CN218916071U

CN218916071U - Sealing strip and heat exchanger with same

Info

Publication number: CN218916071U
Application number: CN202222858524.7U
Authority: CN
Inventors: 张雯; 丁红
Original assignee: Wuxi Lisman Chemical Equipment Co ltd
Current assignee: Wuxi Lisman Chemical Equipment Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-04-25
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a sealing strip and a heat exchanger with the sealing strip, wherein the sealing strip comprises an upper body and oblique sides, a groove is arranged in the middle of the upper end of the upper body, 2 oblique sides are arranged at the lower end of the upper body, the section of the sealing strip is in an inverted Y shape, the heat exchanger comprises a shell, a tube plate, side plates, a fixing plate and the sealing strip, the fixing plates are arranged on two sides of the inner wall of the shell, the fixing plates are connected with the sealing strip through bolts, the upper end of the sealing strip is matched with the fixing plate, and the lower end of the sealing strip is matched with a reinforcing plate. The sealing strip is arranged between the sealing strip and the side plate of the heat exchanger with the sealing strip and the shell, when gas enters the inside of the shell, the gas is separated from the sealing strip and can not flow to the air outlet, the heat exchange effect and the heat exchange efficiency are improved, in addition, the bevel edge of the sealing strip is in interference fit with the reinforcing plate, the gas can press the bevel edge, the bevel edge is tightly clung to the reinforcing plate, and the sealing property and the stability of the sealing strip are greatly improved.

Description

Sealing strip and heat exchanger with same

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a sealing strip and a heat exchanger with the sealing strip.

Background

The heat exchanger is energy-saving equipment for realizing heat transfer between two or more fluids with different temperatures, and is one of main equipment for transferring heat from fluid with higher temperature to fluid with lower temperature, so that the temperature of the fluid reaches the index specified by the flow, thereby meeting the requirements of process conditions and improving the utilization rate of energy. The heat exchanger industry relates to more than 30 industries such as heating ventilation, pressure vessels, reclaimed water treatment equipment, chemical industry, petroleum and the like, and forms an industrial chain.

Traditional circular heat exchanger internally mounted is square tube bank, often can cause 4 edges of square tube bank like this and the inner wall of circular heat exchanger can not laminate completely, can have the gap, when the gas that needs the heat transfer gets into inside the shell, gas can flow away from the gap in tube bank and the shell support, lead to partly gas that needs the heat transfer not through the inside heat exchange tube of tube bank, just directly flow to the gas outlet from the gap, in order to solve this kind of problem, the user can use simplest sealing strip to carry out local seal, but this sealing strip simple structure, the sealed effect is not good, and the heat transfer effect and the heat transfer efficiency of the heat exchanger that uses this sealing strip are also not good moreover.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a sealing strip and a heat exchanger with the sealing strip, so as to solve the problems that the existing sealing strip is simple in structure and poor in sealing effect, and the heat exchange effect and the heat exchange efficiency of the heat exchanger using the sealing strip are also poor.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a sealing strip, includes upper body and hypotenuse, is provided with the recess in the middle of the upper end of upper body, and the recess internal surface is provided with anti-skidding screw thread, and the lower extreme of upper body is provided with 2 hypotenuses, and 2 hypotenuses are symmetrical distribution, the tangent plane of sealing strip is the shape of falling "Y".

Furthermore, the inverted Y-shaped bevel edge is arranged to be of a single-layer structure or a double-layer structure, and a space is reserved between the double-layer bevel edges to form two seals.

Further, the outer end face of the bevel edge is provided with a reinforcing layer, and the reinforcing layer is fixedly connected with the bevel edge.

Further, the sealing strips and the reinforcing layers are fluororubber sealing strips.

Further, the bevel edge is in interference fit with the reinforcing plate.

The utility model provides a heat exchanger with this sealing strip, includes shell, tube sheet, curb plate, fixed plate and sealing strip, the both sides of shell are provided with air inlet and gas outlet respectively, be provided with the tube bank in the shell, the tube bank includes tube sheet, heat exchange tube and curb plate, evenly inlay the heat exchange tube in the tube sheet, the both sides of tube sheet are fixed with the curb plate, and are provided with the reinforcing plate on the curb plate, the inner wall both sides of shell all are provided with the fixed plate, are connected with the sealing strip through the bolt in the fixed plate, the tangent plane of sealing strip is "Y" shape of falling, and the upper end and the fixed plate of sealing strip cooperate, and the lower extreme and the reinforcing plate of sealing strip cooperate.

Further, the fixing plate comprises a middle fixing plate and side fixing plates, the side fixing plates are arranged on two sides of the middle fixing plate, and a caulking groove is formed between the side fixing plates and the middle fixing plate

Further, the middle fixing plate is matched with the groove, and the main bodies at two sides of the groove are matched with the caulking groove.

Further, screw holes are formed in the middle fixing plate, the side fixing plates and the upper body, and the sealing strip is fixed on the fixing plate through the screw holes by the bolts.

The beneficial effects are that: compared with the prior art, the application has the following advantages:

1. the structure of this sealing strip is "Y" shape of falling, when the air current was pressed this sealing strip, the hypotenuse of sealing strip can tightly push down the target, prevents that the air current from passing through, guarantees the leakproofness, forms the hypotenuse of certain contained angle moreover and has extremely strong stability, can not be opened by the air current like current sealing strip, and the hypotenuse of this sealing strip is bilayer structure, further improves the leakproofness and the stability of this sealing strip.

2. This install the sealing strip between curb plate and the shell of heat exchanger with this sealing strip, the sealing strip passes through the bolt to be installed on the fixed plate, conveniently dismantle and install, when the gas that needs the heat transfer gets into inside the shell, gas runs into the sealing strip and is cut off, can not direct flow direction gas outlet again, make the whole heat exchange tubes who gets into the tube bank of gas flow out after exchanging heat, improve heat transfer effect and heat exchange efficiency, hypotenuse and reinforcing plate interference fit of sealing strip moreover, when gas flow direction sealing strip, gas can exert pressure the hypotenuse, make the hypotenuse hug closely on the reinforcing plate, sealing nature and stability of sealing strip have been improved greatly.

Drawings

FIG. 1 is a schematic view of a seal strip structure;

FIG. 2 is a schematic diagram of a double-layer structure of a sealing strip structure;

FIG. 3 is a schematic view of a seal strip structure provided with a reinforcing layer;

FIG. 4 is a schematic view of a seal strip and heat exchanger having the seal strip;

fig. 5 is a schematic view of a sealing strip and a heat exchanger part with the sealing strip.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, the sealing strip 12 includes an upper body 13 and a bevel edge 14, a groove 15 is disposed in the middle of the upper end of the upper body 13, the groove 15 is convenient to clamp a component to be installed, such as the middle fixing plate 9, anti-slip threads are disposed on the inner surface of the groove 15, friction force is improved, stability of installation is further improved, the sealing strip 12 is prevented from shaking left and right, 2 bevel edges 14 are disposed at the lower end of the upper body 13, the 2 bevel edges 14 are symmetrically distributed, stability of the 2 bevel edges 14 is higher, when air flow presses the sealing strip 12, the bevel edges 14 of the sealing strip 12 tightly press a target, air flow is prevented from passing through, tightness is ensured, and the bevel edges 14 forming a certain included angle have extremely strong stability and cannot be flushed by the air flow like the existing sealing strip, the bevel edges 14 of the sealing strip 12 can be of a single-layer structure, and also can be of a double-layer structure (two bevel edges 14 with intervals are disposed at each side, as shown in fig. 2), the double-layer structure further improves the sealing property and stability of the sealing strip, and cannot be deformed along with air pressure change.

As shown in fig. 3, the outer end face of the bevel edge 14 is provided with a reinforcing layer 17, and the reinforcing layer 17 is fixedly connected with the bevel edge 14, so that the connection strength of the bevel edge 14 and the reinforcing layer 17 is ensured, cracking is prevented, the sealing performance and stability of the sealing strip 12 are further improved, the sealing strip 12 and the reinforcing layer 17 are both fluororubber sealing strips, and fluororubber has excellent high temperature resistance: the use temperature ranges from-60 to +250, and the oil resistance is excellent: the tolerance performance of the rubber is superior to other rubber in high temperature fuel oil, sulfur-containing lubricating oil, hydraulic oil, diester oil, silicate ester and other oils, the performance of strong corrosion resistant medium and strong oxidant is excellent; the stability of the rubber is superior to other rubber in the action of strong corrosive media such as fuming nitric acid, concentrated sulfuric acid, hydrochloric acid, hydrogen peroxide, concentrated alkali and the like, and the rubber has good mechanical property, electrical insulation property and radiation resistance and good high vacuum resistance.

As shown in fig. 2, the bevel edge 14 is a double-layer design, the double-layer bevel edge 14 is fixedly connected, so that the connection strength of the bevel edge 14 and the bevel edge 14 is ensured, cracking is prevented, the sealing performance and stability of the sealing strip 12 are further improved, the double-layer bevel edge 14 is a fluororubber sealing strip, and fluororubber has excellent high temperature resistance: the use temperature ranges from-60 to +250, and the oil resistance is excellent: the tolerance performance of the rubber is superior to other rubber in high temperature fuel oil, sulfur-containing lubricating oil, hydraulic oil, diester oil, silicate ester and other oils, the performance of strong corrosion resistant medium and strong oxidant is excellent; the stability of the rubber is superior to other rubber in the action of strong corrosive media such as fuming nitric acid, concentrated sulfuric acid, hydrochloric acid, hydrogen peroxide, concentrated alkali and the like, and the rubber has good mechanical property, electrical insulation property and radiation resistance and good high vacuum resistance.

The hypotenuse 14 is in interference fit with the reinforcing plate 5, a part of the bottom end of the hypotenuse 14 is parallel to the reinforcing plate 5, and when gas flows to the sealing strip 12, the gas can press the hypotenuse 14, so that the hypotenuse 14 is tightly attached to the reinforcing plate 5, and the sealing property and stability of the sealing strip are greatly improved.

As shown in fig. 2 and 3, the sealing strip and the heat exchanger with the sealing strip comprise a shell 1, a tube plate 2, side plates 4, a fixed plate 8 and sealing strips 12, wherein an air inlet 6 and an air outlet 7 are respectively arranged on two sides of the shell 1, a tube bundle is arranged in the shell 1, the air to be heat-exchanged entering from the air inlet 6 enters into the tube bundle for heat exchange, then flows out from the air outlet 7, the air inlet 6 and the air outlet 7 are both provided with safety valves, the tube bundle comprises the tube plate 2, the heat exchange tubes 3 and the side plates 4, the heat exchange tubes 3 are uniformly embedded in the tube plate 2, fins are arranged around the heat exchange tubes 3, the heat exchange efficiency is improved, the side plates 4 are fixed on two sides of the tube plate 2, the tube plate 2 is fixedly connected with the side plates 4, reinforcing plates 5 are arranged on the side plates 4, the reinforcing plates 5 are positioned in the middle of the side plates 4, the length of the reinforcing plates 5 is consistent with the length of the side plates 4, and the length of the sealing strips 12 is consistent with the length of the reinforcing plates 5, the two sides of the inner wall of the shell 1 are provided with the fixing plates 8, the positions of the fixing plates 8 correspond to the positions of the reinforcing plates 5, the sealing strips 12 fixed on the lower end surfaces of the fixing plates 8 can be just attached to the reinforcing plates 5, the inside of the fixing plates 8 are connected with the sealing strips 12 through bolts 16, the disassembly and the installation of the sealing strips 12 are convenient, when the gas needing to exchange heat enters the inside of the shell 1, a part of the gas is blocked against the sealing strips and cannot flow to the air outlet 7 any more, the gas completely enters the heat exchange tubes 3 of the tube bundle to exchange heat and then flows out, the heat exchange effect and the heat exchange efficiency are greatly improved, the upper ends of the sealing strips 12 are matched with the fixing plates 8, the lower ends of the sealing strips 12 are matched with the reinforcing plates 5, the inclined edges 14 of the sealing strips 12 are in interference fit with the reinforcing plates 5, and when the gas flows to the sealing strips 12, the gas will press the bevel edge 14, so that the bevel edge 14 is tightly attached to the reinforcing plate 5, and the sealing performance and stability of the sealing strip are greatly improved.

The fixed plate 8 includes middle fixed plate 9 and side fixed plate 10, and the both sides of middle fixed plate 9 all are provided with side fixed plate 10, and middle fixed plate 9 and shell 1 fixed connection improve joint strength and stability, and constitute caulking groove 11 between side fixed plate 10 and the middle fixed plate 9, caulking groove 11 conveniently blocks the upper half of sealing strip 12, guarantees the connection stability of fixed plate 8 and sealing strip 12.

The recess 15 cooperatees with middle fixed plate 9, and the main part of recess 15 both sides cooperatees with caulking groove 11, makes things convenient for the cooperation of sealing strip 12 and fixed plate 8, all is provided with the screw hole on upper body 13, middle fixed plate 9 and the side fixed plate 10, and bolt 16 passes through the screw hole to fix sealing strip 12 on fixed plate 8, and the bolt fastening is easy to assemble and dismantles.

The utility model provides a sealing strip and a thought and an implementation method of a heat exchanger with the sealing strip, and the specific application ways are many, the above is only a preferred embodiment of the utility model, and it should be pointed out that, for a person skilled in the art, a plurality of improvements can be made without departing from the principle of the utility model, and the improvements are also considered as the protection scope of the utility model.

Claims

1. A sealing strip, characterized in that: the anti-skid sealing strip comprises an upper body (13) and inclined edges (14), wherein a groove (15) is formed in the middle of the upper end of the upper body (13), anti-skid threads are arranged on the inner surface of the groove (15), 2 inclined edges (14) are formed in the lower end of the upper body (13), the 2 inclined edges (14) are symmetrically distributed, and the section of the sealing strip (12) is in an inverted Y shape.

2. The weatherstrip according to claim 1, characterized in that: the inverted Y-shaped bevel edges (14) are arranged to be of a single-layer structure or a double-layer structure, and a space is reserved between the double-layer bevel edges (14) to form two seals.

3. The weatherstrip according to claim 1, characterized in that: the outer end face of the bevel edge (14) is provided with a reinforcing layer (17), and the reinforcing layer (17) is fixedly connected with the bevel edge (14).

4. The weatherstrip according to claim 1, characterized in that: the sealing strip (12) and the reinforcing layer (17) are fluororubber sealing strips.

5. The weatherstrip according to claim 1, characterized in that: the bevel edge (14) is in interference fit with the reinforcing plate (5).

6. A heat exchanger with the sealing strip, characterized in that: including shell (1), tube sheet (2), curb plate (4), fixed plate (8) and sealing strip (12), the both sides of shell (1) are provided with air inlet (6) and gas outlet (7) respectively, be provided with the tube bank in shell (1), the tube bank includes tube sheet (2), heat exchange tube (3) and curb plate (4), evenly inlay heat exchange tube (3) in tube sheet (2), the both sides of tube sheet (2) are fixed with curb plate (4), and are provided with reinforcing plate (5) on curb plate (4), the inner wall both sides of shell (1) all are provided with fixed plate (8), are connected with sealing strip (12) through bolt (16) in fixed plate (8), the tangent plane of sealing strip (12) is the shape of falling "Y", and the upper end of sealing strip (12) cooperatees with fixed plate (8), and the lower extreme of sealing strip (12) cooperatees with reinforcing plate (5).

7. The heat exchanger with the sealing strip according to claim 6, wherein: the fixing plate (8) comprises a middle fixing plate (9) and side fixing plates (10), the side fixing plates (10) are arranged on two sides of the middle fixing plate (9), and a caulking groove (11) is formed between the side fixing plates (10) and the middle fixing plate (9).

8. The heat exchanger with the sealing strip according to claim 7, wherein: the middle fixing plate (9) is matched with the groove (15), and the main bodies at two sides of the groove (15) are matched with the caulking grooves (11).

9. The heat exchanger with the sealing strip according to claim 7, wherein: screw holes are formed in the middle fixing plate (9), the side fixing plates (10) and the upper body (13), and the sealing strips (12) are fixed on the fixing plate (8) through the screw holes by bolts (16).