WO2021248807A1

WO2021248807A1 - Oil-resistant and anti-corrosive polymer sealing gasket for plate heat exchanger

Info

Publication number: WO2021248807A1
Application number: PCT/CN2020/128251
Authority: WO
Inventors: 陈明; 陈庚; 高健; 徐殿国
Original assignee: 扬州派斯特换热设备有限公司
Priority date: 2020-06-11
Filing date: 2020-11-12
Publication date: 2021-12-16
Also published as: CN111895848A

Abstract

An oil-resistant and anti-corrosive polymer sealing gasket for a plate heat exchanger, comprising a sealing plate (1). The sealing plate (1) comprises a wear-resistant layer (101), a corrosion-resistant layer (102), an oil-resistant layer (103), a waterproof layer (104), and a reinforcement layer (105); the inner wall of the wear-resistant layer (101) is fixedly connected to the surface of the corrosion-resistant layer (102); and the inner wall of the corrosion-resistant layer (102) is fixedly connected to the surface of the oil-resistant layer (103). The wear-resistant layer (101) is intended for improving the wear resistance of the sealing plate (1) so as to reduce the wear of the sealing plate; the corrosion-resistant layer (102) can effectively prevent a corrosive liquid from damaging the sealing plate (1) so as to prolong the service life of the sealing plate (1); the oil-resistant layer (103) and the waterproof layer (104) improve the sealing performance of the sealing plate (1) so as to avoid the water and oil leakage phenomenon of the sealing plate (1); the reinforcement layer improves the use intensity of the sealing plate (1) so as to promote the usability of the sealing plate (1); and the use of a slot, an insertion rod, and a sealing ring in cooperation causes a more ideal compacting effect between the adjacent sealing plates (1), thus improving the heat exchange effect of the heat exchanger.

Description

Oil-resistant and anticorrosive polymer sealing gasket for plate heat exchanger

Technical field

The invention relates to the technical field of polymer sealing gaskets, in particular to an oil-resistant and anticorrosive polymer sealing gasket used for plate heat exchangers.

Background technique

The plate heat exchanger is composed of a group of thin metal corrugated plates with holes for the two liquids to pass through. The metal corrugated plates are installed in a frame with fixed compression plates and movable compression plates at the front and back. , And clamped with clamping bolts, the plate is equipped with rubber sealing gaskets to seal the fluid channels, and guide the cold and hot fluids to flow alternately into the respective channels. The fluid flow rate, physical properties, pressure difference and temperature difference determine In addition to the number and size of the plates, the corrugated plate not only intensifies the turbulence, but also forms many supporting points, which are enough to withstand the pressure difference between the media. The rectangular channels are formed between the plates, and the heat exchange is carried out through the plates, thus completing the plate type For the energy conversion in the heat exchanger, the plates are sealed with rubber gaskets. Generally, the working pressure does not exceed 2.5MPa and the working temperature does not exceed 160°C. There are two ways to fix the gasket of the plate heat exchanger on the plate. One is to directly paste the gasket into the sealing groove of the plate with an adhesive, and the other is to use the snap on the gasket. Fixed on the plate, this type of gasket is also called a non-adhesive gasket. The use of a non-adhesive gasket can make the overhaul and maintenance of the plate heat exchanger faster, convenient and quick to replace the gasket, and reduce maintenance costs.

However, the existing gaskets have the following problems:

1. Existing sealing gaskets have poor oil resistance, corrosion resistance and wear resistance. It is easy to cause cracks and damages to the gasket during use, which reduces the sealing performance of the gasket and causes heat. The exchanger has poor sealing effect, unsatisfactory heat exchange effect, short service life, and frequent replacement, which increases the cost and is difficult to meet the needs of users;

2. The rubber sealing ring and heat exchanger plate on the existing market need to use some auxiliary tools (such as glue gun) during the installation process, which makes the installation process more complicated, and it is relatively relatively disassembled in the later stage. trouble.

Utility model content

(1) Technical problems solved

In view of the shortcomings of the prior art, the present invention provides an oil-resistant and anti-corrosive polymer sealing gasket for plate heat exchangers, which solves the problem of poor oil resistance, corrosion resistance, and wear resistance of the existing gaskets and complicated installation. problem.

(2) Technical solution

In order to achieve the above object, the present invention provides the following technical solutions: an oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers, including a sealing sheet, the sealing sheet including a wear-resistant layer, a corrosion-resistant layer, an oil-resistant layer, and a waterproof The inner wall of the wear-resistant layer is fixedly connected with the surface of the anti-corrosion layer, the inner wall of the anti-corrosion layer is fixedly connected with the surface of the oil-resistant layer, and the inner wall of the oil-resistant layer is fixedly connected with the surface of the waterproof layer, The inner wall of the waterproof layer is fixedly connected to the surface of the reinforcement layer, the surface of the sealing sheet is fixedly connected with a plate, and the back and the surface of the plate are provided with gasket grooves. The surface of the plate is attached and connected, the two sides of the sealing plate are fixedly connected to the limit block, the surface of the limit block is provided with a card slot, and the back and the surface of the plate are provided with a limit slot. The inner wall of the position groove is slidably connected to one side of the limit block, the inner wall of the limit groove is provided with a groove, the inner wall of the groove is fixedly connected with a spring, and the end of the spring is fixedly connected with a moving plate, so Both sides of the moving plate are slidably connected with the inner wall of the groove, the surface of the moving plate is fixedly connected with a clamping block, and the end of the clamping block is clamped with the inner wall of the clamping slot.

As a preferred technical solution of the present invention, an insert rod is fixedly connected to the back of the sealing sheet, a slot is opened on the surface of the sealing sheet, and the end of the insert rod on the inner wall of the slot is clamped.

As a preferred technical solution of the present invention, the wear-resistant layer is a polyurethane rubber layer, the corrosion-resistant layer is a polytetrafluoroethylene layer, and the oil-resistant layer is an oil-resistant asbestos-free rubber layer.

As a preferred technical solution of the present invention, the waterproof layer is an oil-resistant plant fiber layer, and the reinforcement layer is a glass fiber layer.

As a preferred technical solution of the present invention, the inner wall of the groove is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to one side of the moving plate.

As a preferred technical solution of the present invention, a circular hole is opened in the interior of the plate, and a sealing ring is provided on the inner wall of the slot.

As a preferred technical solution of the present invention, the inner walls of the two clamping grooves and the ends of the clamping block are both arc-shaped, and the shape of the gasket groove corresponds to the shape of the sealing sheet.

As a preferred technical solution of the present invention, the limiting groove is provided on one side of the spacer groove, and the surface diameter of the limiting block is adapted to the diameter of the inner wall of the limiting groove.

(3) Beneficial effects

Compared with the prior art, the present invention provides an oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers, which has the following beneficial effects:

1. The oil-resistant and anti-corrosive polymer sealing gasket for plate heat exchangers uses a wear-resistant layer to improve the wear resistance of the sealing sheet and reduce the wear of the sealing sheet. The anti-corrosion layer can effectively prevent corrosive liquid from attacking the sealing sheet. Cause damage, improve the service life of the sealing sheet, the oil-resistant layer and the waterproof layer improve the sealing performance of the sealing sheet, can prevent the sealing sheet from leaking water and oil, and the reinforcement layer improves the use strength of the sealing sheet and strengthens the sealing sheet. Using performance, the coordinated use of the slot, the plunger and the sealing ring can make the adjacent sealing sheet more compact, thereby improving the heat exchange effect of the heat exchanger.

2. The oil-resistant and anticorrosive polymer sealing gasket used for plate heat exchangers, through the cooperation of the limit groove and the limit block, is to make the installation between the sealing sheet and the plate more convenient, with grooves, springs, and moving The use between the plate and the sliding groove can limit the position of the card block and the card groove, which improves the limit effect between the sealing plate and the plate. It is also more convenient and more practical when the sealing plate is replaced and cleaned. high.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the connection structure between the sealing sheet and the limiting block of the present invention;

Figure 3 is a schematic diagram of the structure of the sealing sheet of the present invention;

Fig. 4 is an enlarged view of A in Fig. 1 of the present invention;

Fig. 5 is a schematic diagram of the connection structure between the sealing sheet and the sealing sheet of the present invention.

In the picture: 1. Sealing sheet; 101, wear-resistant layer; 102, corrosion-resistant layer; 103, oil-resistant layer; 104, waterproof layer; 105, reinforcement layer; 2. plate; 3. gasket groove; 4. limit Block; 5. card slot; 6, limit slot; 7, groove; 8, spring; 9, moving plate; 10, card block; 11, insert rod; 12, slot; 13, slide groove; 14, round Hole; 15, sealing ring.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example

Please refer to Figures 1-5, the present invention provides the following technical solutions: an oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers, including a sealing sheet 1, which includes a wear-resistant layer 101, a corrosion-resistant layer 102, The oil-resistant layer 103, the waterproof layer 104 and the reinforcement layer 105, the inner wall of the wear-resistant layer 101 and the surface of the anti-corrosion layer 102 are fixedly connected, the inner wall of the anti-corrosion layer 102 and the surface of the oil-resistant layer 103 are fixedly connected, and the inner wall of the oil-resistant layer 103 is connected to the waterproof layer. The surface of the layer 104 is fixedly connected, the inner wall of the waterproof layer 104 is fixedly connected to the surface of the reinforcement layer 105, the surface of the sealing sheet 1 is fixedly connected with a plate 2, and the back and the surface of the plate 2 are provided with gasket grooves 3, gaskets The inner wall of the groove 3 is attached to the surface of the sealing sheet 1. Both sides of the sealing sheet 1 are fixedly connected to the limiting block 4. The surface of the limiting block 4 is provided with a card slot 5, and the back and the surface of the plate 2 are both limited. Position groove 6, the inner wall of the limit groove 6 is slidingly connected with one side of the limit block 4, the inner wall of the limit groove 6 is provided with a groove 7, and the inner wall of the groove 7 is fixedly connected with a spring 8, and the end of the spring 8 is fixed A moving plate 9 is connected. Both sides of the moving plate 9 are slidably connected to the inner wall of the groove 7. The surface of the moving plate 9 is fixedly connected with a clamping block 10, and the end of the clamping block 10 is clamped with the inner wall of the clamping slot 5.

In this embodiment, the sealing sheet 1 is composed of a wear-resistant layer 101, a corrosion-resistant layer 102, an oil-resistant layer 103, a waterproof layer 104 and a reinforcement layer 105, so that the sealing sheet 1 has good wear resistance, corrosion resistance, oil resistance, waterproofness and strength. This improves the service life of the sealing sheet 1 and enhances the sealing effect of the sealing sheet 1. The tightly snapped connection between the inserting rod 11 and the slot 12 makes the compact effect between the adjacent sealing sheets 1 more ideal and improves The heat exchange effect of the heat exchanger is more practical.

Specifically, the back surface of the sealing sheet 1 is fixedly connected with an inserting rod 11, the surface of the sealing sheet 1 is provided with a slot 12, and the end of the inserting rod 11 on the inner wall of the slot 12 is clamped.

In this embodiment, through the use of the plunger 11 and the slot 12, the tightness of the adjacent sealing sheets 1 can be improved, so that the sealing effect of the adjacent sealing sheets 1 is more ideal, and the gap between the adjacent sealing sheets 1 is avoided. , The sealing effect of the sealing sheet 1 is reduced, thereby affecting the heat exchange effect of the heat exchanger.

Specifically, the wear-resistant layer 101 is a polyurethane rubber layer, the corrosion-resistant layer 102 is a polytetrafluoroethylene layer, and the oil-resistant layer 103 is an oil-resistant asbestos-free rubber layer.

In this embodiment, the polyurethane rubber layer can effectively reduce the abrasion of the sealing sheet 1, and the polytetrafluoroethylene layer strengthens the anti-corrosion performance of the sealing sheet 1, and prevents the corrosive liquid from damaging the sealing sheet 1, thereby affecting the heat exchange of the heat exchanger. As a result, the oil-resistant non-asbestos rubber layer improves the sealing effect of the sealing sheet 1.

Specifically, the waterproof layer 104 is an oil-resistant plant fiber layer, and the reinforcement layer 105 is a glass fiber layer.

In this embodiment, the oil-resistant plant fiber layer can improve the waterproof performance of the sealing sheet 1, avoid oil and water leakage of the sealing sheet 1, and strengthen the sealing effect of the sealing sheet 1. The glass fiber layer effectively strengthens the use of the sealing sheet 1. Strength, improve the service life of the sealing sheet 1.

Specifically, the inner wall of the groove 7 is provided with a sliding groove 13, and the inner wall of the sliding groove 13 is slidably connected to one side of the moving plate 9.

In this embodiment, through the use of the sliding groove 13, the movable plate 9 can be made more stable when sliding, and the stability of the movable plate 9 is improved.

Specifically, a circular hole 14 is provided inside the plate 2, and a sealing ring 15 is provided on the inner wall of the slot 12.

In this embodiment, the circular hole 14 is provided to facilitate the limit of the plate 2 and the heat exchanger, which is more convenient during installation. The sealing ring 15 is provided to improve the tight fit between the sealing plates 1 and make the heat exchanger in It is more ideal when used, thereby improving the usability of the sealing sheet 1.

Specifically, the inner walls of the two locking grooves 5 and the ends of the locking block 10 are both arc-shaped, and the shape of the gasket groove 3 corresponds to the shape of the sealing sheet 1.

In this embodiment, the inner wall of the clamping groove 5 and the end of the clamping block 10 are both arc-shaped, which is to facilitate the installation of the sealing sheet 1 so that the sealing sheet 1 is more convenient when installing, and the sealing sheet 1 is replaced at the same time It is also relatively easy, reducing the workload of the staff.

Specifically, the limiting groove 6 is provided on one side of the spacer groove 3, and the surface diameter of the limiting block 4 is adapted to the inner wall diameter of the limiting groove 6.

In this embodiment, the limiting groove 6 is provided on one side of the gasket groove 3 to facilitate the sealing sheet 1 and the plate 2 to be attached together, thereby improving the installation effect of the sealing sheet 1.

The working principle and use process of the present invention: First, when the sealing sheet 1 is installed, the limit block 4 is attached to the gasket groove 3, and the limit block 4 slides on the inner wall of the limit groove 6, when the card slot 5 and When the clamping block 10 is in contact, the clamping block 10 squeezes the moving plate 9 to move on the inner wall of the chute 13, and the moving plate 9 squeezes the spring 8. Through the elastic force of the spring 8, the clamping block 10 restricts the clamping groove 5 to make the sealing sheet 1 The installation is more convenient. Through the use of the wear-resistant layer 101, the wear of the sealing sheet 1 can be effectively reduced. The anti-corrosion layer 102 strengthens the anti-corrosion performance of the sealing sheet 1 and prevents the corrosive liquid from damaging the sealing sheet 1, thereby affecting heat exchange. The oil-resistant layer 103 improves the sealing performance of the sealing sheet 1, and the waterproof layer 104 can improve the waterproof performance of the sealing sheet 1, avoiding oil and water leakage of the sealing sheet 1, and strengthening the sealing effect of the sealing sheet 1. , The reinforcement layer 105 strengthens the use strength of the sealing sheet 1 and improves the service life of the sealing sheet 1. The use of the plunger 11 and the slot 12 can improve the tightness of the adjacent sealing sheet 1 so that the adjacent sealing sheet 1 The sealing effect is more ideal, avoiding gaps between adjacent sealing sheets 1 and reducing the sealing effect of the sealing sheets 1, thereby affecting the heat exchange effect of the heat exchanger.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it is still for those skilled in the art. The technical solutions described in the foregoing embodiments can be modified, or some of the technical features can be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

An oil-resistant and anticorrosive polymer sealing gasket for a plate heat exchanger, comprising a sealing sheet (1), characterized in that: the sealing sheet (1) includes a wear-resistant layer (101), a corrosion-resistant layer (102), The oil-resistant layer (103), the waterproof layer (104) and the reinforcement layer (105), the inner wall of the wear-resistant layer (101) is fixedly connected to the surface of the anti-corrosion layer (102), and the inner wall of the anti-corrosion layer (102) It is fixedly connected with the surface of the oil-resistant layer (103), the inner wall of the oil-resistant layer (103) is fixedly connected with the surface of the waterproof layer (104), and the inner wall of the waterproof layer (104) is fixedly connected with the surface of the reinforcement layer (105) , The surface of the sealing piece (1) is fixedly connected with a plate (2), the back and the surface of the plate (2) are both provided with a gasket groove (3), and the inner wall of the gasket groove (3) It is attached to the surface of the sealing sheet (1), and both sides of the sealing sheet (1) are fixedly connected to the limiting block (4), and the surface of the limiting block (4) is provided with a card slot (5), Both the back and the surface of the plate (2) are provided with a limiting groove (6), the inner wall of the limiting groove (6) is slidingly connected to one side of the limiting block (4), and the limiting groove (6) The inner wall of) is provided with a groove (7), the inner wall of the groove (7) is fixedly connected with a spring (8), and the end of the spring (8) is fixedly connected with a moving plate (9), and the moving plate Both sides of (9) are slidably connected to the inner wall of the groove (7), the surface of the movable plate (9) is fixedly connected with a clamping block (10), and the end of the clamping block (10) is connected to the clamping slot ( 5) The inner wall is clamped.
The oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers according to claim 1, characterized in that: the back of the sealing sheet (1) is fixedly connected with an inserting rod (11), and the sealing sheet The surface of (1) is provided with a slot (12), and the end of the insert rod (11) on the inner wall of the slot (12) is clamped.
The oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers according to claim 1, wherein the wear-resistant layer (101) is a polyurethane rubber layer, and the corrosion-resistant layer (102) is A polytetrafluoroethylene layer, and the oil-resistant layer (103) is an oil-resistant asbestos-free rubber layer.
The oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers according to claim 1, wherein the waterproof layer (104) is an oil-resistant vegetable fiber layer, and the reinforcement layer (105) is glass Fibre layer.
An oil-resistant and anticorrosive polymer sealing gasket for a plate heat exchanger according to claim 1, wherein the inner wall of the groove (7) is provided with a sliding groove (13), and the sliding groove ( The inner wall of 13) is slidingly connected with one side of the moving plate (9).
An oil-resistant and anticorrosive polymer sealing gasket for a plate heat exchanger according to claim 1, wherein the plate (2) is provided with a round hole (14) inside, and the slot ( The inner wall of 12) is provided with a sealing ring (15).
The oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers according to claim 1, characterized in that: the inner walls of the two clamping grooves (5) and the ends of the clamping block (10) are both It has an arc shape, and the shape of the gasket groove (3) corresponds to the shape of the sealing sheet (1).
An oil-resistant and anticorrosive polymer sealing gasket for plate heat exchangers according to claim 1, wherein the limiting groove (6) is provided on one side of the gasket groove (3), and the The size of the surface diameter of the limiting block (4) is matched with the diameter of the inner wall of the limiting groove (6).