CN219347444U

CN219347444U - Heat exchanger and calciner flue gas waste heat recycling device

Info

Publication number: CN219347444U
Application number: CN202320275067.0U
Authority: CN
Inventors: 都二宏; 都广林; 张小霞; 尚欢欢
Original assignee: Jiaozuo Honglin New Material Co ltd
Current assignee: Jiaozuo Honglin New Material Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-14
Anticipated expiration: 2033-02-21

Abstract

The utility model relates to the technical field of carbon production and discloses a heat exchanger, which comprises a shell and a seal head, wherein a heat exchange tube is arranged in the shell, a first connecting component and a second connecting component are respectively arranged at two ends of the shell, the first connecting component comprises a first tube plate and a second tube plate, the second connecting component comprises a third tube plate and a fourth tube plate, connecting holes are formed in the first tube plate, the second tube plate, the third tube plate and the fourth tube plate, an outer protruding block and a limiting groove are formed in the heat exchange tube, a connecting ring is arranged on the first tube plate, an inner protruding block is arranged on the connecting ring, an annular groove is formed in the second tube plate, a limiting ring is arranged on the third tube plate, a limiting block is arranged on the limiting ring, a limiting tooth is arranged on the fourth tube plate, a limiting tooth is arranged on the second annular groove, and an annular inner blocking edge is arranged on the seal head. The heat exchange tube is detachably connected, so that the heat exchange tube is convenient to regularly detach for cleaning, the heat exchange effect is ensured, the waste heat recovery utilization rate is improved, and the energy is saved.

Description

Heat exchanger and calciner flue gas waste heat recycling device

Technical Field

The utility model relates to the technical field of carbon production, in particular to a heat exchanger and a flue gas waste heat recycling device of a calciner.

Background

Calcination is an important step in the process of processing carbon products, the calcination process can lead the coke to generate complex physical and chemical changes, discharge volatile matters and moisture, improve density, conductivity and the like, change the performance of raw materials, and the calciner can discharge a large amount of high-temperature flue gas during calcination, so that waste heat recovery is needed by using equipment such as a heat exchanger and the like.

The shell and tube heat exchanger is a commonly used heat exchange device, tube side fluid and shell side fluid exchange heat through the shell and tube, but most of the existing shell and tube heat exchangers are fixed on a shell, the tube wall can be scaled after the device runs for a long time, cleaning is inconvenient, and the heat exchange effect is affected.

Disclosure of Invention

Aiming at the technical problems existing in the prior art, the utility model provides a heat exchanger and a flue gas waste heat recycling device of a calciner.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a heat exchanger, includes the casing and can dismantle the head of connecting in the casing both sides, be equipped with a plurality of heat exchange tube in the casing, the both ends of casing are equipped with coupling assembling first and coupling assembling second that are used for connecting the heat exchange tube respectively, coupling assembling first includes tube sheet three and tube sheet four, be equipped with the connecting hole that is used for the heat exchange tube to run through on tube sheet one, tube sheet two, tube sheet three and the tube sheet four respectively, tube sheet one and tube sheet three are fixed in on the casing, evenly be equipped with a plurality of outer lugs on the outer disc of heat exchange tube one end, offer along its axially extending spacing groove on the outer disc of another end, the coaxial go-between that is equipped with of connecting hole department of tube sheet one, evenly be equipped with a plurality of interior lugs on the inner disc of go-between, correspond the go-between and be equipped with ring channel one on the tube sheet two, be equipped with the spacing tooth one that is annular on the terminal surface of spacing ring is equipped with spacing tooth one on the spacing ring, be equipped with spacing tooth one on the spacing tooth that is arranged along annular tooth on the annular on the inner wall of spacing ring.

Preferably, the sealing head and the shell are correspondingly provided with connecting flanges, and the connecting flanges are provided with fixing holes. The seal head and the shell are detachably connected through the fixing bolts in the fixing holes.

Preferably, the shell is provided with a shell side inlet and a shell side outlet, and the two sealing heads are respectively provided with a tube side inlet and a tube side outlet. The inner space formed by the two seal heads and the shell is divided into a heat exchange fluid liquid inlet chamber, a heat exchange chamber and a heat exchange fluid liquid outlet chamber, high-temperature flue gas of the calciner enters the shell through a shell side inlet, heat exchange fluid enters one seal head through a tube side inlet, enters the other seal head through each heat exchange tube, and finally is discharged through a tube side outlet, and heat exchange is carried out between the high-temperature flue gas and the heat exchange fluid in the shell, so that waste heat recovery is realized.

Preferably, an inner step is arranged in the connecting hole of the tube plate II and the connecting hole of the tube plate IV respectively, and a sealing gasket is arranged at the inner step.

When the heat exchange tube is installed, the end part provided with the limit groove sequentially passes through the first tube plate and the third tube plate, the direction of the heat exchange tube is adjusted when the heat exchange tube passes through the notch between the adjacent inner protruding blocks until the outer protruding blocks are clamped in the accommodating cavity between the inner protruding blocks and the first tube plate, at the moment, the limit block is just inserted into the limit groove, and then the heat exchange tube is rotated to enable the outer protruding blocks to correspond to the inner protruding blocks (in the process of rotating the heat exchange tube, the limit ring rotates along with the heat exchange tube); then installing a tube plate II, enabling the end part of the heat exchange tube to be inserted into the connecting hole of the tube plate II and propped against the inner step, and then installing the seal head on the shell; and installing the tube plate IV, so that the end part of the heat exchange tube is inserted into the connecting hole of the tube plate IV and is propped against the inner step, at the moment, the first limit tooth is meshed with the second limit tooth, and finally, the sealing head is installed on the shell, so that the heat exchange tube can be installed.

After the heat exchange tube is installed, the annular inner baffle edge on the seal head can compress and fix the tube plate II (or the tube plate IV); the connecting ring is positioned in the annular groove I on the tube plate II, and the inner convex block on the connecting ring and the outer convex block on the heat exchange tube of the tube plate I axially limit; the limiting ring is positioned on the annular groove II of the tube plate IV, the limiting teeth and the limiting blocks on the limiting ring are meshed to limit the heat exchange tube circumferentially, the heat exchange tube is prevented from rotating, and all the components are matched to fix the heat exchange tube.

In addition, the arrangement of the inner steps on the tube plate II and the tube plate IV can further limit and fix the heat exchange tube axially, and can realize the sealing of the heat exchange tube and the tube plate through the sealing gasket, thereby ensuring the normal operation of heat exchange.

The heat exchange tube can be detachably connected in the shell through the first connecting component and the second connecting component, and can be removed for thorough cleaning after scaling occurs on the tube wall of the heat exchange tube, so that the heat exchange effect is ensured, the waste heat recovery utilization rate is improved, and the energy is saved.

Preferably, positioning slots are respectively arranged on the first tube plate and the third tube plate, and positioning pins are respectively arranged on the second tube plate and the fourth tube plate corresponding to the positioning slots.

The positioning slots and the positioning pins are arranged, so that the installation of the first tube plate and the third tube plate is facilitated, the rotation of the first tube plate and the third tube plate can be prevented, and the first tube plate and the third tube plate can be circumferentially limited.

The flue gas waste heat recycling device of the calciner comprises the heat exchanger.

The utility model also comprises other components which can enable the heat exchanger and the flue gas waste heat recycling device of the calciner to be normally used, and the heat exchanger and the flue gas waste heat recycling device are all conventional technical means in the field. In addition, the devices or components not defined in the present utility model are all conventional in the art.

The heat exchange tube is detachably connected, so that the heat exchange tube is convenient to regularly detach and clean, the heat exchange effect is guaranteed, the waste heat recovery utilization rate is improved, and the energy is saved.

Drawings

Fig. 1 is a schematic structural view of the present embodiment.

Fig. 2 is an enlarged schematic view at a in fig. 1.

Fig. 3 is an enlarged schematic view at B in fig. 1.

Fig. 4 is an enlarged schematic view at C in fig. 1.

Fig. 5 is a side view of the heat exchange tube of fig. 1.

Fig. 6 is a side view of the tubesheet one of fig. 1.

Fig. 7 is an enlarged schematic view at D in fig. 6.

Fig. 8 is a schematic view of the structure of the second tube sheet in fig. 1.

Fig. 9 is a schematic view of the structure of the fourth tube sheet in fig. 1.

In the figure: 1. a housing; 2. a seal head; 3. a heat exchange tube; 4. a tube plate I; 5. a tube plate II; 6. a tube plate III; 7. a tube plate IV; 8. an outer bump; 9. a limit groove; 10. a connecting ring; 11. an inner bump; 12. an annular groove I; 13. a limiting ring; 14. a limiting block; 15. annular groove II; 16. limiting teeth II; 17. an annular inner baffle edge; 18. a connecting flange; 19. an inner step; 20. a sealing gasket; 21. and (5) positioning pins.

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 will be understood in specific cases by those of ordinary skill in the art.

Examples

Referring to fig. 1-9, a heat exchanger comprises a shell 1 and a seal head 2 detachably connected to two sides of the shell 1, a plurality of heat exchange tubes 3 are arranged in the shell 1, a first connecting component and a second connecting component which are used for connecting the heat exchange tubes 3 are respectively arranged at two ends of the shell 1, the first connecting component comprises a first tube plate 4 and a second tube plate 5, the second connecting component comprises a third tube plate 6 and a fourth tube plate 7, connecting holes used for penetrating the heat exchange tubes 3 are respectively arranged on the first tube plate 4, the second tube plate 5, the third tube plate 6 and the fourth tube plate 7, the first tube plate 4 and the third tube plate 6 are fixed on the shell 1, a plurality of outer protruding blocks 8 are uniformly arranged on the outer circular surface of one end part of the heat exchange tubes, a limiting groove 9 extending along the axial direction of the outer circular surface of the other end part is formed on the outer circular surface of the other end part of the heat exchange tubes, a connecting ring 10 is coaxially arranged at the connecting hole of the first tube plate 4, a plurality of inner protruding blocks 11 are uniformly arranged on the inner circular surface of the connecting ring 10, an annular groove 12 is formed in the second tube plate 5, a limiting ring 13 is coaxially arranged at the connecting hole of the third tube plate 6, a limiting ring 13 is coaxially arranged on the connecting hole of the connecting ring 13, the limiting ring 13 is correspondingly arranged on the connecting ring 13, and is correspondingly provided with an annular groove 15, and is correspondingly arranged on the second end surface of the limiting ring 13 and is meshed with the limiting ring groove 15.

In the embodiment, the connecting holes on the first tube plate 4, the second tube plate 5, the third tube plate 6 and the fourth tube plate 7 are uniformly and correspondingly arranged; the tube plate II 5 is positioned at the outer side of the tube plate I4, and the tube plate IV 7 is positioned at the outer side of the tube plate III 6; the connecting ring 10 is fixed on the first tube plate 4, the inner protruding block 11 is arranged at the end part of the connecting ring 10, an annular accommodating cavity for accommodating the outer protruding block 8 is formed among the inner protruding block 11, the connecting ring 10 and the first tube plate 4, and a notch for facilitating the outer protruding block 8 to pass through is formed among the adjacent inner protruding blocks 11.

The sealing head 2 and the shell 1 are correspondingly provided with a connecting flange 18, and the connecting flange 18 is provided with a fixing hole. The seal head 2 and the shell 1 are detachably connected through fixing bolts in the fixing holes.

The shell 1 is provided with a shell side inlet and a shell side outlet, and the two seal heads 2 are respectively provided with a tube side inlet and a tube side outlet. The inner space formed by the two seal heads 2 and the shell 1 is divided into a heat exchange fluid liquid inlet chamber, a heat exchange chamber and a heat exchange fluid liquid outlet chamber, high-temperature flue gas of the calciner enters the shell 1 through a shell side inlet, heat exchange fluid enters one seal head 2 through a tube side inlet, enters the other seal head 2 through each heat exchange tube 3 and finally is discharged through a tube side outlet, and heat exchange is carried out between the high-temperature flue gas and the heat exchange fluid in the shell 1, so that waste heat recovery is realized.

An inner step 19 is respectively arranged in the connecting hole of the tube plate II 5 and the connecting hole of the tube plate IV 7, and a sealing gasket 20 is arranged at the inner step 19.

When the heat exchange tube 3 is installed, the end part provided with the limit groove 9 sequentially passes through the first tube plate 4 and the third tube plate 6, the direction of the heat exchange tube 3 is adjusted when the heat exchange tube passes through, the outer convex block 8 passes through the notch between the adjacent inner convex blocks 11 until the outer convex block 8 is clamped in the accommodating cavity between the inner convex block 11 and the first tube plate 4, at the moment, the limit block 14 is just inserted into the limit groove 9, and then the heat exchange tube 3 is rotated, so that the outer convex block 8 corresponds to the inner convex block 11 (in the process of rotating the heat exchange tube 3, the limit ring 13 rotates along with the heat exchange tube 3); then installing the tube plate II 5, enabling the end part of the heat exchange tube 3 to be inserted into the connecting hole of the tube plate II 5 and propped against the inner step 19, and then installing the seal head 2 on the shell 1; and installing the tube plate IV, inserting the end part of the heat exchange tube 3 into the connecting hole of the tube plate IV and propping against the inner step 19, at the moment, engaging the first limit tooth with the second limit tooth, and finally installing the seal head 2 on the shell 1, thereby realizing the installation of the heat exchange tube 3.

After the heat exchange tube 3 is installed, the annular inner baffle edge 17 on the seal head 2 can compress and fix the tube plate II 5 (or the tube plate IV 7); the connecting ring is positioned in the annular groove I on the tube plate II, and the inner convex block on the connecting ring 10 and the tube plate I4 axially limit the outer convex block on the heat exchange tube 3; the limiting ring is positioned on the annular groove II of the tube plate IV, the limiting teeth and the limiting blocks 14 on the limiting ring 13 are meshed to limit the circumference of the heat exchange tube 3, the heat exchange tube 3 is prevented from rotating, and all the components are matched to fix the heat exchange tube 3.

In addition, the arrangement of the inner steps 19 on the tube plate II 5 and the tube plate IV 7 can further limit and fix the heat exchange tube 3 axially, and can realize the sealing between the heat exchange tube 3 and the tube plate through the sealing gasket 20, so that the normal heat exchange is ensured.

The heat exchange tube 3 can be detachably connected in the shell 1 through the first connecting component and the second connecting component, and can be removed for thorough cleaning after scaling occurs on the tube wall of the heat exchange tube 3, so that the heat exchange effect is ensured, the waste heat recovery utilization rate is improved, and the energy is saved.

Positioning slots are respectively formed in the first tube plate 4 and the third tube plate 6, and positioning pins 21 are respectively arranged on the second tube plate 5 and the fourth tube plate 7 corresponding to the positioning slots.

The positioning slots and the positioning pins 21 are arranged, so that the installation of the first tube plate 4 and the third tube plate 6 is facilitated, the rotation of the first tube plate and the third tube plate can be prevented, and the first tube plate and the third tube plate can be circumferentially limited.

The embodiments of the present utility model have been described above, the description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. The utility model provides a heat exchanger, includes casing and can dismantle the head of connection in the casing both sides, its characterized in that: the heat exchange tube comprises a shell, and is characterized in that a plurality of heat exchange tubes are arranged in the shell, a first connecting component and a second connecting component which are used for connecting the heat exchange tubes are respectively arranged at two ends of the shell, the first connecting component comprises a first tube plate and a second tube plate, the second connecting component comprises a third tube plate and a fourth tube plate, connecting holes which are used for the heat exchange tubes to penetrate through are respectively formed in the first tube plate, the second tube plate, the third tube plate and the fourth tube plate, the first tube plate and the third tube plate are fixed on the shell, a plurality of outer protruding blocks are uniformly arranged on the outer circular surface of one end part of the heat exchange tubes, limit grooves which axially extend along the outer circular surface of the other end part are formed in the outer circular surface of the other end part of the heat exchange tubes, connecting holes of the first tube plate are coaxially provided with connecting rings, the inner protruding blocks are uniformly arranged on the inner circular surface of the connecting rings, limit rings are coaxially arranged on the connecting holes of the second tube plate, limit teeth which are in annular arrangement are coaxially arranged on the connecting holes of the third tube plate and are rotatably provided with limit rings, and annular sealing heads are arranged on the inner edges of the limit rings.

2. A heat exchanger according to claim 1, wherein: the end socket and the shell are correspondingly provided with connecting flanges, and the connecting flanges are provided with fixing holes.

3. A heat exchanger according to claim 1, wherein: the shell is provided with a shell side inlet and a shell side outlet, and the two seal heads are respectively provided with a tube side inlet and a tube side outlet.

4. A heat exchanger according to claim 1, wherein: an inner step is arranged in the connecting hole of the tube plate II and the connecting hole of the tube plate IV respectively, and a sealing gasket is arranged at the inner step.

5. A heat exchanger according to claim 1, wherein: positioning slots are respectively formed in the first tube plate and the third tube plate, and positioning pins are respectively arranged on the second tube plate and the fourth tube plate corresponding to the positioning slots.

6. The utility model provides a calciner flue gas waste heat recovery utilizes device which characterized in that: comprising a heat exchanger according to any one of claims 1 to 5.