CN216205589U

CN216205589U - Supersonic steam-driven heater

Info

Publication number: CN216205589U
Application number: CN202122651684.XU
Authority: CN
Inventors: 姜凯
Original assignee: Shaanxi Dexin Thermal Energy Technology Co ltd
Current assignee: Shaanxi Dexin Thermal Energy Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-05
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses an ultrasonic steam-driven heater which comprises a device main body, wherein a steam spray pipe, a steam-water two-phase flow pipe and a diffuser pipe are sequentially connected from left to right inside the device main body, a steam inlet is formed in the end part of the steam spray pipe, a cold water inlet pipe is connected to the top of one end, close to the steam spray pipe, of the steam-water two-phase flow pipe, and a hot water outlet is formed in one end, far away from the steam-water two-phase flow pipe, of the diffuser pipe. Compared with the prior art, the utility model has the advantages that: 1. the installation is simple; 2. steam is saved; 3. the electric power is saved; 4. the maintenance is convenient; 5. the investment is saved; 6. the heat flow calculator function is provided; 7. the device can be started and stopped instantly, is convenient to control and saves energy; 8. the equipment has small volume and light weight, and is convenient to install and maintain; 9. the heat transfer coefficient is close to 1.

Description

Supersonic steam-driven heater

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a supersonic steam-driven heater.

Background

The steam-driven heater takes steam as a heat source and also as a power source, realizes the temperature rise and pressure rise of water flow in the direct steam-water mixing process, has the composite function of heat exchange and water pump combination, is high-efficiency and energy-saving steam-water heat exchange equipment, and is widely applied to various heating systems and domestic hot water systems.

The heat exchanger among the prior art is mostly plate heat exchanger, spiral plate heat exchanger and shell and tube type heat exchanger, and the structure is comparatively complicated, and steam loss is great moreover to lead to whole installation difficulty, later maintenance difficulty, power consumption big and with higher costs.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide a supersonic pneumatic heater with simple and effective structure, aiming at the deficiencies in the background art.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a supersonic speed steam-operated heater, includes the device main part, the device main part inside connect gradually from a left side to the right side and be equipped with steam spray tube, the double-phase flow tube of soda and diffuser pipe, steam spray tube tip be equipped with steam inlet, the double-phase flow tube of soda be close to steam spray tube one end top and connect and be equipped with the cold water inlet tube, the diffuser pipe keep away from the one end of the double-phase flow tube of soda and be equipped with the hot water delivery port.

Furthermore, the steam spray pipe and the diffuser pipe are both in a conical bottle shape, the steam-water two-phase flow pipe is funnel-shaped, and steam and water can be directly mixed and pressurized through the shape and can replace a pump.

Furthermore, a first flow control valve and a second flow control valve are respectively connected to the steam inlet and the cold water inlet pipe, so that the steam and water inlet rate can be conveniently controlled.

Compared with the prior art, the utility model has the advantages that: 1. the steam-driven heater is simple to install, and the steam-driven heater is small in size, light in weight and convenient to operate, and only needs to be connected to a pipeline in series during installation, so that an original heat exchanger does not need to be moved or moved when an old system is transformed.

2. The steam-driven heater fully utilizes the enthalpy of the steam, greatly improves the heat exchange efficiency (close to 100 percent), obviously reduces the energy loss and saves the steam by more than 10 percent.

3. The electric power is saved, and the electric power can be saved by 50-85% because the pneumatic heater has a supercharging effect and can save a circulating pump or be replaced by a low-power pump.

4. The steam-driven heater is convenient to maintain, the traditional heat exchanger can generate scale, the scale removal, maintenance and repair are required to be carried out regularly, time and labor are wasted, the steam-driven heater does not have the problem of scale removal at all, professional personnel are not required to manage and maintain, and the steam-driven heater is very convenient to maintain. High efficiency, easy operation and less investment.

5. The investment is saved, and for newly-built heat exchange stations and hot water supply systems, the steam-driven heater has small volume and small occupied area, and is convenient to install, so that the capital cost and the equipment purchase cost can be greatly saved.

6. Has the function of a heat flow calculator.

7. Can be started and stopped instantly, is convenient to control and saves energy.

8. The equipment is small in size, light in weight and convenient to install and maintain.

9. The heat transfer coefficient is close to 1.

Drawings

Fig. 1 is a schematic view of the external structure of a supersonic pneumatic heater according to the present invention.

Fig. 2 is a schematic view of the internal structure of a supersonic pneumatic heater according to the present invention.

Fig. 3 is a schematic view of a pressure variation structure of a supersonic pneumatic heater according to the present invention.

As shown in the figure: 1. the device comprises a device main body, 2, a steam spray pipe, 3, a steam-water two-phase flow pipe, 4, a diffuser pipe, 5, a steam inlet, 6, a cold water inlet pipe, 7, a hot water outlet, 8, a first flow control valve, 9 and a second flow control valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to the attached drawings 1-3, the supersonic steam-driven heater comprises a device body 1, wherein a steam spray pipe 2, a steam-water two-phase flow pipe 3 and a diffuser pipe 4 are sequentially connected from left to right inside the device body 1, a steam inlet 5 is formed in the end part of the steam spray pipe 2, a cold water inlet pipe 6 is connected to the top of one end, close to the steam spray pipe 2, of the steam-water two-phase flow pipe 3, and a hot water outlet 7 is formed in one end, far away from the steam-water two-phase flow pipe 3, of the diffuser pipe 4.

The steam spray pipe 2 and the diffuser pipe 4 are both in a conical bottle shape, and the steam-water two-phase flow pipe 3 is in a funnel shape.

The steam inlet 5 and the cold water inlet pipe 6 are respectively connected with a first flow control valve 8 and a second flow control valve 9.

In the specific implementation of the utility model, the steam entering the steam-driven heater is adiabatically expanded in the steam nozzle 2 to be sprayed at supersonic speed, is mixed with the incoming cold water in the two-phase steam-water flow pipe 3, thus producing a mixture of steam and water with a certain calculated volume ratio, in the research of the steam-water two-phase flow, the sound velocity in the steam-water mixture is found to be greatly lower than that in steam (can be as low as 5-10 m/s) when a certain volume ratio is met, the flowing speed (30-40 m/s) of the mixture in the steam-driven heater exceeds the sound velocity value of the mixture, therefore, the sound barrier can be overcome in the section with the narrow contraction section, the flow speed in the pipeline with the constant section is converted to the subsonic speed, the pressure shock wave is generated at the moment, the pressure is increased rapidly, as a result, the pressure of the output mixture can greatly exceed the vapor pressure, thereby achieving pressurization and instantaneous heating.

The operation principle of the steam-driven heater is substantially different from that of the conventional steam ejector, and thus, the steam-driven heater also has a significant difference in function. From the performance point of view, if the absolute pressure of the steam is lower than 2 times of the absolute pressure of the inlet water, the steam cannot be fully expanded to generate a higher flow rate, so that the equipment cannot work normally, a larger circulating power cannot be provided, and the outlet water pressure higher than the steam pressure cannot be provided.

In the steam-water two-phase flow pipe 3, the very even steam-water mixture, under the supersonic velocity condition, along with the heat and mass transfer process, has accomplished the exchange of kinetic energy, has obtained the higher velocity energy, change from supercritical to subcritical state subsequently, under the effect of the shock wave, the velocity energy sudden change becomes the pressure energy, the pressure that obtains under certain condition, probably exceeds the initial pressure of steam completely, this steam-driven heater is designed according to "the maximum lift principle", the lift is great, the energy of the original noise that produces is utilized, so the noise has also been reduced, because the increase of lift, the adaptation occasion that the reduction of noise made is wider, the performance is more perfect.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A supersonic steam-driven heater comprising a device body (1), characterized in that: the device main part (1) inside connect gradually from a left side to a right side and be equipped with steam spray tube (2), two-phase flow tube of soda (3) and diffuser pipe (4), steam spray tube (2) tip be equipped with steam inlet (5), two-phase flow tube of soda (3) be close to steam spray tube (2) one end top and connect and be equipped with cold water inlet tube (6), diffuser pipe (4) keep away from the one end of two-phase flow tube of soda (3) and be equipped with hot water delivery port (7).

2. A supersonic steam-operated heater as defined in claim 1 wherein: the steam spray pipe (2) and the diffuser pipe (4) are both in a conical bottle shape, and the steam-water two-phase flow pipe (3) is funnel-shaped.

3. A supersonic steam-operated heater as defined in claim 1 wherein: and the steam inlet (5) and the cold water inlet pipe (6) are respectively connected with a first flow control valve (8) and a second flow control valve (9).