CN213871088U - Composite gasket - Google Patents
Composite gasket Download PDFInfo
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- CN213871088U CN213871088U CN202021487228.5U CN202021487228U CN213871088U CN 213871088 U CN213871088 U CN 213871088U CN 202021487228 U CN202021487228 U CN 202021487228U CN 213871088 U CN213871088 U CN 213871088U
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Abstract
The utility model discloses a compound gasket belongs to equipment gasket technical field, solves the unable good sealing of guaranteeing of current compound reinforcing gasket, and the winding is filled up the winding part and is dispersed easily and lead to the technical problem of inefficacy. A composite gasket, comprising: from the inner ring to the outer ring, a reinforcing ring part, a winding pad body part and a metal wave tooth composite gasket part are respectively arranged; the metal wave tooth composite gasket is a flexible graphite metal wave tooth composite gasket, namely the upper layer and the lower layer of the metal framework are made of flexible graphite, and the upper surface and the lower surface of the metal framework are provided with wave teeth; the winding pad body part is a winding gasket structure and is formed by alternately winding stainless steel and flexible graphite; the reinforcing ring part is a ring formed by stainless steel. The utility model discloses a winding pad accords with the type with metal ripples tooth composite pad piece, because the rebound resilience of winding pad is higher, can guarantee under the tight not in place prerequisite of heat relatively, prevents to leak.
Description
Technical Field
The utility model belongs to the technical field of equipment gasket, relate to pipeline under pressure sealing element makes the field.
Background
The common heat exchanger gaskets are classified into a winding gasket, a flexible graphite metal corrugated tooth gasket and a flexible graphite composite reinforced gasket. The gaskets of the several types have independent standards, and the sizes of the gaskets are selected according to the standards when the gaskets are used.
Utility model patent CN202327093U discloses a compound gasket. The utility model adopts the composite manufacture of the corrugated gasket and the tooth-shaped gasket; a good seal cannot be guaranteed.
In the gasket used by the equipment, a good sealing cannot be ensured at some parts by depending on a composite reinforced gasket (a metal corrugated tooth composite gasket or a flexible graphite composite reinforced gasket); and because the sealing surface is small in width and large in diameter, if a winding pad (GB/T29463.2) is selected, a positioning ring is not arranged, and a winding part is easy to scatter to cause failure.
Disclosure of Invention
The utility model discloses can't guarantee good sealed to current compound reinforcing gasket, the winding of winding pad twines the part and scatters the technical problem that leads to becoming invalid easily, provides a neotype compound gasket, forms for the compound manufacturing of ripples tooth gasket and winding gasket.
The technical scheme of the utility model is that:
the utility model provides a compound gasket, characterized by: the method comprises the following steps: from the inner ring to the outer ring, a reinforcing ring part, a winding pad body part and a metal wave tooth composite gasket part are respectively arranged; the metal wave tooth composite gasket is a flexible graphite metal wave tooth composite gasket, namely the upper layer and the lower layer of the metal framework are made of flexible graphite, and the upper surface and the lower surface of the metal framework are provided with wave teeth; the winding pad body part is a winding gasket structure and is formed by alternately winding stainless steel and flexible graphite; the reinforcing ring part is a ring formed by stainless steel.
Further, the radial width of the body part of the winding pad is L2, and the radial width of the metal corrugated tooth composite gasket is L1; the ratio of L1 to L2 is 5/7 to 5/8.
Further, the metal corrugated composite gasket has at least 3 teeth.
Further, the performance requirement of the body part of the winding pad meets the GB/T29463.2 requirement.
Further, the metal skeleton of the metal corrugated composite gasket is made of 304 stainless steel (06Gr19Ni10), 316 stainless steel (06Cr17Ni12Mo2) or 316L stainless steel (022Cr17Ni12Mo 2).
Furthermore, the performance and the manufacturing mode of the metal corrugated tooth composite gasket meet the requirements of GB/T19066.3.
Further, the thickness t1 of the metal corrugated composite gasket is 0.1-0.15mm smaller than the thickness t2 of the winding pad body.
Further, the inner diameter D1, the outer diameter D and the split form of the gasket are selected according to GB/T29463.2.
Further, the width and the thickness of the reinforcement ring part meet the requirements of GB/T29463.2.
The principle of the utility model is that: the outer ring adopts a flexible graphite metal wave tooth composite gasket (or a metal wave tooth composite gasket) as a positioning ring, and the inner side adopts a winding gasket. Therefore, the stability of the winding pad can be enhanced, and the double sealing function can be achieved.
The technical effects of the utility model:
the utility model discloses mainly to floating head heat exchanger, the tube side is hot medium, and the shell side is the cold medium, and floats the head side and need the tight heat exchanger of heat. Before equipment installation is put into use, need not install the floating head lid again earlier, put into use with tube side heat medium, heat pipe bundle and floating head, heat to predetermined temperature after, heat to the floating head bolt tightly in order to guarantee well sealedly. And (4) after the thermal tightening is finished, the floating head cover is installed again, and the shell side cold medium is transported. At the moment, the cold medium can influence the pretightening force of the floating head bolt, and the floating head bolt is loosened to a certain degree, so that the gasket at the position is leaked. Usually, the floating head gasket is a metal wave tooth composite gasket, the rebound rate of the gasket is lower than that of a wound gasket, and if the gasket is not hot and tight, the gasket can be leaked.
The utility model discloses a winding pad accords with the type with metal ripples tooth composite pad piece, because the rebound resilience of winding pad is higher, can guarantee under the tight not in place prerequisite of heat relatively, prevents to leak.
The key points of the invention are as follows: the gasket is manufactured by combining a metal corrugated tooth composite gasket or a flexible graphite composite reinforced gasket and a winding gasket; l1: l2 is 5: 7 to 5: 8; t1 is 0.1-0.15mm smaller than t 2; the rebound rate is suitable, and a good sealing effect can be realized.
Drawings
FIG. 1 is a schematic view of a composite gasket of the present invention;
Detailed Description
The present invention is described in further detail below.
The utility model provides a compound gasket, characterized by: the inner diameter D1 and the outer diameter D of the gasket and the split form are selected according to GB/T29463.2; the method comprises the following steps:
the metal corrugated tooth composite gasket or the flexible graphite composite reinforced gasket part 002 is characterized in that a metal framework is made of 304 stainless steel (06Gr19Ni10), 316 stainless steel (06Cr17Ni12Mo2) or 316L stainless steel (022Cr17Ni12Mo2), the width of the metal framework is L1, the thickness of the metal framework after a graphite layer is added is T1, and the performance and the manufacturing mode meet the requirements of GB/T19066.3; the upper and lower outer layers of the metal framework are flexible graphite;
winding the pad body part 003 by alternately winding stainless steel and flexible graphite; the material is made of the same material as 002, the performance requirement meets the requirement of GB/T29463.2, the width of the material is L2, and the thickness of the material is T2;
Further, t1 is 0.1-0.15mm smaller than t 2;
further, the ratio of L1 to L2 is about 5/7 to 5/8 and satisfies that there are at least 3 teeth in section 002.
Example (c): the ethylene branch company ethylene workshop dilution steam generator E-1270B frequently leaks, and the problem still cannot be solved after two new tube bundles are replaced. After the gradual investigation, think that the former metal ripples tooth composite pad who adopts of floating head department can produce the pine under the tight prerequisite that does not arrive the position of heat and take off, lead to floating head flange mouth to leak, adopt obvious improvement behind this novel composite pad.
Claims (9)
1. The utility model provides a compound gasket, characterized by: the method comprises the following steps: from the inner ring to the outer ring, a reinforcing ring part (004), a winding pad body part (003) and a metal corrugated tooth composite gasket part (002) are respectively arranged;
the metal wave tooth composite gasket is a flexible graphite metal wave tooth composite gasket, namely the upper layer and the lower layer of the metal framework are made of flexible graphite, and the upper surface and the lower surface of the metal framework are provided with wave teeth;
the winding pad body part is a winding gasket structure and is formed by alternately winding stainless steel and flexible graphite;
the reinforcing ring part is a ring formed by stainless steel.
2. The composite gasket of claim 1 wherein the wound gasket body portion (003) has a radial width of L2, the metal corrugated composite gasket has a radial width of L1;
the ratio of L1 to L2 is 5/7 to 5/8.
3. A composite gasket according to claim 1, wherein the metal corrugated composite gasket has at least 3 teeth.
4. A composite gasket according to claim 1, wherein the body portion of the mat is wound to meet the requirements of GB/T29463.2.
5. A composite gasket according to claim 1, wherein the metal skeleton of the metal corrugated composite gasket is made of 304 stainless steel (06Gr19Ni10), 316 stainless steel (06Cr17Ni12Mo2) or 316L stainless steel (022Cr17Ni12Mo 2).
6. A composite gasket according to claim 1, wherein the metal corrugated composite gasket is manufactured in a manner and performance compatible with GB/T19066.3.
7. The composite gasket of claim 1 wherein the metal corrugated composite gasket thickness t1 is 0.1-0.15mm less than the wound gasket body thickness t 2.
8. A composite gasket according to claim 1, wherein the gasket inner diameter D1, outer diameter D and split form are selected in accordance with GB/T29463.2.
9. A composite gasket according to claim 1, wherein the width and thickness of the reinforcement ring portion conform to the requirements of GB/T29463.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487228.5U CN213871088U (en) | 2020-07-24 | 2020-07-24 | Composite gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487228.5U CN213871088U (en) | 2020-07-24 | 2020-07-24 | Composite gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213871088U true CN213871088U (en) | 2021-08-03 |
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ID=77033519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021487228.5U Active CN213871088U (en) | 2020-07-24 | 2020-07-24 | Composite gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213871088U (en) |
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2020
- 2020-07-24 CN CN202021487228.5U patent/CN213871088U/en active Active
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