CN220893081U - Waste heat recovery device - Google Patents

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a waste heat recovery device, which comprises: the shell comprises an upper shell, a middle shell and a lower shell which are sequentially arranged from top to bottom, wherein the upper shell is communicated with a first inlet, and the lower shell is communicated with a first outlet; the two sides of the middle shell are respectively communicated with a second inlet and a second outlet; the heat conduction elements are arranged in the inner cavity of the middle shell along the vertical direction and comprise an outer heat pipe and an inner lining heat pipe; one end of the outer heat pipe is communicated with the inner cavity of the upper shell, and the other end of the outer heat pipe is communicated with the inner cavity of the lower shell; the inner lining heat pipe can be embedded into the outer heat pipe in a sliding way, and the top end of the inner lining heat pipe extends out of the outer heat pipe; the top end circumference side of the lining heat pipe is provided with a limiting part which is suitable for limiting the lining heat pipe to slide downwards in the outer heat pipe. The technical problems that an existing heat exchanger is difficult to clean, the maintenance cleaning efficiency is affected, and the maintenance cost is high are solved.

Description

Waste heat recovery device

Technical Field

The utility model relates to the technical field of heat exchange equipment, in particular to a waste heat recovery device.

Background

The waste heat refers to sensible heat and latent heat which are not reasonably utilized by the original design in the operated industrial enterprise energy consumption device due to the limitation of factors such as history, technology, concept and the like. The waste heat treatment device comprises high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like.

In the prior related art, the heat exchanger is usually adopted as the most waste heat recovery equipment, and the heat exchanger is used as a heat conversion recovery technology, and the working basic principle is as follows: the heat pipe is used as a heat transfer element, and the heat of a heating object is quickly transferred to the outside of a heat source through the heat pipe by utilizing the heat conduction principle of the heat pipe, and then the heat is converted with a cold medium.

In the existing heat exchanger, the heat exchange tube and the shell are generally included, heat medium circulates in the heat exchange tube and exchanges heat with cold medium circulating outside the heat exchange tube, and the heat medium circulates in the heat exchange tube for a long time, so that materials or dust are deposited and accumulated in the heat exchange tube easily to pollute the heat exchange tube, and the heat exchange tube is arranged in the heat exchanger and is difficult to clean, so that maintenance and cleaning efficiency is affected, and maintenance cost is high.

Disclosure of utility model

The utility model provides a waste heat recovery device, which solves the technical problems that the existing heat exchanger is difficult to clean, the maintenance cleaning efficiency is affected and the maintenance cost is high.

In view of this, the present utility model provides a waste heat recovery apparatus comprising:

The shell comprises an upper shell, a middle shell and a lower shell which are sequentially arranged from top to bottom, wherein the upper shell is communicated with a first inlet, and the lower shell is communicated with a first outlet; the two sides of the middle shell are respectively communicated with a second inlet and a second outlet;

The heat conduction elements are arranged in the inner cavity of the middle shell along the vertical direction and comprise an outer heat pipe and an inner lining heat pipe; one end of the outer heat pipe is communicated with the inner cavity of the upper shell, and the other end of the outer heat pipe is communicated with the inner cavity of the lower shell; the inner lining heat pipe can be slidably embedded into the outer heat pipe, and the top end of the inner lining heat pipe extends out of the outer heat pipe.

Optionally, a limiting part is arranged on the top end circumference side of the lining heat pipe and is suitable for limiting the lining heat pipe to slide downwards in the outer heat pipe.

Optionally, the limiting portion is a limiting ring.

Optionally, the length of the inner heat pipe is greater than the length of the outer heat pipe;

and/or the inner side wall of the outer heat pipe is in sealing fit with the outer side wall of the inner lining heat pipe.

Optionally, the lower housing is provided with at least one access opening, to which a sealing member is connected.

Optionally, the sealing member is a fast-assembling blind plate, the access hole is connected with the fast-assembling blind plate through the clamp.

Optionally, the upper shell is detachably connected with the middle shell, and the lower shell is detachably connected with the middle shell.

Optionally, the upper shell and the lower shell are connected with the middle shell through a plurality of groups of hanging ring flange assemblies.

Optionally, the lifting ring flange assembly comprises a lifting ring bolt and a lifting ring nut; one end of the eye bolt is hinged with the side wall of the middle shell, and the other end of the eye bolt is in threaded connection with the eye nut; and a ring type flange opening is formed on the peripheral sides of the upper shell and the lower shell corresponding to the eye bolts.

Optionally, the first inlet is provided with a first flange joint;

And/or the first outlet is provided with a second flange joint;

And/or the second inlet is provided with a third flange joint;

and/or the second outlet is provided with a fourth flange joint.

And/or the lining heat pipe is made of stainless steel.

The technical scheme of the utility model has the following advantages:

In the utility model, in the use process, the external conveying pipeline can be connected through the first inlet and the heat medium is input, the heat medium enters the inner cavity of the upper shell through the first inlet, then enters the inner cavity of the lower shell along the heat conduction element, then is output to the external conveying pipeline from the first outlet on the lower shell, meanwhile, the second inlet is connected with the external conveying pipeline and the cold medium is input, the cold medium enters the inner cavity of the middle shell from the second inlet, and is output to the external conveying pipeline from the second outlet after heat exchange with the heat medium passing through the heat conduction element is completed, thereby completing the heat exchange process of the cold medium and the heat medium.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a waste heat recovery device provided by the utility model;

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

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a top view of a heat transfer element provided by the present utility model;

FIG. 5 is a cross-sectional view of C-C of FIG. 1;

FIG. 6 is a side view of a part of the waste heat recovery device according to the present utility model in a disassembled state of the housing;

FIG. 7 is a side view of the overall structure of a waste heat recovery device provided by the utility model;

FIG. 8 is an enlarged view of FIG. 7 at D;

fig. 9 is a left side view of a waste heat recovery device provided by the utility model;

fig. 10 is a top view of a waste heat recovery device provided by the utility model.

Reference numerals illustrate:

1. an upper housing; 2. a middle shell; 3. a lower housing; 4. a first inlet; 5. a first outlet; 6. a second inlet; 7. a second outlet; 8. an outer heat pipe; 9. lining a heat pipe; 10. a limit part; 11. an access opening; 12. a clamp; 13. an eye bolt; 14. a ring nut; 15. and a hanging ring type flange opening.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

Referring to fig. 1 to 10, an apparatus for recovering waste heat provided in this embodiment includes: the shell comprises an upper shell 1, a middle shell 2 and a lower shell 3 which are sequentially arranged from top to bottom, wherein the upper shell 1 is communicated with a first inlet 4, and the lower shell 3 is communicated with a first outlet 5; the two sides of the middle shell 2 are respectively communicated with a second inlet 6 and a second outlet 7; the heat conduction elements are arranged in the inner cavity of the middle shell 2 along the vertical direction and comprise an outer heat pipe 8 and an inner lining heat pipe 9; one end of the outer heat pipe 8 is communicated with the inner cavity of the upper shell 1, and the other end is communicated with the inner cavity of the lower shell 3; wherein, inside lining heat pipe 9 slidable embeds in outer heat pipe 8, and the top of inside lining heat pipe 9 stretches out outer heat pipe 8.

It should be noted that, the middle housing 2 is hollow along the vertical direction, and the bottom of the upper housing 1, the middle housing 2 and the top of the lower housing 3 enclose an inner cavity of the middle housing 2; the hot medium and the cold medium may be selected as a gaseous or liquid medium.

In this embodiment, in the use process, the external conveying pipeline can be connected through the first inlet 4 and the heat medium is input, the heat medium enters the inner cavity of the upper shell 1 through the first inlet 4, then enters the inner cavity of the lower shell 3 along the heat conduction element, then is output to the external conveying pipeline from the first outlet 5 on the lower shell 3, meanwhile, the second inlet 6 is connected with the external conveying pipeline and inputs the cold medium, the cold medium enters the inner cavity of the middle shell 2 from the second inlet 6, and is output to the external conveying pipeline from the second outlet 7 after heat exchange with the heat medium passing through the heat conduction element is completed, thereby completing the heat exchange process of the cold medium and the heat medium.

Example 2

As a further improvement to embodiment 1, as shown in fig. 4 and 5, the top end peripheral side of the inner heat pipe 9 is provided with a stopper 10 adapted to restrict the inner heat pipe 9 from sliding downward in the outer heat pipe 8.

In this embodiment, the limiting portion 10 limits the top end of the inner lining heat pipe 9 when the inner lining heat pipe 9 is inserted into the outer heat pipe 8, so as to prevent the inner lining heat pipe 9 from sliding down to the bottom along the inner portion of the outer heat pipe 8, and thus the inner lining heat pipe 9 is convenient to detach and install.

In addition to the above embodiments, in a preferred embodiment, the stopper 10 is a stopper ring as shown in fig. 4 and 5.

It should be noted that, two ends of the outer heat pipe 8 extend into the preset lengths of the inner cavities of the upper shell 1 and the lower shell 3 respectively; the limiting ring is a circular ring-shaped entity which is continuous along the circumferential direction of the lining heat pipe 9.

In this embodiment, through the spacing portion 10 for being the spacing ring that the annular set up, encircle the setting through spacing ring along the periphery of lining heat pipe 9, can follow the top contact of week side and outer heat pipe 8 and carry out spacingly, prevent that lining heat pipe 9 from following the inner chamber of outer heat pipe 8 and gliding to the bottom, simultaneously, annular spacing ring along circumference and the top week side contact of outer heat pipe 8, have certain sealed effect, further improved the leakproofness between outer heat pipe 8 and the lining heat pipe 9, prevent that the heat medium from getting into between outer heat pipe 8 and the lining heat pipe 9, lead to material or powder precipitation in the heat medium to pollute outer heat pipe 8, and then be difficult to wash or maintain, influence life.

Specifically, the stop collar is integrally formed with the lined heat pipe 9. Further improving the supporting strength and the sealing performance. As an alternative embodiment, the limiting portion 10 may include at least one limiting block, and the limiting blocks may be uniformly arranged along the top end circumference of the heat pipe lining 9. The quantity of stopper can be 1, 2, 3 or a plurality of, prescribes a limit to according to actual conditions, carries out the limit through the stopper with the top butt of outer heat pipe 8 when inserting outer heat pipe 8 with inside lining heat pipe 9, avoids inside lining heat pipe 9 to slide to the bottom along the inside of outer heat pipe 8, convenient to detach and installation.

On the basis of the above embodiment, in a preferred embodiment, as shown in fig. 2, 4 and 5, the length of the inner heat pipe 9 is longer than the length of the outer heat pipe 8.

In this embodiment, the length of the inner lining heat pipe 9 is longer than that of the outer heat pipe 8, so that the heat medium is ensured not to contact with the inner side wall of the outer heat pipe 8 when passing through the inner lining heat pipe 9, and thus the outer heat pipe 8 is polluted, and cleaning and maintenance of the heat conduction element are affected.

In addition to the above embodiment, in a preferred embodiment, as shown in fig. 5, the inner side wall of the outer heat pipe 8 is sealed and bonded to the outer side wall of the inner heat pipe 9.

In this embodiment, the inner side wall of the outer heat pipe 8 is sealed and bonded with the outer side wall of the inner lining heat pipe 9, so as to ensure the tightness between the inner side wall of the outer heat pipe 8 and the outer side wall of the inner lining heat pipe 9, so as to avoid the material or powder precipitation in the heat medium from polluting the outer heat pipe 8, and meanwhile, the close bonding of the inner side wall and the outer side wall can ensure the heat of the heat medium to pass through better, and ensure the heat exchange efficiency between the cold medium and the heat medium.

In addition to the above embodiments, in a preferred embodiment, as shown in fig. 1, 6, 7 and 9, the lower housing 3 is provided with at least one access opening 11, and the access opening 11 is connected with a sealing member.

The sealing member is detachably connected with the access opening 11, so that the disassembly and the assembly are convenient.

In this implementation, seal access port 11 through the sealing member when not overhauling, when needing to overhaul, accessible access port 11 overhauls, observes the leakproofness and inside between inside lining heat pipe 9 and the outer heat pipe 8 after opening the sealing member to in time wash or change and maintain, guarantee the heat transfer effect.

In a preferred embodiment, based on the above embodiment, the sealing member is a quick-fit blind plate, as shown in fig. 9, and the access opening 11 is connected to the quick-fit blind plate through a clip 12.

In this embodiment, the fast-assembling blind plate is fixed at the access hole 11 through the clamp 12 and sealed, and the fixed form of the clamp 12 can be convenient for dismantle and install, and is very simple and convenient.

As an alternative embodiment, the sealing element may be a sealing cover, and the opening end of the sealing cover is screwed with the access hole. Through sealed lid and access hole threaded connection, conveniently dismantle and install, seal the access hole simultaneously. Specifically, the inside wall of the opening end of the sealing cover is provided with an internal thread, the outside wall of the access hole is provided with an external thread matched with the internal thread, and the external thread is in threaded connection with the internal thread.

On the basis of the above-described embodiment, in a preferred embodiment, as shown in fig. 1, 6, 7 and 9, the upper case 1 is detachably connected to the middle case 2, and the lower case 3 is detachably connected to the middle case 2.

In this embodiment, through the form of detachable connection, easy to assemble and dismantlement are in order to maintain, reduce the fault rate of equipment.

On the basis of the above embodiment, in a preferred embodiment, as shown in fig. 1, 6, 7 and 9, the upper casing 1 and the lower casing 3 are connected to the middle casing 2 through a plurality of sets of ring flange assemblies.

In this embodiment, go up casing 1 and lower casing 3 and all be connected with well casing 2 through multiunit rings flange subassembly, all be equipped with multiunit rings flange subassembly in the upper end and the lower extreme of well casing 2 promptly, be convenient for dismantle and install to be convenient for maintain, reduce maintenance cost and fault rate.

On the basis of the above embodiments, in a preferred embodiment, as shown in fig. 8, the eye flange assembly includes an eye bolt 13 and an eye nut 14; one end of the eye bolt 13 is hinged with the side wall of the middle shell 2, and the other end is connected with an eye nut 14 in a threaded manner; the peripheral sides of the upper shell 1 and the lower shell 3 are respectively provided with a hanging ring type flange opening 15 corresponding to the hanging ring bolts 13.

It should be noted that, the width of the end of the eye nut 14 near the eye bolt 13 is larger than the width of the eye flange opening 15; the eye flange 15 is in clearance fit with the eye bolt 13.

In this embodiment, a plurality of ring-shaped flange openings 15 are respectively provided on the peripheral sides of the upper casing 1 and the lower casing 3, when the upper casing 1 and the middle casing 2 or the lower casing 3 and the middle casing 2 are required to be connected, the ring-shaped flange openings 15 are aligned with the ring bolts 13, the ring bolts 13 are rotated to be clamped in the ring-shaped flange openings, then the ring bolts 13 are screwed to be abutted against the side walls of the upper casing 1 or the lower casing 3, and the upper casing 1 or the lower casing 3 is fixedly connected with the middle casing 2 so as to realize connection installation.

On the basis of the above embodiments, in a preferred embodiment, the first inlet 4 is provided with a first flange joint, as shown in fig. 6 and 7.

In this embodiment, the first flange connector is disposed at the first inlet 4, so that the connection and the disassembly of the external conveying pipeline are facilitated through the first flange connector, and particularly, the external conveying pipeline is in bolt connection with the first flange connector.

On the basis of the above embodiments, in a preferred embodiment, the first outlet 5 is provided with a second flange joint, as shown in fig. 6 and 7.

In this embodiment, the second flange connector is disposed at the first outlet 5, so that the connection and the disassembly of the external conveying pipeline are facilitated through the second flange connector, and particularly, the external conveying pipeline is in bolt connection with the second flange connector.

On the basis of the above embodiments, in a preferred embodiment, the second inlet 6 is provided with a third flange joint, as shown in fig. 6 and 7.

In this embodiment, the third flange connector is disposed at the second inlet 6, so that the connection and the disassembly of the external conveying pipeline are facilitated through the third flange connector, and particularly, the external conveying pipeline is in bolt connection with the third flange connector.

On the basis of the above embodiments, in a preferred embodiment, the second outlet 7 is provided with a fourth flanged joint, as shown in fig. 6 and 7.

In this embodiment, the fourth flange connector is disposed at the second outlet 7, so that the connection and the disassembly of the external conveying pipeline are facilitated through the fourth flange connector, and particularly, the external conveying pipeline is in bolt connection with the fourth flange connector.

In addition to the above embodiment, in a preferred embodiment, the material of the heat pipe lining 9 is stainless steel.

In this embodiment, by adopting stainless steel, the lining heat pipe 9 is prevented from being corroded, rusted and damaged during long-term operation, and the heat energy conduction efficiency of the lining heat pipe 9 is ensured. Specifically, the wall thickness of the lining heat pipe 9 is 3mm, and the problem that the wall sticking of the inner wall of the heat pipe cannot be cleaned is solved by adopting a thin-wall design without affecting the heat exchange efficiency.

The specific installation and the working principle of the waste heat recovery device provided by the embodiment are as follows: before use, the first inlet 4, the first outlet 5, the second inlet 6 and the second outlet 7 are connected with an external conveying pipeline through a first connecting flange, a second connecting flange, a third connecting flange and a fourth connecting flange respectively, in the use process, a heat medium enters the inner cavity of the upper shell 1 through the external conveying pipeline from the first inlet 4, then enters the inner cavity of the lower shell 3 along a heat conduction element, and then is output to the external conveying pipeline from the first outlet 5 on the lower shell 3, meanwhile, the second inlet 6 is connected with the external conveying pipeline and inputs a cold medium, the cold medium enters the inner cavity of the middle shell 2 from the second inlet 6, and is output to the external conveying pipeline from the second outlet 7 after heat exchange with the heat medium passing through the heat conduction element is completed, so that the heat exchange process of the cold medium and the heat medium is completed; since the heat medium can be deposited with materials or powder when passing through the heat conduction element, when the heat exchange is completed and the heat conduction element needs to be cleaned or maintained, the tightness between the lining heat pipe 9 and the outer heat pipe 8 and whether foreign matters exist inside can be checked through the overhaul port 11 to determine whether the maintenance is performed or not, since the lining heat pipe 9 can be slidably embedded into the outer heat pipe 8, an outer conveying pipeline connected to the first inlet 4 is opened after being detached from the first connecting flange, the lining heat pipe 9 is only required to be extracted from the outer heat pipe 8 through the first inlet 4, the cleaning is independently performed or the cleaning is completed, the lining heat pipe 9 is reinserted into the outer heat pipe 8 after the cleaning or the replacement is completed, and the limiting ring at the top end of the lining heat pipe 9 is used for limiting and is tightly matched with the outer heat pipe 8; in addition, the upper shell 1 is detachably connected with the middle shell 2, and the lower shell 3 is detachably connected with the middle shell 2 through a hanging ring flange assembly, so that the installation and the maintenance are further facilitated. The setting is connected in the detachable adoption between a plurality of parts of waste heat recovery device that this embodiment provided to make things convenient for the fast-assembling quick detach to and through the detachable setting of inside lining heat pipe 9 and outer heat pipe 8, under the prerequisite of guaranteeing waste heat conversion efficiency, improved maintenance efficiency simultaneously, reduction in equipment cost improves the life of equipment. The technical problems that an existing heat exchanger is difficult to clean, the maintenance cleaning efficiency is affected, and the maintenance cost is high are solved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A waste heat recovery device, comprising:

The shell comprises an upper shell (1), a middle shell (2) and a lower shell (3) which are sequentially arranged from top to bottom, wherein the upper shell (1) is communicated with a first inlet (4), and the lower shell (3) is communicated with a first outlet (5); two sides of the middle shell (2) are respectively communicated with a second inlet (6) and a second outlet (7);

The heat conduction elements are arranged in the inner cavity of the middle shell (2) along the vertical direction and comprise an outer heat pipe (8) and an inner lining heat pipe (9); one end of the outer heat pipe (8) is communicated with the inner cavity of the upper shell (1), and the other end of the outer heat pipe is communicated with the inner cavity of the lower shell (3); the inner lining heat pipe (9) can be slidably embedded into the outer heat pipe (8), and the top end of the inner lining heat pipe (9) extends out of the outer heat pipe (8).

2. Waste heat recovery device according to claim 1, characterized in that the top peripheral side of the inner lining heat pipe (9) is provided with a limiting part (10) adapted to limit the downward sliding of the inner lining heat pipe (9) in the outer heat pipe (8).

3. Waste heat recovery device according to claim 2, characterized in that the limit part (10) is a limit ring.

4. Waste heat recovery device according to claim 1, characterized in that the length of the inner lining heat pipe (9) is greater than the length of the outer heat pipe (8);

And/or the inner side wall of the outer heat pipe (8) is in sealing fit with the outer side wall of the inner lining heat pipe (9).

5. Waste heat recovery device according to claim 1, characterized in that the lower housing (3) is provided with at least one access opening (11), the access opening (11) being connected with a seal.

6. The waste heat recovery device according to claim 5, wherein the sealing member is a quick-fit blind plate, and the service opening (11) is connected with the quick-fit blind plate through a clamp (12).

7. Waste heat recovery device according to any one of claims 1-6, characterized in that the upper housing (1) is detachably connected to the middle housing (2), and the lower housing (3) is detachably connected to the middle housing (2).

8. Waste heat recovery device according to claim 7, characterized in that the upper housing (1) and the lower housing (3) are both connected to the middle housing (2) by means of sets of lifting ring flange assemblies.

9. Waste heat recovery device according to claim 8, wherein the eye flange assembly comprises an eye bolt (13) and an eye nut (14); one end of the eye bolt (13) is hinged with the side wall of the middle shell (2), and the other end of the eye bolt is in threaded connection with the eye nut (14); the periphery of the upper shell (1) and the periphery of the lower shell (3) are provided with hanging ring type flange openings (15) corresponding to the hanging ring bolts (13).

10. Waste heat recovery device according to claim 1, wherein the first inlet (4) is provided with a first flange joint;

and/or the first outlet (5) is provided with a second flange joint;

And/or the second inlet (6) is provided with a third flange joint;

And/or the second outlet (7) is provided with a fourth flange joint;

and/or the lining heat pipe (9) is made of stainless steel.