Wide-through-flow heater flow guide device

Abstract

The invention discloses a wide-through-flow heater flow guide device, and relates to the technical field of heat exchange equipment, the heater flow guide device comprises a shell and a flow guide assembly, a plurality of tube bundles are erected in the shell, the tube bundles are used for conveying water to be heated, and a cavity between the shell and the tube bundles is used for conveying steam; the shell is provided with a steam inlet pipe, the steam inlet pipe is communicated with a cavity of the shell, the flow guide assembly is arranged in the shell and comprises an arc plate and a leakage plate, the arc plate is fixedly arranged in the shell and located at the position right opposite to an inlet of the steam inlet pipe, the protruding side of the arc plate faces the inlet of the steam inlet pipe, and the leakage plate is fixedly arranged on the inner wall of the shell. The leakage plates are located on the sides, away from the steam inlet pipe, of the arc plates in the arc-shaped extending direction of the arc plates, leakage holes are formed in the leakage plates, the ends, away from the inner wall of the shell, of the leakage plates face the pipe bundle, and the widths of the multiple leakage plates are gradually reduced; the heater flow guiding device achieves flow guiding of steam at an inlet and prevents the steam from impacting a pipe bundle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heat exchange equipment, and particularly relates to a wide-flow heater flow guide device. BACKGROUND

[0002] The steam-type heater is an energy-saving heat exchange device for heating medium (usually water, air or other fluid) by using the latent heat of steam, and is widely used in the fields of heating and industrial production due to the advantages of high-efficiency heat exchange and energy saving in the energy transfer process.

[0003] For the water as the heated medium, the structure of the steam-type heater is that a tube bundle is arranged in a shell, and the water medium to be heated in the tube bundle is subjected to heat exchange by the contact of steam with the tube bundle wall to meet the demand of heating domestic hot water and industrial process water. When the steam enters the shell through a steam inlet, the steam is in a high-pressure and high-speed state, vertically impacts the tube bundle near the inlet position, and causes local overheating of the tube bundle, resulting in thermal stress damage and destruction of the tube bundle. SUMMARY

[0004] The purpose of the present application is to provide a wide-flow heater flow guide device with simple structure and reasonable design to solve the above problems.

[0005] The present application achieves the above-mentioned purpose by the following technical solutions:

[0006] A wide-flow heater flow guide device comprises:

[0007] A shell is arranged in a horizontal tube structure, a plurality of parallel and spaced tube bundles are arranged in the shell, the tube bundles are used for conveying water to be heated, and a chamber between the shell and the tube bundles is used for conveying steam;

[0008] A flow guide assembly is arranged in the shell, the flow guide assembly comprises an arc plate and a leakage plate, the arc plate is fixedly arranged in the shell and located at a position opposite to an inlet of a steam inlet pipe, a convex side of the arc plate is arranged towards the inlet of the steam inlet pipe, the leakage plate is fixedly arranged on an inner wall of the shell and extends along an arc direction of the arc plate, the leakage plate is located on a side of the arc plate away from the steam inlet pipe, a plurality of leakage holes are arranged in the leakage plate, and an end of the leakage plate away from the inner wall of the shell is arranged towards the tube bundle.

[0009] As a further optimization scheme of the present application, the end of the leakage plate away from the inner wall of the shell is provided with a flow guide plate, and the width of the plurality of flow guide plates gradually increases along the arc direction of the arc plate.

[0010] As a further optimization scheme of the present application, the inner bottom wall of the shell is fixedly connected with a main support plate, a gap is formed between the upper end of the main support plate and the inner wall of the shell, the inner top wall of the shell is fixedly connected with a secondary support plate, and a gap is formed between the lower end of the secondary support plate and the inner wall of the shell.

[0011] As a further optimization scheme of the present application, the tube bundle has an up-down zigzag structure, the high end of the tube bundle is fixedly arranged on the main support plate, and the low end of the tube bundle is fixedly arranged on the secondary support plate.

[0012] As a further optimization scheme of the present application, the secondary support plate is provided with a drainage mechanism, which is used to guide the condensed water collected from the high end position to the low end position of the tube bundle to the lower side of the secondary support plate.

[0013] As a further optimization scheme of the present application, the drainage mechanism comprises a squeezing driving assembly and a baffle, the driving end of the squeezing driving assembly is transmissionally connected with the baffle, the squeezing driving assembly is used to drive the baffle to move up and down, the baffle is symmetrically arranged on both sides of the secondary support plate, a sliding groove is formed in the baffle, the baffle is sleeved on the bottom end position of the tube bundle through the sliding groove, a sponge is embedded in the bottom of the sliding groove, the bottom of the sliding groove is an inclined surface, and the inclined surface is inclinedly arranged towards the secondary support plate, when the baffle is located at the initial position, the surface of the tube bundle abuts against the top wall of the sliding groove, when the baffle is driven by the squeezing driving assembly to move to the maximum displacement, the water in the sponge is squeezed out and guided to the flow guiding gap on the side of the baffle towards the secondary support plate.

[0014] As a further optimization scheme of the present application, the side of the secondary support plate towards the baffle is provided with a yielding slot, a first spring is fixedly connected with the end face of the yielding slot, the other end of the first spring is fixedly connected with a displacement plate, the displacement plate is in sliding fit with the side wall of the yielding slot, a clamping groove is formed in the side of the displacement plate towards the baffle, a protruding block is correspondingly fixedly arranged on the side of the baffle towards the displacement plate, when the baffle is located at the initial position, the protruding block is clamped in the clamping groove, and the displacement plate is in fit with the baffle; when the baffle is moved to the maximum displacement, a flow guiding gap is formed between the displacement plate and the baffle.

[0015] As a further optimization scheme of the present application, the squeezing driving assembly comprises a main shaft, a motor, a cam and a frame, the output end of the motor is transmissionally connected with the main shaft, the cam is fixedly installed on the main shaft, the upper end of the baffle is fixedly connected with a connecting rod, the connecting rod penetrates through the shell and is in sliding connection with the shell, the outer end of the connecting rod is fixedly connected with the frame, the cam is in abutment with the inner frame wall of the frame, a second spring is sleeved on the part of the connecting rod between the frame and the shell, one end of the second spring is fixedly connected with the shell, and the other end of the second spring is fixedly connected with the frame.

[0016] As a further optimization scheme of the present application, the two ends of the shell are respectively provided with end plates, and the two ends of the tube bundle respectively penetrate through the corresponding end plates and are fixedly connected with the end plates.

[0017] As a further optimization scheme of the present application, along the water conveying direction, the rear of the shell is provided with a rear pipe box, the water inlet end of the tube bundle is communicated with the rear pipe box, and a water inlet pipe is installed on the rear pipe box and communicated with the rear pipe box; the front of the shell is provided with a front pipe box, the water outlet end of the tube bundle is communicated with the front pipe box, and a water outlet pipe is installed on the front pipe box and communicated with the front pipe box; wherein, the lower parts of the front pipe box and the rear pipe box are respectively provided with drain pipes.

[0018] The present application has at least the following advantages: the present application discloses an energy-saving heat exchange device, specifically a wide-flow heater flow guide device, which comprises a shell and a flow guide assembly, the flow guide assembly comprising an arc plate and a leakage plate, the arc plate being arranged at the inlet of the steam inlet pipe to effectively prevent the steam in high pressure and high speed from vertically impacting the tube bundle, so as to prevent the local overheating of the tube bundle from causing thermal stress damage and destroying the tube bundle; in addition, the leakage plate is provided with a plurality of leakage holes, so that the steam is divided into a plurality of small air flows, the impact force is greatly reduced when the steam diffuses to the surface of the tube bundle, the residence time of the steam near the tube bundle is prolonged, the heat exchange efficiency between the steam and the water flow medium in the tube is improved, and the width of the plurality of leakage plates gradually decreases, so that the steam after flow guiding is secondarily divided, the diffusion of the steam is ensured, and the heat exchange efficiency of the device is further ensured.

[0019] Furthermore, the flow guide plates are arranged on one side of the leakage plate, the width of the plurality of flow guide plates gradually increases, the steam under the obstruction is diffused towards the tube bundle through the flow guide plates, a part of the steam passing through the front leakage plate continues to pass through the rear leakage plate, and another part of the steam is guided by the rear flow guide plate to flow and diffuse towards the tube bundle, so that the steam flows through the plurality of flow guide plates to realize uniform diffusion of the steam, improve the diffusion effect of the steam, and improve the heat exchange efficiency between the steam and the tube bundle.

[0020] In addition, the drain mechanism is arranged on the auxiliary support plate, the drain mechanism comprises a squeezing driving assembly and a baffle, the sponge in the sliding groove on the baffle absorbs the condensate water flowing downwards from the tube bundle, and under the driving of the squeezing driving assembly, the baffle moves upwards, the water in the sponge is squeezed out, the protrusion on the baffle squeezes the displacement plate, the displacement plate compresses the first spring, a flow guide gap is formed between the displacement plate and the baffle, the squeezed water flows out from the gap, the inclined low end position of the tube bundle below is not covered by the water droplets flowing downwards from the tube bundle above, and the heating efficiency of the steam on the water flow medium in the tube bundle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 is a partial sectional structure schematic diagram of the flow guide assembly and the shell of the present application; Figure 1 is a front sectional structure schematic diagram of the present application;

[0023] Figure 3 is a partial sectional structure schematic diagram of the flow guide assembly and the shell of the present application;

[0024] Figure 4 is a partial structure schematic diagram of the liquid discharge mechanism and the tube bundle of the present application;

[0025] Figure 5 is an enlarged view of A in the present application; Figure 4 is an enlarged view of B in the present application;

[0026] Figure 6 is a front partial sectional structure schematic diagram of the liquid discharge mechanism and the tube bundle of the present application; Figure 1 ;

[0027] Figure 7 is an enlarged view of B in the present application; Figure 6 is an enlarged view of B in the present application;

[0028] Figure 8 is a partial sectional structure schematic diagram of the sub-support plate and the displacement plate of the present application;

[0029] Figure 9 is a front partial sectional structure schematic diagram of the liquid discharge mechanism and the tube bundle of the present application; Figure 2 .

[0030] In the figure: 1, shell; 11, water inlet pipe; 12, drain pipe; 13, water outlet pipe; 14, front pipe box; 15, steam inlet pipe; 16, steam outlet pipe; 17, rear pipe box; 18, end plate; 2, liquid discharge mechanism; 21, flow guide assembly; 211, arc plate; 212, flow guide plate; 213, leakage plate; 22, main shaft; 23, motor; 24, frame; 25, cam; 26, connecting rod; 27, baffle; 271, sponge; 272, chute; 273, protrusion; 274, clamping groove; 28, sub-support plate; 281, displacement slot; 282, displacement plate; 283, first spring; 29, second spring; 3, main support plate; 4, tube bundle. DETAILED DESCRIPTION

[0031] It is necessary to point out here that the following detailed description is only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0032] As Figure 1 , Figure 2 and Figure 3As shown, the present invention provides a wide-flow heater guiding device, comprising:

[0033] The shell 1 is configured as a horizontal tube structure. Multiple parallel and spaced tube bundles 4 are installed inside the shell 1. The tube bundles 4 are used to transport water to be heated. The chamber between the shell 1 and the tube bundles 4 is used to transport steam.

[0034] A flow guiding assembly 21 is provided on the housing 1, with a steam inlet pipe 15 communicating with the chamber of the housing 1. The flow guiding assembly 21 is disposed in the housing 1 and includes an arc plate 211 and a drain plate 213. The arc plate 211 is fixedly disposed inside the housing 1 and is located directly opposite the inlet of the steam inlet pipe 15, with the convex side of the arc plate 211 facing the inlet of the steam inlet pipe 15. The drain plate 213 is fixedly disposed on the inner wall of the housing 1, extending along the arcuate direction of the arc plate 211. The drain plate 213 is located on the side of the arc plate 211 away from the steam inlet pipe 15 and has a drain hole. The end of the drain plate 213 away from the inner wall of the housing 1 is positioned towards the tube bundle 4. Figure 3 The width of the plurality of the perforated plates 213 gradually decreases as indicated by the arc-shaped dashed lines.

[0035] Steam Figure 3 The dashed arrow indicates that as the steam enters the inner cavity of the shell 1 from the steam inlet pipe 15, the steam is guided laterally by the arc plate 211, rather than directly impacting the tube bundle 4. This effectively prevents the high-pressure, high-speed steam from vertically impacting the tube bundle 4, causing localized overheating and thermal stress damage, which could lead to the destruction of the tube bundle 4. Furthermore, the perforated structure of the perforated plate 213 divides the steam into multiple smaller airflows, greatly reducing the impact force when the steam diffuses to the surface of the tube bundle 4, thus reducing the steam velocity near the tube bundle 4. To extend the residence time of steam near tube bundle 4, improve the heat exchange efficiency between steam and water flow medium in tube bundle 4, and ensure energy saving effect, the structure design of multiple slugs 213 with gradually decreasing width along the arc extension direction of arc plate 211 enables secondary diversion of steam after diversion, realizing multi-angle diffusion of steam. Since the steam is obstructed by the front slug 213, the impact force of steam is smaller when it reaches the rear slug 213. Therefore, the required width of slug 213 is smaller.

[0036] Continue reading Figure 3The end of the leakage plate 213 away from the inner wall of the shell 1 is provided with a flow guide plate 212. The width of the plurality of flow guide plates 212 gradually increases along the arc extension direction of the arc plate 211. Due to the blocking effect of the leakage plate 213, the impact force of the steam gradually decreases. The flow guide plate 212 is arranged on one side of the leakage plate 213, so that the steam under the obstruction is diffused towards the tube bundle 4 through the flow guide plate 212. The width of the plurality of flow guide plates 212 gradually increases, that is, the leakage plate 213 with a small width is equipped with a flow guide plate 212 with a large width, so that part of the steam passing through the front leakage plate 213 continues to pass through the rear leakage plate 213, and another part is guided by the rear flow guide plate 212 to flow and diffuse towards the tube bundle 4, so that steam is guided on the plurality of flow guide plates 212 to realize uniform diffusion of steam and improve the diffusion effect of steam, thereby improving the heat exchange efficiency between the steam and the tube bundle 4.

[0037] It should be noted that the working principle of the steam heater is as follows: steam enters: high-temperature saturated steam (or superheated steam) enters the shell 1 of the heater through the inlet of the steam inlet pipe 15; heat is released: when the steam contacts the wall of the tube bundle 4, the steam quickly condenses into condensed water while releasing a large amount of latent heat (if it is superheated steam, it first releases sensible heat by cooling, and then releases latent heat by condensing); medium heating: after the wall of the tube bundle 4 absorbs the heat of the steam, it is transmitted to the water flowing in the tube bundle 4, and the temperature of the water gradually rises to the target value; condensed water is discharged: the condensed water flows to the outlet side of the drain pipe arranged below the shell 1 under the action of gravity or pressure difference, and is discharged from the heater through the trap (the trap automatically blocks the uncondensed steam to avoid energy waste); hot water output: the heated water leaves the heater through the outlet pipe 13 and enters the subsequent system (such as a heating pipe network or an industrial production line).

[0038] Based on this, Figure 1 and Figure 2 As shown, the two ends of the shell 1 are respectively provided with end plates 18, and the two ends of the tube bundle 4 respectively penetrate through the corresponding end plates 18 and are fixedly connected with the end plates 18, so that the inner cavity region of the shell 1 between the two end plates 18 is the heating working area of the steam to the water flow medium.

[0039] Moreover, along the water conveying direction, that is, Figure 2The rear of the shell 1 is provided with a rear tube box 17, the water inlet end of the tube bundle 4 is communicated with the rear tube box 17, and the rear tube box 17 is provided with a water inlet pipe 11 communicated with the rear tube box 17, so as to pre-supply the water flow medium to be heated into the rear tube box 17. The front of the shell 1 is provided with a front tube box 14, the water outlet end of the tube bundle 4 is communicated with the front tube box 14, so as to pre-store the heated water flow medium in the front tube box 14, and the front tube box 14 is provided with a water outlet pipe 13 communicated with the front tube box 14, so as to further supply the heated water flow medium to the next working area through the water outlet pipe 13. The bottom of the front tube box 14 and the bottom of the rear tube box 17 are respectively provided with a drain pipe 12, so as to drain the residual water in the front tube box 14 and the rear tube box 17 through the drain pipe 12 when the equipment stops working or is subsequently maintained.

[0040] For example, referring to Figure 2 and Figure 4 , the inner bottom wall of the shell 1 is fixedly connected with a main support plate 3, the upper end of the main support plate 3 has a gap with the inner wall of the shell 1, and the inner top wall of the shell 1 is fixedly connected with a secondary support plate 28, the lower end of the secondary support plate 28 has a gap with the inner wall of the shell 1. In the horizontal extension direction of the shell 1, the main support plate 3 and the secondary support plate 28 are alternately and spacedly arranged. For example, referring to Figure 2 , three main support plates 3 and four secondary support plates 28 are alternately and spacedly arranged, so that the steam flows in the direction of the dashed arrow, the flow trajectory of the steam is lengthened, the contact time of the steam with the tube bundle 4 is further lengthened, and the heat exchange efficiency between the steam and the tube bundle 4 is improved.

[0041] As shown in Figure 2 , the tube bundle 4 has an up-down zigzag structure, the high end of the tube bundle 4 is fixedly arranged on the main support plate 3, and the low end of the tube bundle 4 is fixedly arranged on the secondary support plate 28, so as to increase the contact area of the tube bundle 4 with the steam and improve the total heat exchange amount.

[0042] In another embodiment, based on the above embodiment, referring to Figure 1 , the secondary support plate 28 is provided with a drainage mechanism 2, which is used to guide the condensed water collected from the high end position to the low end position of the tube bundle 4 to the lower side of the secondary support plate 28.

[0043] For example, referring to Figure 4 , Figure 5 and Figure 6, the drainage mechanism 2 comprises a squeeze driving assembly and a baffle 27, the driving end of the squeeze driving assembly is transmissionally connected with the baffle 27, the squeeze driving assembly is used for driving the baffle 27 to move up and down, the baffle 27 is symmetrically arranged at the two sides of the auxiliary supporting plate 28, the baffle 27 is provided with a chute 272 on the baffle 27, the baffle 27 is sleeved at the bottom end position of the tube bundle 4 through the chute 272, the bottom of the chute 272 is embedded with a sponge 271, the bottom of the chute 272 is an inclined surface, and the inclined surface is arranged to be inclined towards the auxiliary supporting plate 28;

[0044] When the baffle 27 is located at the initial position, the surface of the tube bundle 4 abuts against the top wall of the chute 272, as shown in Figure 5 , for the water condensed on the inclined surface of the tube bundle 4 to slide to the position of the sponge 271 and be absorbed by the sponge 271 to avoid the position of the tube bundle 4 close to the baffle 27 being covered by water droplets, affecting the direct contact of the steam with the tube wall of the tube bundle 4;

[0045] When the baffle 27 is moved to the maximum displacement under the driving of the squeeze driving assembly, the sponge 271 is squeezed, because the bottom of the chute 272 is an inclined surface, the outer end of the sponge 271 (i.e. the part of the sponge 271 located at the high end position of the inclined surface) is first squeezed, so that the water in the sponge 271 at this position is absorbed by the part of the sponge 271 at the low end position of the inclined surface, with the gradual squeezing of the sponge 271, the water in the sponge 271 is squeezed out and flows to the flow guiding gap on the side of the baffle 27 towards the auxiliary supporting plate 28, so that the water droplets sliding down the tube bundle 4 flow away from the side of the baffle 27 away from the tube bundle 4, thereby avoiding the inclined low end position of the tube bundle 4 below being covered by the water droplets flowing down the tube bundle 4 above.

[0046] For example, continuing to refer to Figure 6 , Figure 7 and Figure 8 , the side of the auxiliary supporting plate 28 towards the baffle 27 is provided with a displacement slot 281, the end face of the displacement slot 281 is fixedly connected with a first spring 283, the other end of the first spring 283 is fixedly connected with a displacement plate 282, the displacement plate 282 is in sliding fit with the side wall of the displacement slot 281, the side of the displacement plate 282 towards the baffle 27 is provided with a clamping groove 274, and the side of the baffle 27 towards the displacement plate 282 is correspondingly fixedly provided with a protruding block 273;

[0047] When the baffle 27 is located at the initial position, as shown in Figure 6 and Figure 7 , the protruding block 273 is clamped in the clamping groove 274, and the displacement plate 282 is in fit with the baffle 27;

[0048] When the baffle 27 is moved up under the drive of the extrusion driving assembly, the protrusion 273 extrudes the clamping groove 274, the displacement plate 282 compresses the first spring 283, and the distance between the displacement plate 282 and the baffle 27 gradually increases. During the displacement of the displacement plate 282, the space of the sliding groove 272 is extruded, and the upward movement of the baffle 27 and the horizontal displacement of the displacement plate 282 form a downward relative movement of the displacement plate 282 relative to the baffle 27, which promotes the sponge 271 to be further extruded to the gap between the displacement plate 282 and the baffle 27. When the baffle 27 is moved to the maximum displacement, as shown in Figure 9 , a flow guide gap is formed between the displacement plate 282 and the baffle 27, so that the condensed water extruded by the plurality of sponges 271 is guided to the lower side of the auxiliary support plate 28.

[0049] For example, referring to Figure 2 and Figure 4 , the extrusion driving assembly includes a main shaft 22, a motor 23, a cam 25, and a frame 24. The output end of the motor 23 is drivingly connected with the main shaft 22, and the main shaft 22 is fixedly installed with the cam 25. The upper end of the baffle 27 is fixedly connected with a connecting rod 26, and the connecting rod 26 penetrates through the shell 1 and is slidingly connected with the shell 1. It should be noted that the connection position between the connecting rod 26 and the shell 1 is kept in a sealed state. The outer end of the connecting rod 26 is fixedly connected with the frame 24. The arc surface of the cam 25 abuts against the inner frame wall of the frame 24. The part of the connecting rod 26 between the frame 24 and the shell 1 is sleeved with a second spring 29. One end of the second spring 29 is fixedly connected with the shell 1, and the other end of the second spring 29 is fixedly connected with the frame 24.

[0050] It should be noted that, as shown in Figure 2 , the motor 23 is a double-shaft stepping motor. Under the drive of the motor, the main shaft 22 drivingly connects a plurality of cams 25.

[0051] The wide-flow heater flow guide device, in use, delivers steam into the shell 1 from the steam inlet pipe 15, and prevents the steam from directly impacting the surface of the tube bundle 4 by means of the flow division of the arc plate 211. Moreover, the steam is divided into a plurality of small air flows by means of the hole structure of the leakage plate 213, so that the impact force is greatly reduced when the steam diffuses to the surface of the tube bundle 4. The width of the plurality of leakage plates 213 gradually decreases along the arc extension direction of the arc plate 211, so as to realize secondary flow division of the guided steam and make the steam quickly diffuse to the plurality of tube bundles 4.

[0052] Moreover, the steam passing through the front leak plate 213 continues to pass through the rear leak plate 213, and another part is guided by the rear guide plate 212 to flow and diffuse toward the tube bundle 4, so that the steam is guided on the multiple guide plates 212 to realize uniform diffusion of the steam, improve the diffusion effect of the steam, and improve the heat exchange efficiency between the steam and the tube bundle 4.

[0053] Then, after heating for a period of time, the water droplets condensed on the surface of the tube bundle 4 arranged obliquely slide down and are absorbed by the sponge 271. Under the drive of the motor 23, the main shaft 22 drives the cam 25 to rotate, and through the transmission between the cam 25 and the frame 24, the connecting rod 26 drives the baffle 27 to move upward. The water in the sponge 271 is squeezed out by the tube bundle 4, and the upward-moving baffle 27 extrudes the displacement plate 282 through the protrusion 273, so that the displacement plate 282 extrudes the first spring 283. A flow guide gap is formed between the displacement plate 282 and the baffle 27, and the water squeezed out of the sponge 271 flows to the lower side of the auxiliary support plate 28 from the side of the baffle 27 away from the tube bundle 4 through the gap, so that the position of the tube bundle 4 close to the baffle 27 is not covered by the water droplets, and the direct contact between the steam and the tube wall of the tube bundle 4 is not affected.

[0054] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. A heater flow guide device for wide flow, characterized by, The utility model relates to a steam heating device for heating water, comprising: a shell (1) provided as a horizontal pipe body structure, a plurality of parallel and spaced pipe bundles (4) are arranged in the shell (1), the pipe bundles (4) are used for conveying water to be heated, and a cavity between the shell (1) and the pipe bundles (4) is used for conveying steam; a flow guide assembly (21) provided in the shell (1), the flow guide assembly (21) comprises an arc plate (211) and a leakage plate (213), the arc plate (211) is fixedly arranged in the shell (1) and located opposite to an inlet of a steam inlet pipe (15), a convex side of the arc plate (211) faces the inlet of the steam inlet pipe (15), the leakage plate (213) is fixedly arranged on an inner wall of the shell (1) and extends along an arc direction of the arc plate (211), the leakage plate (213) is located on a side of the arc plate (211) away from the steam inlet pipe (15), a plurality of leakage holes are formed in the leakage plate (213), and an end of the leakage plate (213) away from the inner wall of the shell (1) faces the pipe bundles (4), wherein the widths of the plurality of leakage plates (213) gradually decrease along the arc direction of the arc plate (211).

2. The heater flow guide of claim 1, wherein, The end of the leakage plate (213) away from the inner wall of the shell (1) is provided with a flow guide plate (212), and the widths of the plurality of flow guide plates (212) gradually increase along the arc direction of the arc plate (211).

3. A flow-focusing heater flow guide device according to claim 2, wherein, The inner bottom wall of the shell (1) is fixedly connected with a main support plate (3), a gap is formed between the upper end of the main support plate (3) and the inner wall of the shell (1), the inner top wall of the shell (1) is fixedly connected with a secondary support plate (28), a gap is formed between the lower end of the secondary support plate (28) and the inner wall of the shell (1), and the main support plate (3) and the secondary support plate (28) are alternately and spacedly arranged along the horizontal extension direction of the shell (1).

4. A flow-focusing heater flow guide device according to claim 3, wherein, The pipe bundles (4) are provided as an up-down zigzag structure, the high end of the pipe bundles (4) is fixedly arranged on the main support plate (3), and the low end of the pipe bundles (4) is fixedly arranged on the secondary support plate (28).

5. A flow-focusing heater flow guide device according to claim 4, wherein, The secondary support plate (28) is provided with a drainage mechanism (2), and the drainage mechanism (2) is used for guiding condensed water collected from a high end position to a low end position of the pipe bundles (4) to below the secondary support plate (28).

6. A flow-focusing heater flow guide device according to claim 5, wherein, The liquid drainage mechanism (2) comprises a squeezing driving assembly and a baffle (27), the driving end of the squeezing driving assembly is transmissionally connected with the baffle (27), the squeezing driving assembly is used for driving the baffle (27) to move up and down, the baffle (27) is symmetrically arranged on the two sides of a secondary support plate (28), a sliding groove (272) is arranged on the baffle (27), the baffle (27) is sleeved on the bottom end position of the tube bundle (4) through the sliding groove (272), a sponge (271) is embedded in the bottom of the sliding groove (272), the bottom of the sliding groove (272) is an inclined surface, and the inclined surface is arranged to be inclined towards the secondary support plate (28), when the baffle (27) is located at the initial position, the surface of the tube bundle (4) abuts against the top wall of the sliding groove (272), when the baffle (27) is moved up to the maximum displacement under the driving of the squeezing driving assembly, the water in the sponge (271) is squeezed out and flows to the flow guide gap on the side of the baffle (27) towards the secondary support plate (28).

7. A flow-focusing heater flow guide device according to claim 6, wherein, A displacement slot (281) is arranged on the side of the secondary support plate (28) towards the baffle (27), a first spring (283) is fixedly connected to the end face of the displacement slot (281), the other end of the first spring (283) is fixedly connected with a displacement plate (282), the displacement plate (282) is in sliding fit with the side wall of the displacement slot (281), a clamping groove (274) is arranged on the side of the displacement plate (282) towards the baffle (27), a protruding block (273) is fixedly arranged on the side of the baffle (27) towards the displacement plate (282), when the baffle (27) is located at the initial position, the protruding block (273) is clamped with the clamping groove (274), and the displacement plate (282) is in fit with the baffle (27); when the baffle (27) is moved up to the maximum displacement, the flow guide gap is formed between the displacement plate (282) and the baffle (27).

8. A flow-focusing heater flow guide device according to claim 7, wherein, The squeezing driving assembly comprises a main shaft (22), a motor (23), a cam (25) and a frame (24), the output end of the motor (23) is transmissionally connected with the main shaft (22), the main shaft (22) is fixedly installed with the cam (25), the upper end of the baffle (27) is fixedly connected with a connecting rod (26), the connecting rod (26) penetrates through the shell (1) and is in sliding connection with the shell (1), the outer end of the connecting rod (26) is fixedly connected with the frame (24), the arc surface of the cam (25) abuts against the inner frame wall of the frame (24), the part of the connecting rod (26) between the frame (24) and the shell (1) is sleeved with a second spring (29), one end of the second spring (29) is fixedly connected with the shell (1), and the other end of the second spring (29) is fixedly connected with the frame (24).

9. The flow-focusing heater flow guide device of claim 1, wherein, Both ends of the shell (1) are respectively provided with end plates (18), both ends of the tube bundle (4) penetrate through the corresponding end plates (18) and are fixedly connected with the end plates (18).

10. The flow-focusing heater flow guide device of claim 9, wherein, A rear tube box (17) is mounted at the rear of the shell (1) along the conveying direction of water, the water inlet end of the tube bundle (4) communicates with the rear tube box (17), and the rear tube box (17) is provided with a water inlet pipe (11) mounted thereon, the water inlet pipe (11) communicates with the rear tube box (17), a front tube box (14) is mounted at the front of the shell (1), the water outlet end of the tube bundle (4) communicates with the front tube box (14), and the front tube box (14) is provided with a water outlet pipe (13) mounted thereon, the water outlet pipe (13) communicates with the front tube box (14), wherein a drain pipe (12) is mounted below the front tube box (14) and the rear tube box (17) respectively.

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