CN212620277U

CN212620277U - Graphite heat exchanger

Info

Publication number: CN212620277U
Application number: CN202020806132.4U
Authority: CN
Inventors: 殷朋飞
Original assignee: QINGDAO HANXIN GRAPHITE EQUIPMENT TECHNOLOGY CO LTD
Current assignee: QINGDAO HANXIN GRAPHITE EQUIPMENT TECHNOLOGY CO LTD
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-02-26
Anticipated expiration: 2030-05-14

Abstract

The utility model relates to a graphite heat exchanger, which comprises a shell, wherein the upper end and the lower end of the shell are both provided with shell tube plates, mounting holes are respectively arranged on the two tube plates, the surfaces of the two tube plates are lined with corrosion-resistant layers, the mounting holes of the two tube plates are correspondingly arranged, a plurality of carbon fiber reinforced graphite heat exchange tubes with two ends respectively inserted in the mounting holes are vertically arranged between the two tube plates, sealing rubber rings are fixedly connected in the mounting holes respectively, each sealing rubber ring comprises a main sleeve inserted in the mounting hole and an auxiliary sleeve fixedly connected on one side of the main sleeve, the outer diameter of the auxiliary sleeve is larger than that of the main sleeve, the length of the main sleeve is the same as that of the mounting holes, the auxiliary sleeve of the sealing rubber ring is positioned on one side of the tube plates which are close to each other and is abutted against one side of the corresponding tube plates which are close to each other, the sealing rubber ring is also provided with jacks penetrating through the sealing rubber ring along the axial direction, the effect of reducing the chance of leakage.

Description

Graphite heat exchanger

Technical Field

The utility model belongs to the technical field of the technique of heat exchanger and specifically relates to a graphite heat exchanger is related to.

Background

The graphite heat exchanger is a heat exchanger made of graphite for a heat transfer assembly. The graphite used for the production of the heat exchanger should have impermeability, and commonly used impermeable graphite of the impregnation type and impermeable graphite of the pressed type. The graphite heat exchanger can be divided into three types, namely block hole type, shell and tube type and plate type according to the structure. The graphite heat exchanger has good corrosion resistance, and the heat transfer surface is not easy to scale, so that the heat transfer performance is good. However, the graphite molding device is brittle and has low bending and tensile strength, so that the molding device can only be used for low pressure molding devices, even the block hole-shaped structure with the best pressure bearing capacity, and the working pressure of the molding device is generally only 0.3-0.5 MPa. The graphite heat exchanger is mainly used for heat exchange of corrosive media such as hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid, and the like, and is used as a condenser for acetic acid and acetic anhydride, and the like.

The existing referenceable authorization publication numbers are: CN205300321U, a chinese utility model patent discloses a graphite shell-and-tube acid heat exchanger, which comprises an outer steel jacket and an inner graphite barrel, wherein the inner graphite barrel is formed by sequentially connecting an upper floating head, a heat exchange tube and a lower floating head from top to bottom, a steel lining upper end socket and a steel lining upper cover plate are sequentially connected above the upper floating head, and a steel lining lower end socket is connected below the lower floating head; the steel lining glue lower end socket comprises a first steel lining glue lower end socket and a second steel lining glue lower end socket, the second steel lining glue lower end socket is of an inverted cone structure, and filters are symmetrically arranged in the second steel lining glue lower end socket; two communicated annular jackets are arranged in parallel on the barrel body close to the upper floating head, a steam inlet is arranged in the center of one side of each communicated annular jacket, and a jacket liquid outlet is arranged at the bottom of the other side of each communicated annular jacket. The utility model has the advantages that: the graphite tube-in-tube heat exchanger is provided with the filter, and when a medium enters the heat exchanger, impurities are filtered out, so that the impurities are prevented from entering the heat exchange tube; meanwhile, the jacket is additionally arranged outside the cylinder, so that heat exchange is further performed, and the heat exchange effect is improved.

The comparison document is a graphite heat exchanger, but at present, the joint of the tube plate and the graphite heat exchange tube of the heat exchanger is generally fixed by adopting a cement adhesive process, but the sealing performance is poor because the joint of the tube plate and the graphite heat exchange tube bears the external load superposition effect in the aspects of tube side internal pressure, shell layer internal pressure, floating part weight, shell layer medium weight, tube side medium weight, shell side-tube side pressure difference, pipeline vibration and the like, and leakage often occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a graphite heat exchanger, have the leakproofness that can improve graphite heat exchange tube and tube sheet, reduce the probability of leaking to the not enough of prior art existence.

The above object of the present invention is achieved by the following technical solutions:

a graphite heat exchanger comprises a shell, wherein tube plates of the shell are horizontally arranged at the upper end and the lower end in the shell, a plurality of mounting holes are respectively formed in the two tube plates, the mounting holes of the two tube plates are correspondingly arranged, a plurality of carbon fiber reinforced graphite heat exchange tubes with two ends respectively inserted into the mounting holes are vertically arranged between the two tube plates, the mounting holes are all fixedly connected with sealing rubber rings, each sealing rubber ring comprises a main sleeve inserted in the mounting hole and an auxiliary sleeve fixedly connected to one side of the main sleeve and having an outer diameter larger than that of the main sleeve, the main sleeve and the auxiliary sleeve are coaxially arranged, the length of the main sleeve is the same as that of the mounting hole, the auxiliary sleeves of the sealing rubber rings are positioned at one side of the tube plates close to each other and are abutted against one side of the corresponding tube plates close to each other, the sealing rubber ring is also provided with jacks penetrating through the sealing rubber ring along the axis direction, and the jacks are penetrated through by the end part of the installation pipe.

Through adopting above-mentioned technical scheme, during the use, the both ends of heat exchange tube are all inserted and are located the jack of sealing rubber ring, can effectually realize the sealed between heat transfer pipe fitting and the tube sheet through sealing washer rubber ring self elasticity, eliminate the deformation stress of pipe, guarantee sealed effect.

The present invention may be further configured in a preferred embodiment as: the tube plates are all made of steel plates, and corrosion-resistant layers are lined on the surfaces of the tube plates.

Through adopting above-mentioned technical scheme, the steel sheet through adopting replaces traditional graphite tube sheet as the tube sheet, can carry out the design of big specification, reduces the processing cost, and the preparation is convenient, and in addition, the tube sheet surface of adoption is lined with the corrosion resistant layer, can the effectual corrosion resistance who improves the crown plate, guarantees the use of tube sheet.

The present invention may be further configured in a preferred embodiment as: the casing is stainless steel casing, and the inside corrosion-resistant layer that has lined evenly of casing.

Through adopting above-mentioned technical scheme, through the stainless steel casing that adopts to inside lining has the corrosion resistant layer in the casing, the intensity of casing is high, and corrosion resistance is strong, long service life.

The present invention may be further configured in a preferred embodiment as: the shell is provided with a plurality of mounting holes, the mounting holes are arranged on the shell, the shell is provided with a plurality of support plates corresponding to the side, away from the tube plate, of the shell, the support plates are horizontally provided with support plates, the positions, corresponding to the mounting holes, of the support plates are provided with connecting holes, and the aperture of the connecting holes is the same as that of the carbon fiber reinforced.

Through adopting above-mentioned technical scheme, the layer board of adoption can accept the both ends of heat transfer pipe to further assurance pipe fitting is fixed in the casing.

The utility model discloses further set up to: the shell comprises a ring body and end covers connected to two ends of the ring body through flanges, and the tube plate and the supporting plate are arranged at two ends of the ring body.

The utility model discloses further set up to: the utility model discloses a pipe fitting, including the ring body, the pipe plate, the ring body, the toper mounting groove of ring body coaxial line is all seted up at the both ends of ring body, the global toper installation face that can with toper mounting groove butt that all sets up of tube sheet, the ring body inner peripheral surface corresponds the toper mounting groove and keeps away from one end each other and has all seted up the internal thread, the global external screw thread with interior thread fit that sets firmly of layer board.

Through adopting above-mentioned technical scheme, when needs dismantle tube sheet or carbon fiber reinforcement graphite heat exchange tube, directly rotate the layer board, dismantle the planker down through interior external screw thread fit, then, pass through the toper installation face with the tube sheet and the cooperation of toper mounting groove, it can to take out the tube sheet from the ring body both ends.

The utility model discloses further set up to: the locating slot has still all been seted up to global one side of tube sheet, the equal rigid coupling in the position that the ring body corresponds the locating slot has the location strip.

Through adopting above-mentioned technical scheme, the location strip that adopts and constant head tank are mutually supported and can be realized the location of tube sheet on the ring body, guarantee the accurate nature of ring plate installation.

The utility model discloses further set up to: the supporting plate is provided with a plurality of positioning screw holes at the corresponding positions of the supporting plate and the tube plate, and the positioning screw holes are internally threaded with positioning bolts.

Through adopting above-mentioned technical scheme, the positioning bolt who adopts mutually supports with the location screw, can further realize the fixed of layer board and tube sheet, and then also can prevent the not hard up rotation of layer board, guarantees the compactness of connecting.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when the heat exchange tube is used, the two ends of the heat exchange tube are inserted into the insertion holes of the sealing rubber rings, the sealing between the heat exchange tube and the tube plate can be effectively realized through the elasticity of the sealing rubber rings, the deformation stress of the tube is eliminated, and the sealing effect is ensured;

2. the steel plate is used as the tube plate to replace the traditional graphite tube plate, so that large-specification design can be performed, the processing cost is reduced, the manufacture is convenient, and in addition, the corrosion resistance of the annular plate can be effectively improved and the use of the tube plate is ensured due to the corrosion-resistant layer lined on the surface of the tube plate;

3. through the stainless steel casing that adopts to inside the lining of casing has the corrosion resistant layer, and the intensity of casing is high, and corrosion resistance is strong, long service life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic representation of the tube sheet construction of the present invention.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a housing; 11. a ring body; 111. a tapered mounting groove; 112. a positioning bar; 113. an internal thread; 12. an end cap; 2. a corrosion-resistant layer; 3. a tube sheet; 31. a conical mounting surface; 32. positioning a groove; 33. mounting holes; 4. a support plate; 41. an external thread; 42. connecting holes; 5. positioning the screw hole; 51. positioning the bolt; 6. a carbon fiber reinforced graphite heat exchange tube; 7. sealing the rubber ring; 71. a main sleeve; 72. auxiliary sleeves; 73. and (4) inserting the jack.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a graphite heat exchanger, including casing 1, casing 1 adopts stainless steel to make, and the 1 inner wall of casing evenly is lined with corrosion-resistant layer 2, and casing 1 includes cylindric ring body 11 and sets up in the end cover 12 at ring body 11 both ends, and flange joint is all adopted at the both ends of end cover 12 and ring body 11.

Referring to fig. 1 and 2, tube plates 3 are horizontally arranged at two ends of the ring body 11, an axis of each tube plate 3 is in the same straight line with an axis of the ring body 11, tapered mounting surfaces 31 are arranged on the peripheral surfaces of the tube plates 3, tapered mounting grooves 111 which are coaxially arranged with the ring body 11 are arranged at two ends of the ring body 11, and the two tube plates 3 are inserted into two ends of the ring body 11 through mutual matching of the tapered mounting grooves 111 and the tapered mounting surfaces 31. The installation constant head tank 32 has still all been seted up to the global of tube sheet 3, and the both ends of ring body 11 still equal rigid coupling have a location strip 112, insert and mutually support through constant head tank 32 and location strip 112 when establishing tube sheet 3, can guarantee that the location of tube sheet 3 is accurate.

The one end that the corresponding toper mounting groove 111 of ring body 11 inner wall was kept away from each other still all sets up internal thread 113, and the one side that the corresponding tube sheet 3 in ring body 11 both ends was kept away from each other still all is provided with layer board 4, the axis direction of layer board 4 is the same with the axis direction of tube sheet 3, the outer peripheral face rigid coupling of layer board 4 has external screw thread 41, can realize layer board 4 fixed at ring body 11 both ends through external screw thread 41 and internal thread 113 mutually supporting, and then realize tube sheet 3 location. The corresponding position department of layer board 4 and tube sheet 3 has still all seted up location screw 5, and the internal thread 113 of location screw 5 is connected with positioning bolt 51, and positioning bolt 51 and the location screw 5 of adoption mutually support, can further realize the fixed of layer board 4 and tube sheet 3, and then also can prevent the not hard up rotation of layer board 4, guarantee the compactness of connecting.

Referring to fig. 2 and 3, the tube plate 3 is made of steel plate, and the surface of the tube plate 3 is lined with a corrosion-resistant layer 2, wherein the corrosion resistance can be rubber layer, plastic layer or acid-base resistant coating such as polytetrafluoroethylene. The two tube plates 3 are respectively provided with a plurality of mounting holes 33, the axial direction of each mounting hole 33 is the same as the axial direction of the pore plate, the mounting holes 33 of the two tube plates 3 are correspondingly arranged, a plurality of carbon fiber reinforced graphite heat exchange tubes 6 are vertically arranged between the two tube plates 3, two ends of each heating tube are respectively inserted into the corresponding mounting holes 33 of the two tube plates 3, sealing rubber rings 7 are fixedly connected in the mounting holes 33, each sealing rubber ring 7 comprises a main sleeve 71 inserted in the mounting hole 33 and an auxiliary sleeve 72 fixedly connected to one side of the main sleeve 71, the outer diameter of the auxiliary sleeve 72 is larger than that of the main sleeve 71, the main sleeve 71 and the auxiliary sleeve 72 are coaxially arranged, the length of the main sleeve 71 is the same as that of the mounting holes 33, the auxiliary sleeve 72 is positioned at one side where the tube plates 3 are close to each other, one side of the auxiliary sleeve 72 close to the main sleeve 71 can be abutted against the corresponding tube plate 3, the sealing rubber ring 7 is also provided with jacks 73 penetrating through the sealing rubber, the end part of the installation pipe is penetrated through the jack 73, the position of the supporting plate 4 corresponding to each installation hole 33 is provided with a connection hole 42, and the aperture of each connection hole 42 is the same as that of the carbon fiber reinforced graphite heat exchange pipe 6. During the use, the both ends of heat exchange tube are all inserted and are located in the jack 73 of seal rubber ring 7, can effectually realize the sealed between heat transfer pipe fitting and the tube sheet 3 through seal rubber ring 7 self elasticity, eliminate the deformation stress of pipe, guarantee sealed effect, and the layer board 4 of adoption can accept the both ends of heat exchange tube to further assurance pipe fitting is fixed in casing 1.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A graphite heat exchanger is characterized in that: the heat exchanger comprises a shell (1), tube plates (3) are horizontally arranged at the upper end and the lower end of the interior of the shell (1), a plurality of mounting holes (33) are formed in each of the tube plates (3), the mounting holes (33) of the two tube plates (3) are correspondingly arranged, a plurality of carbon fiber reinforced graphite heat exchange tubes (6) with two ends respectively inserted into the mounting holes (33) are vertically arranged between the two tube plates (3), sealing rubber rings (7) are fixedly connected into the mounting holes (33), each sealing rubber ring (7) comprises a main sleeve (71) inserted into the mounting holes (33) and an auxiliary sleeve (72) fixedly connected to one side of the main sleeve (71) and with the outer diameter larger than the outer diameter of the main sleeve (71), the main sleeve (71) and the auxiliary sleeve (72) are coaxially arranged, the length of the main sleeve (71) is the same as that of the mounting holes (33), the auxiliary sleeves (72) of the sealing rubber rings (7) are located on one side where the tube plates (3) are close to each other and abut against one side of the corresponding tube plates (, the sealing rubber ring (7) is also provided with an insertion hole (73) penetrating through the sealing rubber ring (7) along the axis direction, and the end part of the carbon fiber reinforced graphite heat exchange tube (6) penetrates through the insertion hole (73).

2. A graphite heat exchanger as claimed in claim 1, wherein: the tube plates (3) are all made of steel plates, and the surfaces of the tube plates (3) are lined with corrosion-resistant layers (2).

3. A graphite heat exchanger as claimed in claim 1, wherein: the shell (1) is a stainless steel shell, and the shell (1) is uniformly lined with a corrosion-resistant layer (2).

4. A graphite heat exchanger as claimed in claim 1, wherein: the shell (1) is provided with a supporting plate (4) corresponding to one side, away from the tube plate (3), of the shell, connecting holes (42) are formed in the positions, corresponding to the mounting holes (33), of the supporting plate (4), and the aperture of each connecting hole (42) is the same as that of the carbon fiber reinforced graphite heat exchange tube (6).

5. A graphite heat exchanger as claimed in claim 1, wherein: the shell (1) comprises a ring body (11) and end covers (12) connected to two ends of the ring body (11) through flanges, and the tube plate (3) and the supporting plate (4) are arranged at two ends of the ring body (11).

6. A graphite heat exchanger as claimed in claim 5, characterized in that: toper mounting groove (111) with ring body (11) coaxial line are all seted up at the both ends of ring body (11), the global toper installation face (31) that can with toper mounting groove (111) butt that all offer of tube sheet (3), one end that corresponds toper mounting groove (111) in ring body (11) inner peripheral surface and keeps away from each other still all offers internal thread (113), the global of layer board (4) set firmly with internal thread (113) complex external screw thread (41).

7. A graphite heat exchanger as claimed in claim 6, wherein: constant head tank (32) have still all been seted up to global one side of tube sheet (3), the equal rigid coupling in position that corresponds constant head tank (32) of ring body (11) has location strip (112).

8. A graphite heat exchanger as claimed in claim 4, characterized in that: a plurality of positioning screw holes (5) are further formed in the corresponding positions of the supporting plate (4) and the tube plate (3), and positioning bolts (51) are connected with internal threads (113) of the positioning screw holes (5).