CN111979584B

CN111979584B - Vertical biphenyl furnace

Info

Publication number: CN111979584B
Application number: CN202010846011.7A
Authority: CN
Inventors: 祁俊
Original assignee: Shanghai Langyin Pressure Vessel Co ltd
Current assignee: Shanghai Langyin Pressure Vessel Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-03-11
Anticipated expiration: 2040-08-21
Also published as: CN111979584A

Abstract

The application relates to a vertical biphenyl stove, include: the top of the furnace body is provided with an exhaust port, and a plurality of biphenyl inlets are arranged on the side wall of the furnace body at intervals along the axis direction of the furnace body; the baffle plates are arranged in the furnace body and fixedly connected with the inner wall of the furnace body, a plurality of baffle plates are distributed at intervals along the axis direction of the furnace body, independent cavities are formed between every two adjacent baffle plates, and the biphenyl inlets are positioned at the upper part of each cavity; the heating pipes are respectively arranged in each cavity and positioned between the partition plate and the biphenyl inlet, and two ends of each heating pipe respectively penetrate out of the furnace body; the air guide pipe is fixedly connected with the partition plates, the axis of the air guide pipe is superposed with the axis of the furnace body and sequentially penetrates through the partition plates, and the upper end of the air guide pipe is connected with the exhaust port; the wall of the air duct is provided with a plurality of groups of through holes at intervals along the axis, and each group of through holes are arranged close to the lower surface of the partition plate. The application can reduce the damage of the heat conduction oil to the pipeline and simultaneously facilitate the discharge of the heat conduction oil.

Description

Vertical biphenyl furnace

Technical Field

The application relates to the technical field of spinning heating devices, in particular to a vertical biphenyl furnace.

Background

In the spinning production, the temperature of a spinning box is required to be kept at 290 degrees to ensure that a melt is smoothly sprayed out from micropores of a spinneret plate, a biphenyl furnace is usually adopted for heating in the spinning process, after biphenyl is electrically heated to 290 degrees, gas-liquid phases exist in the system, gas phases flow to the spinning box from the biphenyl furnace to release latent heat, the spinning box is subjected to heat preservation, the biphenyl after heat release flows back to the biphenyl furnace to be continuously heated, and the circulation is carried out so that the temperature of the spinning box is always kept at a set value.

In the application process, related personnel find that the electric heating power consumption is higher, break away from the direction of energy-concerving and environment-protective, consequently, the spinning production is now more with the mode of electric heating change for the mode of conduction oil heating to the energy can be saved.

The inventor finds that when the mode of heating by using the heat conduction oil is adopted, the total length of the heat conduction oil coil pipe in the furnace body is larger due to larger volume of the furnace body, and when the heat conduction oil is introduced into a pipeline, the heat conduction oil is easy to generate a vortex phenomenon or an air hammer phenomenon at the bent part of the pipeline due to overlong movement path of the oil, so that the pipeline is strongly vibrated, and further the pipeline is broken at the weak part of a welding opening; in addition, the long oil pipe path can cause difficulty in completely discharging the heat conducting oil in the pipeline when the spinning operation is stopped.

Disclosure of Invention

In order to reduce the damage of the heat conduction oil to the pipeline and discharge the heat conduction oil in the pipeline when the heat conduction oil is stopped conveniently, the application provides a vertical biphenyl furnace.

The application provides a vertical biphenyl stove adopts following technical scheme:

a vertical biphenyl furnace comprising:

the top of the furnace body is provided with an exhaust port, and a plurality of biphenyl inlets are arranged on the side wall of the furnace body at intervals along the axis direction of the furnace body;

the baffle plates are arranged in the furnace body and fixedly connected with the inner wall of the furnace body, a plurality of baffle plates are distributed at intervals along the axis direction of the furnace body, independent cavities are formed between every two adjacent baffle plates, and the biphenyl inlets are positioned at the upper part of each cavity;

the heating pipes are respectively arranged in each cavity and positioned between the partition plate and the biphenyl inlet, and two ends of each heating pipe respectively penetrate out of the furnace body; and

the air guide pipe is fixedly connected with the partition plates, the axis of the air guide pipe is superposed with the axis of the furnace body and sequentially penetrates through the partition plates, and the upper end of the air guide pipe is connected with the exhaust port;

the heating pipe is internally provided with heat conducting oil, and steam can enter the air guide pipe through the through holes and is discharged from the air outlet.

Through adopting above-mentioned technical scheme, when heating the spinning case, at first add liquid biphenyl to every cavity through the biphenyl import, it is suitable to cross the heating pipe for the liquid level, then circulate to letting in the conduction oil in the heating pipe, heat the biphenyl to the gaseous state in every cavity, gaseous phase biphenyl collects through the through-hole and gets into in the air duct, and rise along the air duct and discharge from the gas vent, get into the spinning case, the biphenyl after exothermic becomes liquid and flows back to the biphenyl import again through the pipeline, leading-in each cavity. The furnace body is separated into independent cavities through the partition plate, the total length of the heating pipe in each cavity is effectively shortened, the flow path of the heat conduction oil is effectively shortened, the problem of pipeline vibration caused by reciprocating operation of the heat conduction oil in the pipeline is effectively solved, the heating pipe is effectively protected, the total volume of the heat conduction oil in the heating pipe is reduced, and the heat conduction oil in the pipeline is discharged after the heating is stopped conveniently.

Preferably, each group of through holes comprises a plurality of through holes which are uniformly arranged along the circumferential direction of the air guide pipe.

Through adopting above-mentioned technical scheme, the gas in the cavity encircles around the air duct, can get into simultaneously in the air duct through a plurality of through-holes, has increased gaseous discharge route.

Preferably, the top of each chamber is provided with a flow guide cover;

the inner edge of the air guide cover is fixedly connected with the pipe wall of the air guide pipe, the outer edge of the air guide cover is fixedly connected with the inner wall of the furnace body, the inner edge of the air guide cover is higher than the outer edge of the air guide cover in the axis direction of the furnace body, the inner edge of the air guide cover is located above the through hole, and the outer edge of the air guide cover is located above the biphenyl inlet.

By adopting the technical scheme, after the biphenyl is heated to a gas phase, the gas moves upwards along the inner wall surface of the flow guide cover and enters the gas guide pipe through the through hole, and the flow guide cover plays a role in directional guiding the movement of the gas flow, so that the gas is prevented from accumulating at the junction of the partition plate and the side wall of the furnace body.

Preferably, a jacket is fixedly arranged on the furnace body, and an interlayer is formed between the jacket and the outer wall of the furnace body.

Through adopting above-mentioned technical scheme, the intermediate layer can play the heat preservation effect to whole furnace body.

Preferably, the number of the clamping sleeves is multiple along the axial direction of the furnace body, the clamping sleeves correspond to the chambers respectively, and the upper end and the lower end of the side wall of each clamping sleeve are provided with openings respectively.

By adopting the technical scheme, the heat-conducting medium can pass through the jacket through the opening, so that the heat preservation effect is achieved, and meanwhile, the biphenyl in the furnace body can be heated in an auxiliary manner; meanwhile, the jackets are arranged in a layered mode, the heat-conducting medium can be respectively led into each jacket, the internal space of each jacket is reduced, and the heat loss of the heat-conducting medium along the way in the movement can be effectively reduced.

Preferably, the heating pipe is spirally arranged.

By adopting the technical scheme, the contact area between the heat conduction oil and the biphenyl can be increased, and the heat conduction efficiency is improved. And for the U-shaped coil pipe, the heating pipe is set to be spiral, so that the pipeline turning joint is smoother, and the phenomenon of 'swirl' or 'air hammer' in the pipeline can be avoided to a certain extent.

Preferably, gaps are formed among the heating pipe, the inner wall of the furnace body and the gas guide pipe.

Through adopting above-mentioned technical scheme, the heating pipe is located the central authorities of every cavity, and liquid biphenyl parcel is in the outside of heating pipe, and the heat that can make full use of heating pipe gived off improves the rate of heat to diffusion all around.

Preferably, still be equipped with the reinforcement subassembly on the heating pipe, the reinforcement subassembly interval is provided with the multiunit on the heating pipe, and every group reinforcement subassembly all includes:

the connecting plate is attached to the pipe wall of the heating pipe, and one end of the connecting plate is fixedly connected with the partition plate and is parallel to the air guide pipe;

the fixed rod is wrapped outside the heating pipe, two ends of the fixed rod respectively penetrate through the connecting plate, and threads are arranged at two ends of the fixed rod; and

and the nuts are respectively in threaded connection with two end parts of the fixing rod, and the side end faces of the nuts are tightly propped against the connecting plate.

Through adopting above-mentioned technical scheme, not only can fix the heating pipe on the baffle, can strengthen the rigidity of the spirochaeta that whole heating pipe formed moreover, prevent to shake at the in-process heating pipe that leads to heat oil.

In summary, the present application has the following beneficial technical effects:

when heating the spinning case, at first add liquid biphenyl to every cavity through the biphenyl import to the liquid level crosses the heating pipe as appropriate, then to the intraductal circulation of heating and lets in the conduction oil, with the biphenyl heating to the gaseous state in every cavity, gaseous phase biphenyl collects through the through-hole and gets into in the air duct, and rises along the air duct and discharge from the gas vent, gets into the spinning case, and the biphenyl after exothermic becomes liquid and flows back to the biphenyl import again through the pipeline, and leading-in each cavity. The furnace body is separated into independent cavities through the partition plate, the total length of the heating pipe in each cavity is effectively shortened, the flow path of the heat conduction oil is effectively shortened, the problem of pipeline vibration caused by reciprocating operation of the heat conduction oil in the pipeline is effectively solved, the heating pipe is effectively protected, the total volume of the heat conduction oil in the heating pipe is reduced, and the heat conduction oil in the pipeline is discharged after the heating is stopped conveniently.

Moreover, the heating pipes in each cavity are independent heating units, the adjacent cavities are independently heated, and heat exchange also exists between the adjacent cavities, so that the time for heating the liquid biphenyl of unit volume to the gas phase is shorter, and the heat transfer efficiency is improved.

Drawings

Fig. 1 is a schematic overall structure diagram according to an embodiment of the present application.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic structural view of the heating pipe in fig. 2.

In the figure, 1, a furnace body; 11. an exhaust port; 12. a biphenyl inlet; 2. a partition plate; 3. heating a tube; 4. an air duct; 41. a through hole; 5. a pod; 6. a jacket; 7. a reinforcement assembly; 71. a connecting plate; 72. fixing the rod; 73. and a nut.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1 and 2, a vertical biphenyl furnace disclosed in an embodiment of the present application includes a furnace body 1, a partition plate 2, a heating pipe 3, and a gas-guide pipe 4.

The section of the furnace body 1 is circular, and the bottom of the furnace body 1 is fixedly provided with supporting legs for supporting the furnace body 1; the top of the furnace body 1 is fixedly connected with an exhaust port 11 communicated with the interior of the furnace body, and specifically, the axis of the exhaust port 11 coincides with the axis of the furnace body 1.

The baffle 2 is a circular plate, and with the inner wall fixed connection of furnace body 1, the axis perpendicular to baffle 2 of furnace body 1, baffle 2 are provided with a plurality ofly in furnace body 1, and along furnace body 1's axis direction evenly distributed, all form independent cavity between two adjacent baffles 2, between baffle 2 and the roof of furnace body or between baffle 2 and the diapire of furnace body. The fixed biphenyl import 12 that is provided with on the lateral wall of furnace body 1, biphenyl import 12 all is equipped with one corresponding to every cavity, and biphenyl import 12 is located the upper portion of every cavity, can add biphenyl into every cavity through biphenyl import 12.

Heating pipe 3 respectively is equipped with a set ofly in every cavity, and heating pipe 3 is connected with the last fixed surface of baffle 2, and outside furnace body 1 was worn out respectively at the both ends of heating pipe 3, and in addition, it should explain that, heating pipe 3 is located between baffle 2 and the biphenyl import 12, through every biphenyl import 12 after adding the biphenyl in each cavity, lets in the conduction oil to heating pipe 3, and the conduction oil is at the 3 inner loop flow of heating pipe, heats the biphenyl in each cavity.

Air duct 4 passes each baffle 2 in proper order and with baffle 2 fixed connection, the one end of air duct 4 and the top fixed connection of furnace body 1 and with exhaust port 11 intercommunication, the bottom fixed connection of the other end and furnace body 1, the axis of air duct 4 and the axis coincidence of furnace body 1, along its axis direction seted up multiunit through-hole 41 on the lateral wall of air duct 4, every cavity corresponds a set of through-hole 41, and each set of through-hole 41 all sets up the position near baffle 2 lower surface.

When heating the spinning case, at first add liquid biphenyl to every cavity through biphenyl import 12 to the liquid level crosses heating pipe 3 for being suitable, then let in the conduction oil to heating pipe 3 inner loop, with the biphenyl heating to the gaseous state in every cavity, gaseous phase biphenyl collects through-hole 41 and gets into in the air duct 4, and rise along air duct 4 and discharge from gas vent 11, get into the spinning case, the biphenyl after giving out heat becomes liquid and flows back to biphenyl import 12 through the pipeline again, in leading-in each cavity. Separate furnace body 1 for each independent cavity through baffle 2, the total length of heating pipe 3 in every cavity obtains effectively shortening, and the flow path of conduction oil also effectively shortens consequently, has effectively alleviateed because of the pipeline vibration problem that the conduction oil leads to in the pipeline reciprocating motion, has played effective guard action to heating pipe 3, and the total volume of conduction oil reduces in heating pipe 3 in addition, also makes things convenient for the stop heating back, with the conduction oil discharge in the pipeline.

In addition, the heating pipe 3 in each cavity is an independent heating unit, the adjacent cavities are independently heated, and heat exchange also exists between the adjacent cavities, so that the time for heating the liquid biphenyl in unit volume to the gas phase is shorter, and the heat transfer efficiency is improved.

Referring to fig. 2, the through holes 41 are waist-shaped holes axially arranged along the air duct 4, the number of each group of through holes 41 is multiple, and the plurality of through holes 41 are uniformly distributed along the circumferential direction of the tube wall of the air duct 4. The gas in the cavity surrounds the gas-guide tube 4 and can enter the gas-guide tube 4 through a plurality of through holes 41 at the same time, so that the discharge path of the gas is increased.

The top of every cavity still is fixed with kuppe 5, and kuppe 5 is umbelliform in this application embodiment, and the inward flange of kuppe 5 and the pipe wall fixed connection of air duct 4, the outer flange and the inner wall fixed connection of furnace body 1, and the inward flange of kuppe 5 is located the through-hole 41 top, and the outer flange is located biphenyl 12 tops of importing. After the biphenyl is heated to a gas phase, the gas moves upwards along the inner wall surface of the flow guide cover 5 and enters the gas guide pipe 4 through the through hole 41, and the flow guide cover 5 plays a role in guiding the movement of the gas flow in a directional manner, so that the gas is prevented from accumulating at the junction of the partition plate 2 and the side wall of the furnace body 1.

Referring to fig. 2 and 3, the heating pipe 3 is spirally wound in each chamber, and the central axis of the spiral body formed by the heating pipe 3 coincides with the axis of the gas guide pipe 4, so that the contact area between the heat conduction oil and the biphenyl can be increased, and the heat conduction efficiency is improved. And for the U-shaped coil pipe, the heating pipe 3 is set to be spiral, the pipeline steering joint is smoother, and the phenomenon of 'swirl' or 'air hammer' in the pipeline can be avoided to a certain extent.

Further, gaps are formed between the heating pipe 3 and the inner wall of the furnace body 1 and between the heating pipe walls of the air guide pipes 4, the heating pipe 3 is located in the center of each cavity, and the liquid biphenyl is wrapped outside the heating pipe 3, so that the heat emitted by the heating pipe 3 can be fully utilized, and the rate of heat diffusing around is increased.

Referring to fig. 2 and 3, the heating tube 3 is further provided with a plurality of reinforcing members 7, and the reinforcing members 7 are arranged in a circular array with respect to the central axis of the spiral body formed by winding the heating tube 3. Each group of reinforcing components 7 comprises a connecting plate 71, a fixing rod 72 and a nut 73, the connecting plate 71 is arranged in parallel to the gas guide tube 4, and the connecting plate 71 is attached to the tube wall of the heating tube 3; the fixing rods 72 are uniformly distributed along the length direction of the connecting plate 71, the fixing rods 72 are specifically U-shaped rod bodies, two ends of each fixing rod are clamped outside the pipe wall of the heating pipe 3 and are attached to the pipe wall of the heating pipe 3, a plurality of groups of holes distributed equidistantly are formed in the connecting plate 71, two ends of each fixing rod 72 penetrate through the connecting plate 71, threads are arranged at two ends of each fixing rod 72, nuts 73 are in threaded connection with the ends of the fixing rods 72 penetrating through the connecting plates 71, the side end faces of the nuts 73 are tightly abutted to the connecting plates 71, and the heating pipes 3 are clamped and fixed by the fixing rods 72 and the connecting plates 71.

It should be noted that the end of each connecting plate 71 is fixedly connected to the partition plate 2, so as to fix the entire heating pipe 3 to the partition plate 2. Through the setting of reinforcing component 7, not only can fix heating pipe 3 on baffle 2, can strengthen the rigidity of the spirochaeta that whole heating pipe 3 formed moreover, prevent to shake at the in-process heating pipe 3 that leads to thermal oil.

Referring to fig. 2, a jacket 6 is further fixedly arranged on the outer wall of the furnace body 1, and an interlayer is formed between the jacket 6 and the outer wall of the furnace body 1, so that a heat preservation effect can be achieved.

Furthermore, a plurality of jackets 6 are uniformly distributed along the axial direction of the furnace body 1, each jacket 6 is wrapped on the outer side of the corresponding cavity, openings are respectively formed in the upper end and the lower end of the side wall of each jacket 6, heat-conducting media can pass through the insides of the jackets 6 through the openings, heat preservation is achieved, and meanwhile biphenyl inside the furnace body 1 can be subjected to auxiliary heating; meanwhile, the jackets 6 are arranged in a layered mode, heat-conducting media can be respectively led into the jackets 6, the internal space of each jacket 6 is reduced, and heat loss of the heat-conducting media along the movement process can be effectively reduced.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the 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 vertical biphenyl furnace, comprising:

the furnace comprises a furnace body (1), wherein the top of the furnace body is provided with an exhaust port (11), and the side wall of the furnace body (1) is provided with a plurality of biphenyl inlets (12) at intervals along the axial direction;

the furnace body comprises a furnace body (1), baffle plates (2) and a plurality of baffle plates (2), wherein the baffle plates (2) are arranged in the furnace body (1) and fixedly connected with the inner wall of the furnace body (1), the baffle plates (2) are distributed at intervals along the axis direction of the furnace body (1), an independent cavity is formed between every two adjacent baffle plates (2), one biphenyl inlet (12) is arranged corresponding to each cavity, and the biphenyl inlets (12) are positioned at the upper parts of the cavities;

the heating pipes (3) are respectively arranged in each cavity and positioned between the partition plate (2) and the biphenyl inlet (12), and two ends of each heating pipe (3) respectively penetrate out of the furnace body (1); and

the air guide pipes (4) are fixedly connected with the partition plates (2), the axes of the air guide pipes coincide with the axis of the furnace body (1), the air guide pipes sequentially penetrate through the partition plates (2), and the upper ends of the air guide pipes (4) are connected with the exhaust ports (11);

the heating pipe is characterized in that a plurality of groups of through holes (41) are formed in the pipe wall of the air guide pipe (4) at intervals along the axis, each group of through holes (41) are arranged close to the lower surface of the partition plate (2), and after hot oil is introduced into the heating pipe (3), steam can enter the air guide pipe (4) through the through holes (41) and is discharged from the air exhaust port (11).

2. The vertical biphenyl furnace of claim 1, wherein: each group of through holes (41) comprises a plurality of through holes which are uniformly arranged along the circumferential direction of the air guide pipe (4).

3. The vertical biphenyl furnace of claim 1, wherein: the top of each chamber is provided with a flow guide cover (5);

the inner edge of the air guide sleeve (5) is fixedly connected with the pipe wall of the air guide pipe (4), the outer edge of the air guide sleeve is fixedly connected with the inner wall of the furnace body (1), the inner edge of the air guide sleeve (5) is higher than the outer edge of the air guide sleeve, the inner edge of the air guide sleeve (5) is located above the through hole (41), and the outer edge of the air guide sleeve is located above the biphenyl inlet (12).

4. The vertical biphenyl furnace of claim 1, wherein: the furnace body (1) is fixedly provided with a jacket (6), and an interlayer is formed between the jacket (6) and the outer wall of the furnace body (1).

5. The vertical biphenyl furnace of claim 4, wherein: the furnace is characterized in that the plurality of clamping sleeves (6) are arranged along the axial direction of the furnace body (1), the clamping sleeves (6) correspond to the chambers respectively, and openings are formed in the upper end and the lower end of the side wall of each clamping sleeve (6).

6. The vertical biphenyl furnace of claim 1, wherein: the heating pipe (3) is spirally arranged.

7. The vertical biphenyl furnace of claim 6, wherein: gaps are formed among the heating pipe (3), the inner wall of the furnace body (1) and the air duct (4).

8. The vertical biphenyl furnace of claim 6 or 7, wherein: still be equipped with on heating pipe (3) and consolidate subassembly (7), it is provided with the multiunit to consolidate subassembly (7) interval on heating pipe (3), and every group consolidates subassembly (7) and all includes:

the connecting plate (71) is attached to the pipe wall of the heating pipe (3), and one end of the connecting plate is fixedly connected with the partition plate (2) and is parallel to the air guide pipe (4);

the fixing rod (72) is wrapped outside the heating pipe (3), two ends of the fixing rod respectively penetrate through the connecting plate (71), and threads are arranged at two ends of the fixing rod (72); and

and nuts (73) which are respectively in threaded connection with two end parts of the fixing rod (72), wherein the side end surfaces of the nuts (73) are abutted against the connecting plate (71).