CN209745086U

CN209745086U - Anti-corrosion heat exchanger

Info

Publication number: CN209745086U
Application number: CN201920520834.3U
Authority: CN
Inventors: 吕学彦; 曹韧; 葛炯威
Original assignee: Ningbo Bochuan Waste Liquor Treatment Co Ltd
Current assignee: Ningbo Bochuan Waste Liquor Treatment Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2019-12-06
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses an anticorrosion heat exchanger, including upper cover, low head and casing, it is fixed with the casing top that the upper cover bottom is passed through the screw, and the casing top leads to the screw and is fixed with the low head, install graphite heat transfer piece in the casing, the utility model discloses set up waste fitting discharging in the low head to drive through rotating sealed lid and scrape wall pole and blowdown board and rotate, can carry out effectual scraping to low head bottom inner wall, thereby can prevent effectively that liquid is detained in the low head and produces deposit and corrode the heat exchanger.

Description

Anti-corrosion heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field specifically is anticorrosion heat exchanger.

background

The heat exchanger is a device for transferring part of heat of a hot fluid to a cold fluid or transferring heat of the cold fluid to the hot fluid, and is also called as a heat exchanger. The tubular heat exchanger has mature technology and convenient maintenance, so the tubular heat exchanger is widely applied to various industries such as petrochemical industry, steel, textile industry, chemical fiber industry, pharmacy and the like. The heat exchanger is widely applied in various industries, so that the maintenance probability is more and more extensive, particularly, the damage forms of the heat exchanger are different due to different physics and chemistry of heat exchange media, and the problem of corrosion of the heat exchanger is always a troublesome problem for petrochemical enterprises as the damage of 90 percent of the heat exchanger is caused by corrosion according to worldwide reports.

The reasons for corrosion of the heat exchanger are various, mainly including corrosion abrasion on the surface of the heat exchanger, electrochemical corrosion caused by deposits, corrosion on the water side of the heat exchange pipe and the like, the deposits are easily formed when a medium flows unevenly or stays, cracks and gaps are formed at certain positions due to discontinuous, infirm and uneven deposits, electrochemical corrosion is formed due to difference of oxygen inside and outside the cracks, and the deposits inside the heat exchanger are difficult to clean due to welding assembly of the heat exchanger, so that the inside of the heat exchanger is easily corroded.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anticorrosion heat exchanger to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the anti-corrosion heat exchanger comprises an upper end enclosure, a lower end enclosure and a shell, wherein the bottom of the upper end enclosure is fixed with the top of the shell through a screw, the top of the shell is fixed with the lower end enclosure through a screw, and a graphite heat exchange block is arranged in the shell.

preferably, sealing rings are fixed at the joints of the upper end enclosure and the lower end enclosure and the two ends of the shell.

Preferably, a first liquid inlet and a first liquid outlet are respectively formed in the top and the bottom of one side of the shell, a second liquid inlet is formed in the top of the upper sealing head, a second liquid outlet is formed in one side of the lower sealing head, a blow-off pipe is fixedly communicated with the bottom of the lower sealing head, and a blow-off device is installed in the lower sealing head.

Preferably, waste fitting discharging comprises sealed lid, fixed column, blowdown board and wall scraping rod, open the blow off pipe outside has the external screw thread, and is carved with the internal thread in the sealed lid, and sealed lid passes through internal thread and blow off pipe threaded connection, the fixed column is fixed in sealed lid, blowdown board and wall scraping rod all are equipped with threely, and the impartial angle of three blowdown board and three wall scraping rod is fixed in the fixed column outside.

Preferably, a scraper is fixed on the outer side of the wall scraping rod, the outer side of the scraper is in sliding connection with the inner wall of the sewage discharge pipe, and contact plates are fixed at the bottoms of the sewage discharge plates.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The utility model discloses set up waste fitting discharging in the low head to scrape wall pole and blowdown board rotation through the sealed lid drive of rotation, can carry out effectual scraping to low head bottom inner wall, thereby can prevent effectively that liquid is detained in the low head and produces deposit and corrode the heat exchanger.

2. The utility model discloses a scraper blade and blow off pipe inner wall contact and contact plate and the contact of low head bottom inner wall to the realization strikes off of deposit in to the low head.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

Fig. 2 is the structural schematic diagram of the sewage discharging device in the lower head of the utility model.

In the figure: 1, sealing an end socket; 2-lower end enclosure; 3-a shell; 4-a first liquid inlet; 5-a first liquid outlet; 6-a second liquid inlet; 7-a second liquid outlet; 8-a sewage draining pipe; 9-a sewage draining device; 10-sealing cover; 11-fixed column; 12-a pollution discharge plate; 13-wall scraping rod; 14-a scraper; 15-contact plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the anti-corrosion heat exchanger shown in the figure comprises an upper end enclosure 1, a lower end enclosure 2 and a shell 3, wherein the bottom of the upper end enclosure 1 is fixed with the top of the shell 3 through a screw, the top of the shell 3 is fixed with the lower end enclosure 2 through a screw, a graphite heat exchange block is installed in the shell 3, and compared with the existing metal heat exchange tube, the graphite heat exchange block has a better anti-corrosion effect.

Sealing rings are fixed at the joints of the two ends of the upper end enclosure 1, the lower end enclosure 2 and the shell 3, so that the sealing performance of the sealing rings is ensured.

First inlet 4 and first liquid outlet 5 have been opened respectively to 3 one side tops of casing and bottom, 1 top of upper cover is opened there is second inlet 6, and 2 one sides of low head are opened there is second liquid outlet 7, 2 bottom intercommunications of low head are fixed with blow off pipe 8, and install waste fitting discharging 9 in the low head 2, let in and flow out the medium through first inlet 4 and first liquid outlet 5, let in and flow out another medium through second inlet 6 and second liquid outlet 7.

The sewage discharging device 9 is composed of a sealing cover 10, a fixing column 11, a sewage discharging plate 12 and a wall scraping rod 13, wherein an external thread is arranged on the outer side of the sewage discharging pipe 8, an internal thread is carved in the sealing cover 10, the sealing cover 10 is in threaded connection with the sewage discharging pipe 8 through the internal thread, the fixing column 11 is fixed in the sealing cover 10, the sewage discharging plate 12 and the wall scraping rod 13 are all three, the three sewage discharging plates 12 and the three wall scraping rods 13 are fixed on the outer side of the fixing column 11 at equal angles, and sediments in the lower sealing head 2 can be effectively scraped through the sewage discharging device 9.

The specific implementation mode is as follows: after heat exchange for a period of time, because the bottom of the lower end enclosure 2 always has fluid, after long-time heat exchange, the fluid inevitably generates deposit through detention, because the deposit is discontinuous, infirm and uneven, cracks and gaps are formed at certain positions, electrochemical corrosion is formed due to difference of oxygen inside and outside the cracks, the inner wall of the lower end enclosure 2 can be corroded, at the moment, the sealing cover 10 is rotated, the sealing cover 10 is moved downwards, simultaneously along with the rotation of the sealing cover 10, the fixed column 11 fixed on the inner wall at the bottom of the sealing cover 10 is driven to rotate, so that the wall scraping rod 13 is rotated, the cleaning and scraping of the inner wall of the sewage discharge pipe 8 are realized through the scraper 14 fixed on the outer side of the wall scraping rod 13, simultaneously along with the rotation and downward movement of the sealing cover 10, the sewage discharge plate 12 can be moved downwards, and thereby the contact plate 15 fixed on the bottom of the sewage discharge, and rotate through contact plate 15, realize the clearance scraping to 2 bottom inner walls of low head, because 2 bottom inner walls of low head are the inclined plane, and thus impurity such as sediment that can make the scraping are discharged through blow off pipe 8 to can prevent effectively that liquid is detained in the low head 2 and produces sediment corruption heat exchanger.

Scrape the wall pole 13 outside and be fixed with scraper blade 14, and the scraper blade 14 outside and 8 inner wall sliding connection of blow off pipe, the bottom of blowdown board 12 all is fixed with contact plate 15, through scraper blade 14 and 8 inner wall contacts of blow off pipe and contact plate 15 and 2 bottom inner wall contacts of low head to the realization is to scraping off of deposit in the low head 2.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Anticorrosion heat exchanger, including upper cover (1), low head (2) and casing (3), its characterized in that: the bottom of the upper sealing head (1) is fixed with the top of the shell (3) through a screw, the top of the shell (3) is fixed with the lower sealing head (2) through a screw, and a graphite heat exchange block is installed in the shell (3).

2. The corrosion-resistant heat exchanger of claim 1, wherein: and sealing rings are fixed at the joints of the upper end enclosure (1), the lower end enclosure (2) and the two ends of the shell (3).

3. The corrosion-resistant heat exchanger of claim 2, wherein: first inlet (4) and first liquid outlet (5) have been opened respectively to casing (3) one side top and bottom, it has second inlet (6) to open at upper cover (1) top, and lower cover (2) one side open has second liquid outlet (7), lower cover (2) bottom intercommunication is fixed with blow off pipe (8), and installs waste fitting discharging (9) in lower cover (2).

4. The corrosion-resistant heat exchanger of claim 3, wherein: blowdown apparatus (9) are by sealed lid (10), fixed column (11), blowdown board (12) and scrape wall pole (13) and constitute, open in blowdown pipe (8) outside has the external screw thread, and sealed lid (10) are carved with the internal thread, and sealed lid (10) are through internal thread and blowdown pipe (8) threaded connection, fixed column (11) are fixed in sealed lid (10), blowdown board (12) all are equipped with threely with scraping wall pole (13), and the impartial angle of three blowdown board (12) and three wall pole (13) of scraping is fixed in fixed column (11) outside.

5. The corrosion-resistant heat exchanger of claim 4, wherein: scrape the wall pole (13) outside and be fixed with scraper blade (14), and scraper blade (14) outside and blow off pipe (8) inner wall sliding connection, blowdown board (12) bottom all is fixed with contact plate (15).