CN213238555U

CN213238555U - Pre-heater

Info

Publication number: CN213238555U
Application number: CN202021758918.XU
Authority: CN
Inventors: 陆琴
Original assignee: Shanghai Yileng Teyi Pressure Vessel Co ltd
Current assignee: Shanghai Yileng Teyi Pressure Vessel Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-05-18
Anticipated expiration: 2030-08-21

Abstract

The application relates to a pre-heater relates to the field of pre-heater, its characterized in that: the device comprises an upper preheater and a lower preheater, wherein the upper preheater and the lower preheater respectively comprise heat exchange tubes and material tubes which are sleeved with each other, the heat exchange tubes on the upper preheater and the lower preheater are communicated through heat exchange medium communicating tubes, and the material tubes on the upper preheater and the lower preheater are communicated through material communicating tubes; a plurality of baffles are arranged on the inner side wall of the heat exchange tube at intervals, a heat exchange medium diversion port is arranged between each baffle and the inner side wall of the heat exchange tube, and the heat exchange medium diversion ports at the adjacent baffles are oppositely arranged; the material pipe is fixedly arranged on the baffle in a penetrating way. The baffle in this application has the effect of improving the heat transfer efficiency of preheater.

Description

Pre-heater

Technical Field

The application relates to the field of preheaters, in particular to a preheater.

Background

The preheater is an energy-saving device for transferring heat between two or more than two fluids with different temperatures, and is one of the main devices for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions and improve the utilization rate of energy.

At present, the heat exchanger is suitable for preheaters with different media, different working conditions, different temperatures and different pressures, has different structural types, and is roughly divided into a dividing wall type heat exchanger, a heat accumulating type heat exchanger, a fluid connection indirect type heat exchanger, a direct contact type heat exchanger, a compound heat exchanger and the like. The dividing wall type heat exchanger is characterized in that cold fluid and hot fluid are separated by a layer of solid wall surface (a pipe or a plate) and are not mixed, heat exchange is carried out through dividing walls, however, in the actual use process, a heat exchange pipe is sleeved on a material pipe, and a heat exchange medium is easy to rapidly lead out from the heat exchange pipe, so that the heat exchange medium and the material in the material pipe cannot be fully conducted, and the heat exchange efficiency is poor.

In view of the above-mentioned related art, the inventors considered that there was a drawback that the heat transfer effect of the preheater was not good.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem that the heat conduction effect is not good for the preheater.

The utility model provides a preheater adopts following technical scheme:

a preheater comprises an upper preheater and a lower preheater, wherein the upper preheater and the lower preheater respectively comprise heat exchange tubes and material tubes which are sleeved with each other, the heat exchange tubes on the upper preheater and the lower preheater are communicated through a heat exchange medium communicating pipe, and the material tubes on the upper preheater and the lower preheater are communicated through a material communicating pipe; a plurality of baffles are arranged on the inner side wall of the heat exchange tube at intervals, a heat exchange medium diversion port is arranged between each baffle and the inner side wall of the heat exchange tube, and the heat exchange medium diversion ports at the adjacent baffles are oppositely arranged; the material pipe is fixedly arranged on the baffle in a penetrating way.

By adopting the technical scheme, when the preheater operates, the heat exchange medium enters from the heat exchange tube of the upper preheater, flows along the heat exchange medium diversion port formed by the baffle and the heat exchange tube, flows into the heat exchange tube in the lower preheater through the heat exchange medium communicating tube, then continues to flow along the heat exchange medium diversion port formed by the baffle and the heat exchange tube, and is finally discharged from the heat exchange tube of the lower preheater. The material gets into in the material pipe from lower preheater, flows into the material pipe of upper preheater through material communicating pipe in, and the material pipe discharge of last preheater is followed at last. So set up, the heat transfer medium water conservancy diversion mouth of adjacent baffle department sets up relatively, is favorable to making the material in heat transfer medium and the material pipe carry out abundant heat-conduction, and then can improve the heat exchange efficiency of pre-heater.

Preferably, the baffle is provided with a sliding rod in a penetrating and sliding manner, the sliding rod is provided with a scraping ring for scraping dirt on the outer side wall of the material pipe, the scraping ring is sleeved on the material pipe in a sliding manner, and the upper preheater and the lower preheater are respectively provided with a driving mechanism for driving the sliding rod to reciprocate; the heat exchange tube is provided with an opening and closing door for cleaning and scraping off dirt.

Through adopting above-mentioned technical scheme, when clearing up the dirt on the material pipe lateral wall, actuating mechanism operates and drives the slide bar and carry out reciprocating sliding on the baffle, and then drive the scraping ring on the slide bar and carry out reciprocating motion on the material pipe lateral wall, thereby strike off the dirt on the material pipe lateral wall, the dirt after striking off passes through the door that opens and shuts on the heat exchange tube and discharges, and then at pre-heater operation in-process, the heat conduction effect of material pipe wall has been improved, be favorable to improving the heat exchange efficiency of pre-heater.

Preferably, the heat exchange medium communicating pipe and the material communicating pipe are provided with heat insulating layers on the surfaces thereof.

Through adopting above-mentioned technical scheme, at the pre-heater operation in-process, the heat preservation has reduced the calorific loss of heat transfer medium communicating pipe and material communicating pipe department, is favorable to improving the heat exchange efficiency of pre-heater.

Preferably, the upper preheater and the lower preheater are arranged between the heat exchange tube and the material tube and are provided with fixing rods, and the baffle plates are detachably arranged on the fixing rods.

Through adopting above-mentioned technical scheme, at the pre-heater operation in-process, the fixed rod is fixed the baffle, has improved the stability of baffle, when clearing up the baffle, can dismantle the baffle from the fixed rod, is convenient for to the washing of baffle. So set up, conveniently clear up the baffle, improved the application of pre-heater.

Preferably, a heat exchange medium inlet pipe is arranged at the inlet of the heat exchange pipe, a heat exchange medium outlet pipe is arranged at the outlet of the heat exchange pipe, and a temperature measuring device for measuring the temperature of the heat exchange medium is arranged at the heat exchange medium outlet pipe.

Through adopting above-mentioned technical scheme, when the pre-heater moves, heat transfer medium gets into from heat transfer medium import pipe, discharges from heat transfer medium outlet pipe at last, and the temperature measuring device of heat transfer medium outlet pipe measures the temperature of exhaust heat transfer medium, can judge the heat exchange efficiency of pre-heater according to the temperature that temperature measuring device recorded, can in time clear up the dirt of material pipe lateral wall when heat exchange efficiency is lower, has improved the heat conduction effect of material pipe wall, is favorable to improving the heat exchange efficiency of pre-heater.

Preferably, the heat exchange tubes of the upper preheater and the lower preheater are provided with viewing mirror ports.

Through adopting above-mentioned technical scheme, at the pre-heater operation in-process, can observe the formation condition of the dirt of material pipe lateral wall through the sight glass mouth, be convenient for in time clear up the dirt, improve the stability of the heat transfer effect of material pipe wall, be favorable to improving the heat exchange efficiency of pre-heater.

Preferably, the heat exchange tubes of the upper preheater and the lower preheater are provided with drain pipes.

Through adopting above-mentioned technical scheme, when clearing up the reloading pipe, the dirt that deposits in the cavity of reloading pipe both ends passes through the drain and discharges, is favorable to preventing that the dirt at both ends from being brought into the reloading intraductally, avoids the dirt at both ends to form new dirt on material pipe lateral wall, has improved the heat transfer process's of heat transfer medium and material stability, is favorable to improving the heat exchange efficiency of pre-heater.

Preferably, the outer pipes of the upper preheater and the lower preheater are provided with pressure measuring pipes and exhaust pipes.

Through adopting above-mentioned technical scheme, at the preheater operation in-process, through the pressure-measuring pipe pressure in the measurable heat transfer pipe, when the pressure in the heat transfer pipe is great, the accessible blast pipe exhausts, reduces the pressure in the heat transfer pipe, has improved the heat transfer process's of heat transfer medium and material stability.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the baffle plates are arranged in the heat exchange tube, so that the heat exchange medium diversion ports are formed between the baffle plates and the inner side wall of the heat exchange tube, and the heat exchange medium diversion ports at the adjacent baffle plates are oppositely arranged, so that the heat exchange effect of a heat exchange medium and a material can be improved, and the heat exchange efficiency of the preheater can be improved;

2. the material pipe is provided with the material pipe, the baffle plate is provided with the material pipe, the material pipe is provided with the material pipe, the baffle plate is provided with the material;

3. through set up the heat preservation on heat transfer medium communicating pipe and material communicating pipe, reduced the calorific loss of heat transfer medium communicating pipe and material communicating pipe department, be favorable to improving the heat exchange efficiency of pre-heater.

4. Through set up temperature measuring device on heat transfer medium outlet pipe, can judge heat exchange efficiency according to the temperature that records, be convenient for in time clear away the dirt of material pipe lateral wall, be favorable to improving the heat exchange efficiency of pre-heater.

Drawings

FIG. 1 is a schematic view of the overall structure of a preheater according to embodiment 1 of the present application;

FIG. 2 is a schematic sectional view of a preheater according to embodiment 1 of the present application;

FIG. 3 is a schematic view of the overall structure of a preheater according to embodiment 2 of the present application;

FIG. 4 is a schematic sectional view of a preheater according to embodiment 2 of the present invention.

Description of reference numerals: 1. an upper preheater; 2. a lower preheater; 3. a heat exchange pipe; 4. a material pipe; 5. a heat exchange medium communicating pipe; 6. a material communicating pipe; 7. a baffle plate; 8. a heat exchange medium diversion port; 9. a slide bar; 10. scraping rings; 11. a drive mechanism; 12. opening and closing the door; 13. a heat-insulating layer; 14. fixing the rod; 15. a heat exchange medium inlet pipe; 16. a heat exchange medium outlet pipe; 17. a temperature measuring device; 18. a viewing mirror port; 19. a blow-off pipe; 20. an exhaust pipe; 21. pressure measuring pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a preheater.

Example 1

Referring to fig. 1 and 2, the preheater includes an upper preheater 1 and a lower preheater 2 which are identical in length and parallel to each other, the upper preheater 1 and the lower preheater 2 are concentric sleeves made of cylindrical straight pipes having different diameters, an outer pipe is a heat exchange pipe 3, and an inner pipe is a material pipe 4.

The same end of the heat exchange tubes 3 of the upper preheater 1 and the lower preheater 2 is provided with a cylindrical heat exchange medium communicating tube 5, and the heat exchange tubes 3 of the upper preheater 1 and the lower preheater 2 are communicated through the heat exchange medium communicating tube 5. The same end of the material pipe 4 of the upper preheater 1 and the lower preheater 2 is provided with a cylindrical material communicating pipe 6, the material pipe 4 of the upper preheater 1 and the lower preheater 2 is communicated through the material communicating pipe 6, and the material communicating pipe 6 is embedded on the heat exchange pipe 3.

An annular cavity is formed between the heat exchange tube 3 and the material tube 4, a plurality of semi-annular baffles 7 are arranged on the inner side wall of the heat exchange tube at equal intervals, the number of the semi-annular baffles can be 10, and the baffles 7 are perpendicular to the heat exchange tube 3.

Be formed with semicircle annular heat transfer medium water conservancy diversion mouth 8 between baffle 7 and the heat exchange tube 3 inside wall, the relative crisscross setting of heat transfer medium water conservancy diversion mouth 8 of adjacent baffle 7 department, material pipe 4 wears to establish on baffle 7, is provided with like this and does benefit to the heat transfer effect that improves heat exchange tube 3 and material pipe 4, and then improves the heat exchange efficiency of pre-heater. Wear to be equipped with a plurality of cylindric dead levers 14 on the baffle 7, this embodiment can be for 6, and the dead lever is provided with the nut along the equidistant setting of circumference of baffle, and the dead lever is located baffle both sides screw thread, has improved the stability of baffle 7, at the pre-heater operation in-process, is favorable to guaranteeing the stability of pre-heater heat transfer process.

The heat exchange tube 3 of the upper preheater 1 is provided with a cylindrical heat exchange medium inlet tube 15 in the one end of the heat exchange medium communicating tube 5, the material tube 4 of the upper preheater 1 is provided with a cylindrical material outlet tube in the one end of the material tube close to the heat exchange medium inlet tube 15, the heat exchange medium inlet tube 15 and the material outlet tube are arranged adjacently, and the material outlet tube is embedded on the heat exchange tube 3. One end, far away from the heat exchange medium communicating pipe 5, of the heat exchange pipe 3 of the lower preheater 2 is communicated with a cylindrical heat exchange medium outlet pipe 16, one end, close to the heat exchange medium outlet pipe 16, of the material pipe 4 of the lower preheater 2 is communicated with a cylindrical material inlet pipe, and the material inlet pipe is embedded in the heat exchange pipe 3.

Go up pre-heater 1 and lower pre-heater 2 and go up the both ends intercommunication of heat exchange tube 3 and be provided with circular blow off pipe 19, at pre-heater operation in-process, blow off pipe 19 is used for discharging the dirt in the heat exchange tube 3 both ends cavity, is favorable to preventing that the dirt in the cavity of both ends from flowing along with heat transfer medium, guarantees the stability of pre-heater operation. The pipe body of the heat exchange pipe 3 is embedded with the circular viewing mirror port 18, the viewing mirror port 18 can observe the dirt forming condition on the outer side wall of the material pipe 4, so that the cleaning is convenient and timely, and the applicability of the preheater is improved. The pipe shaft middle part intercommunication of heat exchange tube 3 is provided with circular shape pressure-measuring pipe 21 and blast pipe 20, and at the pre-heater operation in-process, the accessible is connected the load cell on pressure-measuring pipe 21 and is surveyed the pressure in the heat exchange tube 3, and when heat exchange tube 3 internal pressure was great, carries out the exhaust decompression through blast pipe 20, and then is favorable to guaranteeing the stability of pre-heater operation.

The implementation principle of the embodiment 1 is as follows: when the preheater operates, a heat exchange medium enters the heat exchange tube 3 from the heat exchange medium inlet tube 15 of the upper preheater 1, flows along the heat exchange medium diversion port 8 formed by the baffle 7 and the heat exchange tube 3, flows into the heat exchange tube 3 in the lower preheater 2 through the heat exchange medium communicating tube 5, then continues to flow along the heat exchange medium diversion port 8 formed by the baffle 7 and the heat exchange tube 3, and is finally discharged from the heat exchange medium outlet tube 16 of the lower preheater 2. The material gets into in the material pipe 4 from the material import pipe of lower preheater 2, flows into the material pipe 4 of upper preheater 1 through material communicating pipe 6 in, and the material outlet pipe from upper preheater 1 is discharged at last. In the preheater operation process, the condition in the annular cavity is observed to the accessible sight glass mouth 18, and accessible pressure-measuring pipe 21 records the pressure in the heat exchange tube 3, and when pressure was great, accessible blast pipe 20 carried out exhaust decompression to heat exchange tube 3, guaranteed the stability of preheater operation, when clearing up baffle 7, can follow dead lever 14 with baffle 7 and dismantle, is convenient for wash baffle 7. So set up, the relative setting of heat transfer medium water conservancy diversion mouth 8 of adjacent baffle 7 department is favorable to making the material in heat transfer medium and the material pipe 4 carry out abundant heat-conduction, and then can improve the heat exchange efficiency of pre-heater.

Example 2

Referring to fig. 3 and 4, this embodiment and embodiment 1's difference lie in, wear to be equipped with cylindric slide bar 9 on the baffle 7 of going up preheater 1 and lower preheater 2, be connected with actuating mechanism 11 on the slide bar 9, the actuating mechanism 11 of this embodiment can be the cylinder, the annular scraping ring 10 of fixedly connected with ring on the slide bar 9, the scraping ring 10 is hugged closely the parcel on the lateral wall of material pipe 4, actuating mechanism 11 drive slide bar 9 reciprocating motion, and then drive the link reciprocating motion on 4 lateral walls of material pipe, clear away the dirt on 4 lateral walls of material pipe, the heat-conducting stability of 4 walls of material pipe has been guaranteed, be favorable to improving the heat exchange efficiency of preheater.

Go up heat exchange tube 3 of preheater 1 and be provided with a plurality of circular shape door 12 that open and shut on being close to a lateral wall of preheater tube down, this embodiment can be 5, heat exchange tube 3 of preheater 2 is provided with a plurality of circular shape door 12 that open and shut on keeping away from a lateral wall of preheater tube down, this embodiment can be 5, door 12 that opens and shuts is located between the double-phase adjacent baffle 7 of same lateral wall, be used for discharging the dirt of scraping off from 4 lateral walls of material pipe, at the preheater operation in-process, door 12 that opens and shuts is convenient for clear up the dirt between baffle 7.

Heat transfer medium communicating pipe 5 and material communicating pipe 6 wrap up on the surface has heat preservation 13, and the heat preservation 13 of this embodiment can be the lagging for heat transfer medium communicating pipe 5 and material communicating pipe 6 keep warm, and then at pre-heater operation in-process, reduce heat transfer medium communicating pipe 5 and material communicating pipe 6's calorific loss, improve the heat exchange efficiency of pre-heater.

The temperature measuring device 17 is arranged at the heat exchange medium outlet pipe 16, and the temperature measuring device 17 of the embodiment can be a thermometer and used for measuring the temperature of the discharged heat exchange medium, so that the heat exchange efficiency of the preheater can be judged according to the measured temperature in the running process of the preheater, and the stability of the heat exchange efficiency of the preheater is favorably ensured.

The implementation principle of the embodiment 2 is as follows: when clearing away the dirt on 4 lateral walls of material pipe, actuating mechanism 11 operates and drives slide bar 9 and carry out reciprocating sliding on baffle 7, and then drive scraping ring 10 on slide bar 9 and carry out reciprocating motion on 4 lateral walls of material pipe, thereby strike off the dirt on 4 lateral walls of material pipe, the dirt after striking off passes through the 12 discharges of opening and shutting door on the heat exchange tube 3, and then at the pre-heater operation in-process, the heat conduction effect of 4 pipe walls of material pipe has been improved, be favorable to improving the heat exchange efficiency of pre-heater. When heat transfer medium discharged from heat transfer medium outlet pipe 16, heat transfer medium's the temperature measuring device 17 of heat transfer medium outlet pipe 16 measured the temperature of discharged heat transfer medium, can judge the heat exchange efficiency of pre-heater according to the temperature that temperature measuring device 17 measured, can in time clear up the dirt of material pipe 4 lateral wall when heat exchange efficiency is lower, guarantee the heat exchange efficiency of pre-heater operation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A preheater, characterized by: the device comprises an upper preheater (1) and a lower preheater (2), wherein the upper preheater (1) and the lower preheater (2) respectively comprise heat exchange tubes (3) and material tubes (4) which are sleeved with each other, the heat exchange tubes (3) on the upper preheater (1) and the lower preheater (2) are communicated through heat exchange medium communicating tubes (5), and the material tubes (4) on the upper preheater (1) and the lower preheater (2) are communicated through material communicating tubes (6); a plurality of baffles (7) are arranged on the inner side wall of the heat exchange tube (3) at intervals, a heat exchange medium diversion port (8) is arranged between each baffle (7) and the inner side wall of the heat exchange tube (3), and the heat exchange medium diversion ports (8) at the adjacent baffles (7) are oppositely arranged; the material pipe (4) is fixedly arranged on the baffle plate (7) in a penetrating way.

2. A preheater as recited in claim 1, wherein: a sliding rod (9) is arranged on the baffle (7) in a penetrating and sliding mode, a scraping ring (10) used for scraping dirt on the outer side wall of the material pipe (4) is arranged on the sliding rod (9), the scraping ring (10) is sleeved on the material pipe (4) in a sliding mode, and driving mechanisms (11) for driving the sliding rod (9) to reciprocate are arranged on the upper preheater (1) and the lower preheater (2); the heat exchange tube (3) is provided with an opening and closing door (12) for cleaning and scraping dirt.

3. A preheater as recited in claim 1, wherein: and heat-insulating layers (13) are arranged on the surfaces of the heat-exchange medium communicating pipe (5) and the material communicating pipe (6).

4. A preheater as recited in claim 1, wherein: the upper preheater (1) and the lower preheater (2) are arranged between the heat exchange tube (3) and the material tube (4) and provided with fixing rods (14), and the baffle plates (7) are detachably arranged on the fixing rods (14).

5. A preheater as recited in claim 1, wherein: a heat exchange medium inlet pipe (15) is arranged at the inlet of the heat exchange pipe (3), a heat exchange medium outlet pipe (16) is arranged at the outlet of the heat exchange pipe (3), and a temperature measuring device (17) for measuring the temperature of the heat exchange medium is arranged at the heat exchange medium outlet pipe (16).

6. A preheater as recited in claim 1, wherein: and the heat exchange tubes (3) of the upper preheater (1) and the lower preheater (2) are provided with viewing mirror ports (18).

7. A preheater as recited in claim 1, wherein: and the heat exchange tubes (3) of the upper preheater (1) and the lower preheater (2) are provided with a sewage discharge tube (19).

8. A preheater as recited in claim 1, wherein: and the heat exchange tubes (3) of the upper preheater (1) and the lower preheater (2) are provided with exhaust pipes (20) and pressure measuring pipes (21).