Steam pipeline mixing heater

Abstract

The utility model provides a steam pipeline mixing heater, and belongs to the technical field of heaters. The steam pipeline mixing heater comprises a steam pipe, a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a mixing chamber through a flange, the steam pipe is connected with the mixing chamber through a flange, the water outlet end of the water inlet pipe is communicated with a nozzle, and the nozzle extends to an inner cavity of the mixing chamber. By arranging the steam pipe, steam can be conveyed to the mixing chamber through the steam pipe and then mixed with water conveyed to the mixing chamber through the water inlet pipe, the water and the steam are directly mixed and heated, the water heating effect is improved, high heat exchange efficiency is achieved, by arranging a temperature sensor and an adjusting valve, the temperature sensor can detect the temperature of the heated water, and the temperature of the heated water is adjusted. And then a signal is transmitted to the control device to control the opening degree of the regulating valve, so that the temperature of the water can be conveniently controlled and regulated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heater, specifically, relates to a steam pipeline mixed heater. BACKGROUND

[0002] The steam pipeline mixed heater is currently applied to the heating of production and domestic water and hot water heating system, the heat medium commonly used in the heating system is water, steam and air, the heating system taking hot water as the heat medium is called hot water heating system, the hot water heating system has high heat energy utilization rate, small invalid heat loss during transportation, is not easy to corrode the heat dissipation equipment, has long service period, and the surface temperature of the heat dissipation equipment is low, meets the health requirement, the system is convenient to operate, safe to run, easy to realize the centralized regulation of water supply temperature, has high heat storage capacity, and the heat dissipation is uniform, and is suitable for long-distance transportation.

[0003] But the traditional steam heater in the prior art adopts the tube shell type or plate type heat exchanger, has low heat exchange efficiency, and adopts the mode of spraying steam, which can cause the spray head to be damaged easily and reduce the service life of the spray head. CONTENT OF THE UTILITY MODEL

[0004] In order to make up for the above shortage, the utility model provides a steam pipeline mixed heater which overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is realized as follows:

[0006] The utility model provides a steam pipeline mixed heater, including steam pipe, water inlet pipe and water outlet pipe, the water inlet pipe is connected with the mixing chamber through the flange, and the steam pipe is connected with the mixing chamber through the flane, the water outlet end of water inlet pipe is connected with the nozzle, and the nozzle extends to the inner chamber of mixing chamber.

[0007] In a preferred scheme, the right side of the mixing chamber is equipped with the diffuser chamber, and the diffuser chamber is connected with the water inlet end of the water outlet pipe through the flange.

[0008] In a preferred scheme, the surface of the water outlet pipe is equipped with the temperature sensor, the surface of the steam pipe is equipped with the regulating valve, and the end of the steam pipe close to the mixing chamber is equipped with the check valve.

[0009] In a preferred scheme, the inner chamber of the nozzle is equipped with the flow guide groove, the flow guide groove is provided with a plurality of, and the flow guide groove is arranged to be inclined to the axis of the nozzle.

[0010] In a preferred scheme, the inner chamber of the diffuser chamber is equipped with the grid plate, and the grid plate is provided with a plurality of.

[0011] In a preferred scheme, the inner wall of the mixing chamber is provided with fins, the fins are arranged in a spiral staggered manner.

[0012] The steam pipeline mixing heater has the advantages that:

[0013] 1. The mixing chamber and the nozzle are arranged, so that the steam is transported to the mixing chamber through the steam pipe, mixed with the water transported to the mixing chamber through the water inlet pipe, and the water and the steam are directly mixed and heated, the water heating effect is improved, and the heat exchange efficiency is high.

[0014] 2. The temperature sensor, the adjusting valve and the check valve are arranged, so that the temperature sensor detects the temperature of the heated water, and then transmits a signal to the control device to control the opening size of the adjusting valve, so that the temperature of the water is controlled and adjusted, and the check valve can prevent the water from entering the steam pipe due to the pressure generated by the mixing of the steam and the water in the mixing chamber. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 is a schematic diagram of the overall structure provided by the embodiments of the present application;

[0017] In the figure: 1, steam pipe; 2, water inlet pipe; 3, water outlet pipe; 4, mixing chamber; 5, nozzle; 6, pressure expansion chamber; 7, temperature sensor; 8, adjusting valve; 9, check valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0019] REFERENCE Figure 1The utility model provides a technical scheme: a steam pipeline mixed heater, including steam pipe 1, water inlet pipe 2 and water outlet pipe 3, water inlet pipe 2 is connected with mixing chamber 4 through flange, and steam pipe 1 is connected with mixing chamber 4 through flange, and the water outlet end of water inlet pipe 2 is communicated with nozzle 5, and nozzle 5 extends to the inner chamber of mixing chamber 4, can make steam through steam pipe 1 delivery to mixing chamber 4, with the water of water inlet pipe 2 delivery to mixing chamber 4 in mixing, make water and steam directly mix and heat, improve the effect of water heating, and have higher heat transfer efficiency, mixing chamber 4 can fully mix steam and water, break the phase interface, promote the direct contact of vapor-liquid two-phase, release latent heat through steam condensation, realize the rapid transmission of heat from steam to water, and utilize the kinetic energy of steam high-speed jet to disturb water flow, enhance turbulent effect, improve mixing efficiency.

[0020] Refer to Figure 1 In a preferred embodiment, the right side of the mixing chamber 4 is provided with a diffuser chamber 6, and the diffuser chamber 6 is connected with the water inlet end of the water outlet pipe 3 through flange. The diffuser chamber 6 adopts a gradually expanding conical channel, and the expansion angle is 5°-15°. The water entering the diffuser chamber 6 can gradually convert the kinetic energy of high-speed mixed fluid into pressure energy, restore pressure, and reduce the flow rate of water flow and increase the pressure, so that the mixed water flow tends to be uniform and stable.

[0021] Refer to Figure 1 In a preferred embodiment, the inner cavity of the diffuser chamber 6 is installed with a grid plate, and the grid plate is provided with a plurality of grid plates. The opening rate of each layer of grid plate is 70%-85%, the distance between adjacent layers is 1 / 8-1 / 6 of the length of the diffuser chamber, and the diameter of the honeycomb hole is 2-4mm. When the water flow passes through the grid plate, the multiple grid plates can inhibit the formation of vortex, optimize the streamline distribution of water flow, and the outlet end of the diffuser chamber 6 is provided with an anti-erosion bushing. The bushing material is tungsten carbide-cobalt hard alloy, the thickness is 2-3mm, the inner surface of the bushing is processed with fish scale-shaped micro texture with a depth of 0.05-0.1mm, the single texture length of the fish scale-shaped micro texture is 0.2-0.5mm, the texture arrangement density is 200-400 pieces / cm², and the texture inclination angle is 15°-30°. The diffuser chamber 6 can reduce the cavitation risk through pressure recovery, and avoid erosion damage to the water outlet pipe 3.

[0022] In addition, the inner wall of the mixing chamber 4 is installed with fins, and the fins are provided with a plurality of fins. The fins are spirally staggered, the fin height is 1 / 12-1 / 10 of the inner diameter of the mixing chamber 4, the fin pitch is 1 / 4-1 / 3 of the length of the mixing chamber 4, the fin surface is plated with a 0.1-0.3mm thick hard chromium layer, the fin forced fluid generates secondary flow, and the vapor-liquid contact area increases by 2-3 times. The fins can increase the shear force on the water flow, thereby improving the steam effect on the steam and water flow. The thick hard chromium layer can resist erosion of the steam-containing water flow, and the service life is prolonged to more than 5 times that of ordinary carbon steel.

[0023] Referring to Figure 1 In a preferred embodiment, the surface of the water outlet pipe 3 is provided with a temperature sensor 7, and the surface of the steam pipe 1 is provided with a regulating valve 8, the valve core of the regulating valve 8 adopts a double-layer structure, the outer layer is a 304 stainless steel base, and the inner layer is a copper-graphite alloy bushing with a thickness of 1-2 mm, and a V-shaped flow guide groove is formed on the surface of the bushing. A check valve 9 is installed at the end of the steam pipe 1 close to the mixing chamber 4, so that the temperature sensor 7 can detect the temperature of the heated water, and then transmit the signal to the control device to control the size of the opening of the regulating valve 8, thereby facilitating the control and adjustment of the temperature of the water. The check valve 9 can prevent water from entering the steam pipe 1 due to the pressure generated by the mixing of steam and water in the mixing chamber 4.

[0024] Referring to Figure 1 In a preferred embodiment, the inner cavity of the nozzle 5 is provided with a flow guide groove, and the flow guide groove is inclined at an angle of 30° with respect to the axis of the nozzle 5, so that the water flow entering the nozzle 5 can be guided and sprayed out, and then mixed with the air sprayed into the mixing chamber 4 by the steam pipe 1 to pre-break the steam bubbles, so that the water flow and the steam can be mixed when they impact each other in the mixing chamber 4, facilitating the full heat exchange between the steam and the water in the mixing chamber 4.

[0025] Specifically, the working process or principle of the steam pipeline mixing heater is as follows: during use, steam is delivered from the water inlet pipe 2 and the steam pipe 1 into the mixing chamber 4. When the water is delivered to the nozzle 5, it is guided by the flow guide groove on the inner wall of the nozzle 5 to reduce the occurrence of turbulent flow, and then the water flow is formed into a shear force with the steam sprayed from the steam pipe 1 when it is sprayed out of the nozzle 5, so that the water flow and the steam impact the fins on the inner wall of the mixing chamber 4, and then the water flow and the steam are disturbed to mix with each other in the mixing chamber 4, thereby heating the water flow. In addition, when the water flow enters the diffuser chamber 6, the grid plate can reduce the impact of the water flow and optimize the heated water flow, so that the water can be discharged from the water outlet pipe 3. The temperature sensor 7 at the water outlet pipe 3 can monitor the temperature of the water in the water outlet pipe 3 in real time and feed back the temperature to the controller, so that when the temperature deviation of the water flow exceeds the set threshold value, the controller can control the size of the opening of the regulating valve 8, thereby controlling the delivery amount of the steam and the heating temperature of the water flow. The steam pipeline mixing heater has a high heat exchange rate and a low cost compared with other heat exchange equipment.

[0026] It should be noted that the temperature sensor 7 and the regulating valve 8 are devices or equipment existing in the prior art or devices or equipment that can be realized in the prior art, and their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A steam line mixed heater comprising a steam pipe (1), a water inlet pipe (2) and a water outlet pipe (3), characterized in that; The water inlet pipe (2) is connected with a mixing chamber (4) through a flange, and the steam pipe (1) is connected with the mixing chamber (4) through a flange, the water outlet end of the water inlet pipe (2) is communicated with a nozzle (5), and the nozzle (5) extends to the inner cavity of the mixing chamber (4).

2. A steam line hybrid heater according to claim 1, wherein, The right side of the mixing chamber (4) is provided with an expansion chamber (6), and the expansion chamber (6) is connected with the water inlet end of the water outlet pipe (3) through a flange.

3. A steam line hybrid heater according to claim 1, wherein, The surface of the water outlet pipe (3) is provided with a temperature sensor (7), the surface of the steam pipe (1) is provided with an adjusting valve (8), and the end of the steam pipe (1) close to the mixing chamber (4) is provided with a check valve (9).

4. A steam line hybrid heater according to claim 1, wherein, The inner cavity of the nozzle (5) is provided with a flow guide groove, the flow guide groove is provided with a plurality of flow guide grooves, and the flow guide groove is inclined to the axis of the nozzle (5) by 30°.

5. A steam line hybrid heater according to claim 2, wherein, The inner cavity of the expansion chamber (6) is provided with a grid plate, and the grid plate is provided with a plurality of grid plates.

6. A steam line hybrid heater according to claim 1 wherein, The inner wall of the mixing chamber (4) is provided with fins, the fins are provided with a plurality of fins, and the plurality of fins are spirally staggered.

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