CN213932117U

CN213932117U - Steam-water mixed heater

Info

Publication number: CN213932117U
Application number: CN202022812290.3U
Authority: CN
Inventors: 陈帅
Original assignee: Nantong Hongda Petrochemical Equipment Manufacturing Co ltd
Current assignee: Nantong Hongda Petrochemical Equipment Manufacturing Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-10
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a soda mixed heater belongs to heat exchange equipment's technical field. The utility model discloses a mixed heater of soda includes the casing and sets up admission pipe, inlet tube and the outlet pipe on the casing, sets up Laval form spray tube in the casing, and coaxial setting between inlet tube, Laval form spray tube and the outlet pipe, annular space between casing and the Laval spray tube form steam cavity, sets up a plurality of oblique through-holes on the lateral wall of Laval form spray tube, sets up the filter on the admission pipe. The utility model discloses a soda mixed heater heat exchange efficiency is high, and soda misce bene, the noise is low and easily clear up the foul and be convenient for routine maintenance.

Description

Steam-water mixed heater

Technical Field

The utility model belongs to the technical field of indirect heating equipment, in particular to soda hybrid heater.

Background

Steam-water mixed heater is a novel steam direct heating device, utilizes DLT steam-water mixed heater convection serial ports pipeline to realize that steam and liquid let in two-way to realize that steam directly heats liquid (like water). But has the characteristics of little noise and vibration, high thermal efficiency and the like, and is widely applied to systems for heating domestic and production hot water, deoxidizing hot water and the like. At present, impurities or dirt in a shell of a steam-water mixed heater on the market are not easy to clean after the steam-water mixed heater is used for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a soda water mixing heater aims at solving one or more among the above-mentioned technical problem.

The utility model discloses mixed heater of soda includes the casing and sets up admission pipe, inlet tube and the outlet pipe on the casing, sets up Laval form spray tube in the casing, and coaxial setting between inlet tube, Laval form spray tube and the outlet pipe, annular space between casing and the Laval spray tube form the steam cavity, sets up a plurality of oblique through-holes on the lateral wall of Laval form spray tube, sets up the filter on the admission pipe.

By adopting the technical scheme, the steam is sprayed into the water through the inclined through hole on the Laval-shaped spray pipe, the steam and the water to be heated are mixed instantly and well in the high-speed flowing process, so that the aim of heating the water to be heated is fulfilled, and the filter can be used for intercepting dirt carried in the steam.

In some embodiments, a drain is provided at the bottom of the housing.

By adopting the technical scheme, the dirt which cannot be intercepted by the filter is discharged from the drain outlet after being sunk to the bottom of the shell, and the maintenance is convenient.

In some embodiments, the filter is a screen, and the screen is provided with a plurality of filter holes.

In some embodiments, the vapor chamber is filled with a dunnage material.

Through adopting above-mentioned technical scheme, the noise of heater is low.

In some embodiments, the angle between the axis of the angled through bore and the axis of the laval nozzle is between 35 ° and 60 °.

By adopting the technical scheme, the steam and water are mixed more sufficiently and uniformly.

In some embodiments, the pressure of the steam entering the steam chamber through the steam inlet pipe is greater than 0.05MPa of the pressure of the water entering the heater to be heated through the water inlet pipe.

In some embodiments, the head loss is 5mH at rated flow when the heater is not steaming₂O; after the steam was let in, the head loss was 1mH₂O。

In some embodiments, the laval nozzle is a reducer, a throat and a reducer in sequence along the water flow direction, the reducer and the reducer are respectively communicated with the water inlet pipe and the water outlet pipe, and the oblique through hole is formed in the reducer.

By adopting the technical scheme, steam is sprayed into the divergent pipe of the Laval-shaped spray pipe through the inclined through hole; the flow velocity of water to be heated is increased after the water enters the throat of the Laval-shaped spray pipe from the water inlet pipe through the reducing pipe, the flow velocity reaches the maximum at the position of the throat, the water is sprayed out at the position of the increasing pipe at a high speed, the flow velocity is reduced, the water and the sprayed steam are instantly and fully mixed in high-speed flowing, the steam transfers heat to the water to be heated, the water temperature is increased to form hot water, the steam is cooled and condensed into water, the water is mixed into the water to be heated, the hot water temperature is more uniform through steam-water mixing heat exchange, and finally the hot water flows out of the water outlet pipe.

Compared with the prior art, the utility model discloses a soda mixed heater heat exchange efficiency is high, and soda misce bene, the noise is low and easily clear up the foul smell and be convenient for routine maintenance.

Drawings

Fig. 1 is a schematic structural view of the steam-water mixing heater of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural diagram of a first embodiment of applying the steam-water mixed heater of the present invention to a unidirectional open heating system;

fig. 4 is a schematic structural diagram of a second embodiment of applying the steam-water mixed heater of the present invention to an unidirectional open heating system.

The following description is marked in the drawings: the device comprises a steam-water mixing heater 100, a shell 1, a water inlet pipe 2, a water outlet pipe 3, a steam inlet pipe 4, a Laval-shaped spray pipe 5, a reducing pipe 51, a throat 52, a reducing pipe 53, an inclined through hole 54, a steam cavity 6, a filler 7, a filter 8, a pollution discharge plug 9, a steam gate valve 10, an adjusting valve 11, a check valve 12, an overflow valve 13 and a spray head 14.

Detailed Description

To facilitate understanding of the present invention by those skilled in the art, the present invention will be further described with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.

Fig. 1 to 2 schematically show a steam-water mixing heater of the present invention.

As shown in fig. 1 to 2, the steam-water mixing heater of the present invention comprises a casing 1, a water inlet pipe 2 and a water outlet pipe 3 are respectively disposed at two ends of the casing 1, and a steam inlet pipe 4 is disposed at the top of the casing 1. A Laval nozzle 5 is arranged in the shell 1 and is placed along the horizontal direction. The inlet tube 2, the Laval-shaped spray tube 5 and the outlet tube 3 are coaxially arranged, the annular space between the shell 1 and the Laval-shaped spray tube forms a steam cavity 6, and the damping filler 7 used for reducing the noise of the heater is filled in the steam cavity 6. Wherein, the laval nozzle 5 is sequentially provided with a reducing pipe 51, a throat 52 and a diverging pipe 53 along the water flow direction, and the reducing pipe 51 and the diverging pipe 53 are respectively communicated with the water inlet pipe 2 and the water outlet pipe 3. The divergent pipe 53 is provided with a plurality of inclined through holes 54. When the water heater is used, steam is sprayed into the divergent pipe 53 of the Laval nozzle 5 through the inclined through hole 54, the flow rate of water to be heated is increased after the water enters the throat 52 of the Laval nozzle 5 through the convergent pipe 51 from the water inlet pipe 2, the flow rate reaches the maximum at the position of the throat 52, then the water is sprayed out at the divergent pipe 53 at a high speed, the flow rate is reduced and is instantly and fully mixed with the sprayed steam in high-speed flowing, the steam transmits heat to the water to be heated, the water temperature is increased to form hot water, the steam is cooled and condensed into water, the water is mixed into the water to be heated, the hot water temperature is more uniform through steam-water mixing heat exchange, and finally the hot water flows out of the water outlet pipe 3. The angle between the axis of the oblique through hole 54 and the horizontal axis of the laval nozzle 5 is 35-60 deg.. Preferably, the angle between the axis of the oblique through hole 54 and the horizontal axis of the laval nozzle 5 is 45 ° so that the steam is mixed more thoroughly and uniformly with the water. If the included angle is smaller, the steam is not sprayed into the water longitudinally to a sufficient depth, and is not fully mixed with the water, so that the phenomenon of temperature stratification is caused, namely the water temperature at the periphery is high and the water temperature at the interior is low; if the angle is too large, the steam flow will block the flow of water.

The steam inlet pipe 4 is provided with a filter which is a filter screen 8, and the filter screen 8 is provided with a plurality of filter holes. The filter may be used to retain dirt carried in the steam. The bottom of the shell 1 is provided with a sewage draining outlet, and a sewage draining plug 9 is arranged on the sewage draining outlet. Dirt which cannot be intercepted by the filter sinks into the bottom of the shell 1, and then the dirt discharging plug 9 can be opened to be discharged from the dirt discharging port, so that the maintenance is convenient.

The steam-water mixed heater of the utility model is higher than the water pressure of water to be heated, which enters the heater through the inlet tube, by 0.05MPa of the steam pressure of the steam entering the steam cavity 6 through the steam inlet tube. When the heater is not filled with steam, the head loss is 5mH under the rated flow₂O; after the steam was let in, the head loss was 1mH₂O。

Fig. 3 is a schematic structural diagram of an embodiment of applying the steam-water mixed heater of the present invention to a one-way open heating system. As shown in fig. 3, the system includes the steam-water mixing heater 100 of the present invention, and a steam gate valve 10, a regulating valve 11 and a check valve 12 sequentially connected to the steam inlet pipe 4 of the steam-water mixing heater 100. The amount of steam is controlled by adjusting the valve 11 so that the temperature of the hot water can be controlled.

Fig. 4 is a schematic structural view of the embodiment ii of the one-way open heating system using the steam-water mixed heater of the present invention. As shown in fig. 4, the system differs from embodiment 3 in that: an overflow valve 13 and a spray head 14 are arranged on a water outlet pipe 3 of the steam-water mixing heater 100, and the spray head 14 can be used for hot water showering.

In addition, the utility model discloses a mixed heater of soda still can use in the circulation heating system, for example reaction tank liquid circulation heating system and swimming pool circulation heating system etc..

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A mixed steam-water heater is characterized in that: be in including casing and setting inlet tube, inlet tube and outlet pipe on the casing, set up the laval form spray tube in the casing, the inlet tube the laval form spray tube with coaxial setting between the outlet pipe, the casing with annular space between the laval spray tube forms the steam cavity, set up a plurality of oblique through-holes on the lateral wall of laval form spray tube, set up the filter on the inlet tube.

2. The steam-water mixing heater of claim 1, wherein: and a sewage draining outlet is formed in the bottom of the shell.

3. The steam-water mixing heater according to claim 1 or 2, wherein: the filter is a filter screen, and a plurality of filter holes are formed in the filter screen.

4. The steam-water mixing heater of claim 1, wherein: and the steam cavity is filled with shock absorption packing.

5. The steam-water mixing heater of claim 1, wherein: the included angle between the axis of the inclined through hole and the horizontal axis of the Laval-shaped nozzle is 35-60 degrees.

6. The steam-water mixing heater of claim 1, wherein: the steam pressure entering the steam cavity through the steam inlet pipe is 0.05MPa higher than the water pressure of water to be heated entering the heater through the water inlet pipe.

7. The steam-water mixing heater of claim 1, wherein: when the heater is not filled with steam, the head loss is 5mH under the rated flow₂O; after the steam was let in, the head loss was 1mH₂O。

8. The steam-water mixing heater of claim 1, wherein: the laval-shaped nozzle is sequentially provided with a reducing pipe, a throat and a gradually expanding pipe along the water flow direction, the reducing pipe and the gradually expanding pipe are respectively communicated with the water inlet pipe and the water outlet pipe, and the inclined through hole is formed in the gradually expanding pipe.