507 divides the liquid working fluid film to form a liquid line flow, improving the uniformity of contact between steam and liquid working fluid. The upward-curved end structure of the guide plate 508 causes the liquid working fluid liquid line flow to flow upward and form a counter-current with the steam, enhancing the steam condensation heat transfer coefficient and extending the contact time between the liquid working fluid liquid line flow and the steam, thereby enhancing the heat exchange efficiency of the condenser.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration damping nozzle, characterized in that, include: The base, and two baffles and two jet pipes disposed on the base; Two baffles are disposed opposite to each other on both sides of the base, and two jet pipes are disposed between the two baffles. The output ends of the two jet pipes are respectively directed toward their respective baffles, so that the working fluid in each jet pipe can always act on the corresponding baffle. The jet pipe includes a flexible tube and a nozzle at the output end of the flexible tube. The flexible tube has the ability to flex and deform. The jet pipe has a jet angle α, which is the angle between the axial direction of the nozzle and the horizontal direction. The jet angle α is positively correlated with the input flow rate in the jet pipe. When the input flow rate increases, the bending radius of the flexible tube increases under the action of the centrifugal force of the working fluid, which leads to an increase in the jet angle α of the nozzle. This reduces the impulse of the liquid working fluid sprayed onto the baffle or the flow-inducing plate at high flow rates, thereby reducing the flow-induced vibration caused by the liquid working fluid impacting the baffle or the flow-inducing plate. When the input flow rate decreases, the bending radius of the flexible tube decreases under the action of the flexural restoring force of the flexible tube, which leads to a decrease in the jet angle α of the nozzle. This increases the impulse of the liquid working fluid sprayed onto the flow-inducing plate at low flow rates, making it easier to form a liquid film. Each of the baffles is fitted with a flow-receiving plate on the side facing the corresponding jet pipe. The surface of the flow-receiving plate is provided with a hydrophobic vibration-absorbing layer so that the working fluid ejected from the jet pipe acts on the flow-receiving plate and forms a liquid film on the surface of the flow-receiving plate. One end of each baffle is connected to the base, and the other end extends freely away from the base, and the thickness of each baffle gradually decreases from the end connected to the base to the freely extending end; The vibration damping nozzle also includes a flow guiding assembly, which includes multiple spaced-apart flow guiding plates. A liquid spraying gap is formed between adjacent flow guiding plates. The two ends of each flow guiding plate are respectively connected to the free extended ends of two baffles, so that the flow guiding assembly connects the free extended ends of the two baffles and the liquid film formed on the surface of the flow-inducing plate is cut through the liquid spraying gap to form a working fluid line flow.

2. The vibration damping nozzle according to claim 1, characterized in that, The base is also connected to a flow divider pipe, the input end of which is connected to a working fluid distribution pipe, and the output end of which is connected to the jet pipe.

3. The vibration-damping nozzle according to claim 1, characterized in that, The cross-section of the guide plate is an arc-shaped structure.

4. The vibration-damping nozzle according to claim 1, characterized in that, The spray angle α is any angle between 10° and 70°.

5. A direct-mix condenser having a vibration-damping nozzle as described in any one of claims 1-4, characterized in that, include: A housing, the housing defining an internal cavity; The inner cavity is provided with a working medium collection box, and the working medium collection box is provided with a working medium distribution chamber. The vibration damping nozzle is connected to the working medium distribution chamber. The housing has a steam inlet that communicates with the inner cavity, and the working fluid header is located directly below the steam inlet.

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