CN210128642U

CN210128642U - Tubular heat exchanger

Info

Publication number: CN210128642U
Application number: CN201920929034.7U
Authority: CN
Inventors: 刘惠忠; 焦雨; 张念念
Original assignee: Dalian Goodwater Treatment Technology Co Ltd
Current assignee: Dalian Goodwater Treatment Technology Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-03-06
Anticipated expiration: 2029-06-20

Abstract

A tubular heat exchanger belongs to the technical field of heat exchange. The utility model provides a tubular heat exchanger, which comprises a shell, a medium inlet and a medium outlet are penetrated through the shell, a baffle is fixed in the shell, connecting plates are fixed at two ends of the shell, a plurality of heat exchange tubes are penetrated between the connecting plates, a first end cover and a second end cover are respectively fixed at the outer ends of the connecting plates, a partition plate is fixed in the first end cover, an inner sleeve is positioned at the inner side of the shell, a heat insulation layer is filled between the inner sleeve and the shell, a display screen is arranged outside the shell, a control panel is integrated in the display screen, a water inlet electromagnetic valve and a water return electromagnetic valve are respectively arranged on the water inlet tube and the water return tube, a cleaning tube is connected on the water inlet tube in a through way, a cleaning electromagnetic valve is arranged on the cleaning tube, a drain tube is connected on the water return tube in a through, the partition plate is provided with a pressure sensor.

Description

Tubular heat exchanger

Technical Field

The utility model belongs to the technical field of the heat exchange, especially, relate to a tubular heat exchanger.

Background

The tubular heat exchanger is a typical dividing wall type efficient heat exchange device, has wide application in industry, and is suitable for convective heat transfer among steam-steam, steam-liquid and liquid-liquid. From the economic perspective, water is not preferred as a heat exchanger refrigerant as an economical and easily-obtained energy source, but impurities and various salts in water cannot be completely removed, so that scaling and blockage in the heat exchanger often occur, water flow is not smooth, and the heat exchange effect is influenced. In addition, the tubular heat exchanger is particularly difficult to clean due to the special tubular structure, most enterprises and individuals can consider performing destructive acid washing on the heat exchanger only under the condition of seriously influencing production, the energy consumption of the enterprises and the profit of the enterprises are influenced due to the fact that the scale is not known to be generated, the scaling and blockage of the heat exchanger under the condition are generally serious, even the pipeline cannot be dredged or leakage is caused, and finally the heat exchanger can only be selected to be replaced with a new one.

Disclosure of Invention

To the problem that prior art exists, the utility model provides a tubular heat exchanger.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a tubular heat exchanger comprises a shell, heat exchange tubes, segmental baffle plates and two connecting plates, wherein a medium inlet and a medium outlet are formed in the shell in a penetrating manner, the baffle plates are fixed in the shell in an overlapping manner, the two ends of the shell are respectively fixed with the connecting plates, a plurality of heat exchange tubes penetrate between the two connecting plates and are parallel to each other, the heat exchange tubes are connected with the baffle plates and the connecting plates in a sealing manner, the outer ends of the two connecting plates are respectively fixed with a first end cover and a second end cover in a sealing manner, a partition plate is fixed in the first end cover and divides the space between the first end cover and the connecting plates into two parts, one part of the two parts is communicated with a water inlet tube fixed on the first end cover, and the other part of the two parts is communicated with a water return tube fixed on the first end cover, be located the casing inboard, set for with the casing equidistance, it has the insulating layer to fill between endotheca and the casing, the casing outside is provided with the display screen, the integration has the control panel in the display screen, and the display screen next door is provided with pilot lamp and physics button, be provided with into water solenoid valve and return water solenoid valve on inlet tube and the wet return respectively, through connection has the scavenge pipe on the inlet tube, the scavenge pipe is located between water solenoid valve and the first end cover, is provided with the washing solenoid valve on the scavenge pipe, through connection has the drain pipe on the wet return, the drain pipe is located between return water solenoid valve and the first end cover, is provided with the drainage solenoid valve on the drain pipe, be provided with pressure sensor on the division board, pressure sensor, the equal electricity of inlet solenoid valve, return water solenoid.

And a straight-line-shaped groove matched with the partition plate is formed in the connecting plate in contact with the first end cover, and a sealing strip is arranged in the groove.

The heat exchange tube and the inner sleeve are made of copper and stainless steel respectively.

And a temperature sensor is arranged at the medium outlet and is electrically connected with the display screen.

The water inlet electromagnetic valve is provided with a water inlet filter far away from the end of the shell, and the water return electromagnetic valve is provided with a water return filter far away from the end of the shell.

The pressure sensor is arranged close to the water inlet pipe.

The cleaning pipe is connected with a compressed air pipeline.

The utility model has the advantages that:

the utility model provides a tubular heat exchanger, this tubular heat exchanger inside is provided with pressure sensor, but the perception pressure of intaking's change to according to the variation of pressure of intaking, whether the selection carries out the structure clearance to heat exchanger inside, avoid long-term accumulation of incrustation scale, make rivers unobstructed in the pipeline, extension heat exchanger life reduces the energy resource consumption of enterprise. During cleaning, compressed air can be directly connected to the end of the cleaning pipe, the cleaning electromagnetic valve can be periodically opened and closed under the instruction of the control panel, water-air pulse vibration is formed in the pipeline, and scale can be vibrated down when small bubbles formed by the vibration are broken, so that the purpose of cleaning the scale in the pipeline is achieved.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a tube heat exchanger of the present invention;

FIG. 2 is a transverse cross-sectional view of the tube heat exchanger of the present invention;

FIG. 3 is a front view of the tube heat exchanger of the present invention;

in the figure: 1-shell, 2-heat exchange tube, 3-baffle, 4-connecting plate, 5-medium inlet, 6-medium outlet, 7-first end cover, 8-second end cover, 9-partition plate, 10-water inlet tube, 11-water return tube, 12-inner sleeve, 13-heat insulation layer, 14-display screen, 15-indicator light, 16-physical button, 17-water inlet electromagnetic valve, 18-water return electromagnetic valve, 19-cleaning tube, 20-cleaning electromagnetic valve, 21-water outlet tube, 22-water outlet electromagnetic valve, 23-pressure sensor, 24-groove, 25-sealing strip, 26-temperature sensor, 27-water inlet filter and 28-water return filter.

Detailed Description

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

As shown in fig. 1-3, a tubular heat exchanger belongs to heat exchange equipment and plays a role in heat conduction between media.

The utility model discloses a tubular heat exchanger includes casing 1, heat exchange tube 2, round shape baffling 3 and two connecting plates 4, runs through on the casing 1 and has seted up medium entry 5 and medium export 6, and 1 inside overlap of casing is fixed with baffling 3, and baffling 3 can force and enter into 1 inside fluid medium of casing from medium entry 5 and pass through the heat exchange tube according to the cross-flow many times of regulation route to reach better heat transfer purpose. The two ends of the shell 1 are respectively fixed with connecting plates 4, a plurality of heat exchange tubes 2 penetrate between the two connecting plates 4, the heat exchange tubes 2 are parallel to each other, the tube walls of the heat exchange tubes 2 are heat transfer surfaces, and fins can be additionally arranged on the tube walls of the heat exchange tubes 2 in other embodiments in order to increase the heat transfer area. The heat exchange tube 2 is connected with the baffle 3 and the connecting plates 4 in a sealing manner, the outer ends of the two connecting plates 4 are respectively fixedly provided with a first end cover 7 and a second end cover 8 in a sealing manner, a partition plate 9 is fixedly arranged in the first end cover 7, the partition plate 9 equally divides the space between the first end cover 7 and the connecting plates 4 into two parts, the situation that water inlet and water return are directly communicated in the first end cover 7 is avoided, one part of the water inlet and the water inlet tube 10 fixed on the first end cover 7 are communicated, and the other part of the water inlet and the water return are communicated with a water return tube 11 fixed on the first. The inner sleeve 12 is fixed between the two connecting plates 4 and is positioned on the inner side of the shell 1 and is set at the same distance with the shell 1, the heat-insulating layer 13 is filled between the inner sleeve 12 and the shell 1, and the heat-insulating layer 13 is filled in a hollow structure formed between the inner sleeve 12 and the shell 1, so that a good heat-insulating effect can be achieved, on one hand, the interference of the external environment temperature on the heat transfer effect inside the heat exchanger is avoided, and on the other hand, the display screen 14 outside the shell 1 and the internal electronic elements thereof can be effectively protected from the influence of the high temperature. The outside of the shell 1 is provided with a display screen 14, a control panel is integrated in the display screen 14, an indicator lamp 15 and a physical key 16 are arranged beside the display screen 14, the indicator lamp 15 can display whether a power supply is switched on or not, whether the operation is normal or not and whether an alarm is given, the physical key 15 can be matched with the display screen 14 to set and switch functions, and three modes of a working mode, simple cleaning and powerful cleaning are integrated in the control panel of the display screen 14. The water inlet pipe 10 and the water return pipe 11 are respectively provided with a water inlet electromagnetic valve 17 and a water return electromagnetic valve 18, and the water inlet electromagnetic valve 17 and the water return electromagnetic valve 18 can be controlled to be on or off by a control panel. The through connection has scavenge pipe 19 on inlet tube 10, and scavenge pipe 19 is located between intake solenoid valve 17 and first end cover 7, and scavenge pipe 19 can select to insert compressed air or washing liquid according to the condition, is provided with washing solenoid valve 20 on the scavenge pipe 19, and washing solenoid valve 20 can be by control panel control break-make. A drain pipe 21 is connected to the water return pipe 11 in a penetrating manner, the drain pipe 21 is located between the water return electromagnetic valve 18 and the first end cover 7, a drain electromagnetic valve 22 is arranged on the drain pipe 21, and the on-off of the drain electromagnetic valve 22 can be controlled by a control panel. The partition plate 9 is provided with a pressure sensor 23, and the pressure sensor 23 can sense the pressure change and feed back to the control board. The pressure sensor 23, the water inlet solenoid valve 17, the water return solenoid valve 18, the cleaning solenoid valve 20 and the water discharge solenoid valve 22 are electrically connected to the display screen 14.

On the connecting plate 4 with first end cover 7 contact, set up the style of calligraphy recess 24 with division board 9 matching, be provided with sealing strip 25 in the recess 24, division board 9 inserts in recess 24, can be more effective accurate divide into two cavitys with inside to sealing strip 25 can effectively prevent the rivers leakage in two cavitys.

The heat exchange tube 2 and the inner sleeve 12 are made of copper and stainless steel respectively, the heat transfer efficiency of the copper tube is higher, and the stainless steel can prevent the entering medium from being polluted.

A temperature sensor 26 is provided at the medium outlet 6, the temperature sensor 26 being electrically connected to the display screen 14 so as to feed back the monitored outlet temperature to the control board.

The end of the water inlet electromagnetic valve 17, which is far away from the shell 1, is provided with a water inlet filter 27, and the water inlet filter 27 can filter out part of large-particle impurities to ensure the water quality of inlet water; the end of the water return electromagnetic valve 18, which is far away from the shell 1, is provided with a water return filter 28, and the water return filter 28 can filter off fallen scale so as to prevent the scale from entering circulating water and influencing the water quality; the intake filter 27 and the return filter 28 need to be inspected periodically and cleaned or replaced.

The pressure sensor 23 is disposed near the water inlet pipe 10 for detecting the change of the water inlet pressure, in other embodiments, the pressure sensor may also be used for detecting the change of the pressure of the return water, and the same function may also be achieved.

The cleaning pipe 19 is connected with a compressed air pipeline, is matched with the control panel and the electromagnetic valve to generate pulse compressed air, and is used for scale cleaning work in a simple mode.

The following describes three operation modes of the present invention with reference to the drawings.

The working mode is as follows: in the mode, the control panel controls the cleaning electromagnetic valve 20 and the drainage electromagnetic valve 22 to be closed, the water inlet electromagnetic valve 17 and the water return electromagnetic valve 18 to be opened, when the pressure detected by the pressure sensor 23 in the first end cover 7 is increased and exceeds a set threshold value, the display screen 14 can send out a high-pressure alarm prompt, and a worker can find out whether a fault occurs or determine whether to clean the heat exchanger scale according to the prompt; when the pressure detected by the pressure sensor 23 is too low for a long time, the display screen 14 will send out a low-pressure alarm prompt, and the staff can check whether the water pump is in fault or whether the pipeline leaks according to the prompt, so as to eliminate the fault.

Simple cleaning mode: when the display screen 14 sends out a high-pressure alarm prompt, the simple cleaning mode can be selected to be switched to, in the mode, the cleaning pipe 19 needs to be connected with a compressed air pipeline, the control panel controls the water return electromagnetic valve 18 to be closed, the water discharge electromagnetic valve 22 and the water inlet electromagnetic valve 17 are opened, the cleaning electromagnetic valve 20 is periodically opened, at the moment, compressed air periodically entering the water inlet pipe 10 forms water-air pulse vibration in water, small bubbles formed by the vibration can shake down scales in the heat exchange pipe 2 when the small bubbles break, cleaning of the scales on the pipeline is achieved, and the fallen scales are discharged along with water flow through the water discharge pipe 21.

Powerful clearance mode: in the mode, the cleaning pipe 19 needs to be connected with a cleaning liquid pipeline, the control panel controls the water return electromagnetic valve 18 to be closed, and the water discharge electromagnetic valve 22, the cleaning electromagnetic valve 20 and the water inlet electromagnetic valve 17 to be opened.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A tubular heat exchanger comprises a shell, heat exchange tubes, segmental baffle plates and two connecting plates, wherein a medium inlet and a medium outlet are formed in the shell in a penetrating manner, the baffle plates are fixed in the shell in an overlapping manner, the two ends of the shell are respectively fixed with the connecting plates, a plurality of heat exchange tubes penetrate between the two connecting plates and are parallel to each other, the heat exchange tubes are connected with the baffle plates and the connecting plates in a sealing manner, the outer ends of the two connecting plates are respectively fixed with a first end cover and a second end cover in a sealing manner, a partition plate is fixed in the first end cover and divides the space between the first end cover and the connecting plates into two parts, one part of the two parts is communicated with a water inlet tube fixed on the first end cover, and the other part of the two parts is communicated with a water return tube fixed on the first end cover, be located the casing inboard, set for with the casing equidistance, it has the heat preservation to fill between endotheca and the casing, the casing outside is provided with the display screen, the integration has the control panel in the display screen, and the display screen next door is provided with pilot lamp and physics button, be provided with into water solenoid valve and return water solenoid valve on inlet tube and the wet return respectively, through connection has the scavenge pipe on the inlet tube, the scavenge pipe is located between water solenoid valve and the first end cover, is provided with the washing solenoid valve on the scavenge pipe, through connection has the drain pipe on the wet return, the drain pipe is located between return water solenoid valve and the first end cover, is provided with the drainage solenoid valve on the drain pipe, be provided with pressure sensor on the division board, pressure sensor, the equal electricity of inlet solenoid valve, return water solenoid.

2. The tube heat exchanger according to claim 1, wherein: and a straight-line-shaped groove matched with the partition plate is formed in the connecting plate in contact with the first end cover, and a sealing strip is arranged in the groove.

3. The tube heat exchanger according to claim 1, wherein: the heat exchange tube and the inner sleeve are made of copper and stainless steel respectively.

4. The tube heat exchanger according to claim 1, wherein: and a temperature sensor is arranged at the medium outlet and is electrically connected with the display screen.

5. The tube heat exchanger according to claim 1, wherein: the water inlet electromagnetic valve is provided with a water inlet filter far away from the end of the shell, and the water return electromagnetic valve is provided with a water return filter far away from the end of the shell.

6. The tube heat exchanger according to claim 1, wherein: the pressure sensor is arranged close to the water inlet pipe.

7. The tube heat exchanger according to claim 1, wherein: the cleaning pipe is connected with a compressed air pipeline.