Digital valve controller and sealing gasket assembly for digital valve controller
阅读说明:本技术 数字阀控制器和用于数字阀控制器的密封垫圈组件 (Digital valve controller and sealing gasket assembly for digital valve controller ) 是由 R·F·赫德 于 2019-08-21 设计创作,主要内容包括:数字阀控制器和用于数字阀控制器的密封垫圈组件包括密封垫圈组件。密封垫圈组件包括本体。本体具有孔。密封垫圈组件包括凸缘。凸缘耦接到本体并包括通道、面密封凹槽和外部密封凹槽。密封垫圈组件包括面密封件。面密封件设置在面密封凹槽内。密封垫圈组件包括外部密封件。外部密封件设置在外部密封凹槽内。(The digital valve controller and the sealing gasket assembly for the digital valve controller include a sealing gasket assembly. The sealing gasket assembly includes a body. The body has a hole. The seal gasket assembly includes a flange. The flange is coupled to the body and includes a channel, a face seal groove, and an outer seal groove. The seal gasket assembly includes a face seal. The face seal is disposed within the face seal groove. The seal gasket assembly includes an outer seal. An outer seal is disposed within the outer seal groove.)
1. A digital valve controller comprising:
a main housing having an opening;
a terminal closure having an inner surface defining a bore, the bore of the terminal closure being aligned with the opening of the main housing;
a seal gasket assembly disposed within the bore, wherein the seal gasket assembly comprises:
a body having a bore;
a flange coupled to the body and having a channel, a face seal groove, and an outer seal groove;
a face seal disposed within the face seal groove, the face seal engaged with the main housing;
an outer seal disposed within the outer seal groove, the outer seal engaging the inner surface of the terminal enclosure; and
an electrical coupling extending through the channel of the flange and the bore of the body.
2. The digital valve controller of claim 1, wherein the flange comprises a first portion and a second portion, the first portion comprising a potting cup and the face seal groove, further comprising a pot disposed within the potting cup of the flange and a pot disposed within the bore of the body of the seal gasket assembly.
3. The digital valve controller of claim 2, wherein the body of the seal gasket assembly includes an inner surface defining the bore, the inner surface tapering inwardly toward the flange.
4. The digital valve controller of claim 2, wherein the potting cup comprises rounded corners.
5. The digital valve controller of claim 1, wherein the body of the sealing gasket assembly is coupled to the flange of the sealing gasket assembly via a press-fit connection.
6. The digital valve controller of claim 5, wherein the flange includes a collar that receives the body of the seal gasket assembly to form the press-fit connection.
7. The digital valve controller of claim 5, wherein the flange includes an external step within which the body of the seal gasket assembly is received to form the press-fit connection.
8. The digital valve controller of claim 1, wherein the flange comprises a first portion and a second portion, the first portion comprising the face seal groove and the second portion comprising a coupling groove, the body of the seal gasket assembly being received within the coupling groove.
9. The digital valve controller of claim 1, wherein the body of the seal gasket assembly includes an inner surface defining the bore, a coupling being formed between the inner surface of the body and the flange.
10. The digital valve controller of claim 1, wherein the body of the seal gasket assembly includes an inner surface having one or more inwardly extending protrusions, the inner surface of the body defining the aperture.
11. A sealing gasket assembly comprising:
a body having a bore;
a flange coupled to the body and including a channel, a face seal groove, and an outer seal groove;
a face seal disposed within the face seal groove; and
an outer seal disposed within the outer seal groove.
12. The seal gasket assembly of claim 11, wherein the flange comprises a first portion and a second portion, the first portion comprising a potting cup and the face seal groove.
13. The seal gasket assembly of claim 12, wherein the potting cup includes rounded corners.
14. The sealing gasket assembly of claim 12, further comprising an electrical coupling extending through the channel of the flange and the aperture of the body.
15. The seal gasket assembly of claim 14, further comprising a pot disposed within the potting cup of the flange and a pot disposed within the bore of the body of the seal gasket assembly.
16. The seal gasket assembly of claim 15, wherein the body of the seal gasket assembly includes an inner surface defining the bore, the inner surface including an anti-blow out feature.
17. A sealing gasket assembly comprising:
a body comprising a first portion, a second portion, a flange disposed between the first portion and the second portion, and defining a bore comprising a pair of longitudinally spaced apart grooves;
a pair of fasteners received within respective ones of the grooves of the body;
the plug connector is arranged in the hole of the body and located between the fastening pieces, and the plug connector comprises a channel; and
an electrical coupling extending through the passage of the plug and the bore of the body.
18. The sealing gasket assembly of claim 17, wherein the insert includes a first portion and a second portion, the first portion defining a potting cup.
19. The seal gasket assembly of claim 18, further comprising a potting disposed within the potting cup and a potting disposed within the bore of the body and adjacent the second portion of the insert.
20. The sealing gasket assembly of claim 17, wherein the insert includes an outer groove, further comprising a seal disposed within the outer groove.
21. A method of assembling a sealing gasket assembly comprising:
positioning an electrical coupling through a channel of a flange of the seal gasket assembly and an aperture of a body of the seal gasket assembly, the electrical coupling including a first portion extending from the flange of the seal gasket assembly and a second portion extending from the second portion of the seal gasket assembly; and
coupling a connector to the first portion of the electrical coupling and the second portion of the electrical coupling after the electrical coupling is positioned through the channel of the flange of the seal gasket assembly and the aperture of the body of the seal gasket assembly.
22. The method of claim 21, wherein the flange and the body are coupled prior to positioning the electrical coupling through the channel of the flange of the seal gasket assembly and the aperture of the body of the seal gasket assembly.
23. A digital valve controller comprising:
a main housing having an opening;
a terminal enclosure having an aperture, the aperture of the terminal enclosure aligned with the opening of the main housing;
a seal gasket assembly disposed within the bore, the seal gasket assembly comprising:
a sealing gasket having a hole;
a pair of inserts disposed within the bore of the sealing gasket and each including a first portion, a second portion, and a groove, the first groove from a first insert of the pair of inserts and the second groove from a second insert of the pair of inserts cooperating to form a channel extending between the first portion of the insert and the second portion of the insert; and
an electrical coupling extending through the channel formed by the groove of the insert.
24. The digital valve controller of claim 23, further comprising a potting disposed adjacent the first portion of the insert and a potting disposed adjacent the second portion of the insert.
25. The digital valve controller of claim 24, wherein a potting disposed adjacent the first portion of the insert provides a hermetic seal rating and a potting disposed adjacent the second portion of the insert provides an explosion rating.
26. The digital valve controller of claim 24, wherein the potting is disposed within the bore of the sealing gasket and adjacent to the first portion of the insert.
27. The digital valve controller of claim 24, wherein a potting disposed adjacent the first portion of the insert is positioned between the first portion of the insert and the sealing gasket.
28. The digital valve controller of claim 23, wherein the sealing gasket comprises an external groove, further comprising a seal disposed within the external groove.
29. The digital valve controller of claim 28, wherein the bore of the terminal enclosure includes an inner surface, and wherein the seal sealingly engages the inner surface of the bore of the terminal enclosure.
30. The digital valve controller of claim 23, wherein the sealing gasket includes an internal step, and wherein each first portion of the insert includes a flange that engages the internal step of the sealing gasket.
31. The digital valve controller according to claim 30, wherein the internal step faces the main housing.
32. The digital valve controller of claim 23, wherein the electrical coupling is a Printed Wiring Board (PWB).
33. The digital valve controller of claim 23, wherein the passage between the first portion of the insert and the second portion of the insert has an oval cross-section.
34. The digital valve controller of claim 23, wherein the groove of each of the inserts includes rounded corners.
35. The digital valve controller of claim 34, wherein the electrical coupling comprises a rounded edge.
36. A sealing gasket assembly comprising:
a sealing gasket comprising a hole; and
a first insert and a second insert disposed within the bore of the sealing gasket, each of the first insert and the second insert having a groove, a first portion, and a second portion, the groove of the first insert cooperating with the groove of the second insert to form a channel extending between the first portion of the insert and the second portion of the insert.
37. The seal gasket assembly of claim 36, wherein the insert has a semi-circular cross-section and the groove has an oval cross-section.
38. The seal gasket assembly of claim 36, wherein the seal gasket comprises an outer groove, further comprising a seal disposed within the outer groove.
39. The seal gasket assembly of claim 36, wherein the seal gasket includes an internal step, and wherein each first portion of the insert includes a flange that engages the internal step of the seal gasket.
40. The sealing gasket assembly of claim 36, further comprising a hollow connector body having an aperture, the sealing gasket and the insert being disposed within the aperture of the hollow connector body.
41. The seal gasket assembly of claim 40, further comprising a pot disposed adjacent the first portion of the insert and a pot disposed adjacent the second portion of the insert.
42. The sealing gasket assembly of claim 41, further comprising an electrical coupling extending through the channel formed by the groove of the insert.
43. A gasket assembly for an explosive gas process control system sensor, the gasket assembly comprising:
a sealing gasket having a gasket body and a central opening through the gasket body;
a multi-layer insulated Printed Wiring Board (PWB) extending through the central opening; and
an overmolded rubber insert disposed between the PWB and the gasket body,
wherein the overmolded rubber insert seals the PWB against the gasket body to prevent gas transmission from one side of the gasket body to the other side of the gasket body.
44. The washer assembly of claim 43, wherein the central opening has a rectangular shape.
45. The washer assembly of claim 43, wherein the central opening has an oval shape.
46. The washer assembly of claim 43, wherein the washer body is disc-shaped.
47. The washer assembly of claim 46, wherein the washer body comprises an annular channel in an outer circumference.
48. The gasket assembly of claim 47, further comprising an O-ring disposed in said annular channel.
49. The washer assembly of claim 43, wherein the washer body has a thickness of between 0.25 inches and 1.0 inches.
50. The gasket assembly of claim 43, wherein the PWB has a thickness of between 0.02 inches and 0.1 inches.
51. The gasket assembly of claim 50, wherein the PWB has a width of between 0.25 inches and 1.0 inches.
52. The gasket assembly of claim 43, wherein the gasket body comprises a one-piece polyphenylene sulfide radial O-ring.
53. A connector assembly for an explosive gas process control system sensor, the connector assembly comprising:
a hollow connector body having an inner surface and an outer surface;
a sealing gasket having a gasket body and a central opening therethrough, the sealing gasket disposed in the hollow connector body;
a multi-layer insulated Printed Wiring Board (PWB) extending through the central opening; and
an overmolded rubber insert disposed between the PWB and the gasket body,
wherein the overmolded rubber insert seals the PWB against the gasket body to prevent gas transmission from one side of the gasket body to the other side of the gasket body.
54. The connector assembly of claim 53, wherein the central opening has a rectangular shape.
55. A connector assembly according to claim 53, wherein the central opening has an oval shape.
56. A connector assembly according to claim 53, wherein the washer body is disc-shaped.
57. The connector assembly of claim 56, wherein the washer body includes an annular channel in an outer circumference.
58. The connector assembly of claim 57, further comprising an O-ring disposed in the annular channel.
59. The connector assembly of claim 53, wherein the gasket body has a thickness of between 0.25 inches and 1.0 inches.
60. The connector assembly according to claim 53, wherein the PWB has a thickness of between 0.02 inches and 0.1 inches.
61. The connector assembly according to claim 60, wherein the PWB has a width of between 0.25 inches and 1.0 inches.
62. The connector assembly of claim 53, wherein the gasket body comprises a one-piece polyphenylene sulfide radial O-ring.
63. A duct between chambers of an explosive gas process control system, the duct comprising:
a first chamber and a second chamber connected by a wall having an opening; and
a connector assembly comprising a hollow connector body having an inner surface and an outer surface, a sealing gasket having a gasket body and a central opening therethrough, a multilayer insulated Printed Wiring Board (PWB) disposed in the hollow connector body, the PWB extending through the central opening, and an overmolded rubber insert disposed between the PWB and the gasket body,
wherein the overmolded rubber insert seals the PWB against the gasket body to prevent gas transmission from one side of the gasket body to the other side of the gasket body.
Technical Field
The present disclosure relates generally to digital valve controllers and, more particularly, to digital valve controllers and sealing gasket assemblies for digital valve controllers used in process control applications that use combustible gas as a feed medium.
Background
Instruments used in combustible and/or explosive gas process control applications typically require conductors to transmit information from one compartment or device to another. These conductors may pass through a compartment that may contain a combustible and/or explosive gas that is used as a feed medium. In some cases, the pressure of the feed medium is monitored and sent to a remote processor for analysis and/or process control monitoring.
Disclosure of Invention
According to a first example, a digital valve controller includes a main housing. The main housing includes an opening. The digital valve controller includes a terminal box. The terminal enclosure includes an inner surface that defines an aperture. The aperture of the terminal enclosure is aligned with the opening of the main housing. The digital valve controller includes a sealing gasket assembly. The seal gasket assembly is disposed within the bore and includes a body. The body has a bore. The seal gasket assembly includes a flange. The flange is coupled to the body and includes a channel, a face seal groove, and an outer seal groove. The seal gasket assembly includes a face seal. The face seal is disposed within the face seal groove. The face seal sealingly engages the main housing. The seal gasket assembly includes an outer seal. The outer seal is disposed within the outer seal groove. The outer seal sealingly engages the inner surface of the terminal enclosure. The seal gasket assembly includes an electrical coupling. The electrical coupling extends through the channel of the flange and the bore of the body.
According to a second example, a seal gasket assembly includes a body. The body has a bore. The seal gasket assembly includes a flange. The flange is coupled to the body and includes a channel, a face seal groove, and an outer seal groove. The seal gasket assembly includes a face seal. The face seal is disposed within the face seal groove. The seal gasket assembly includes an outer seal. The outer seal is disposed within the outer seal groove.
According to a third example, a seal gasket assembly includes a body. The body includes a first portion, a second portion, a flange, and defines an aperture. The flange is disposed between the first portion and the second portion. The bore includes a pair of longitudinally spaced grooves. The seal gasket assembly includes a pair of fasteners. The fasteners are received in respective ones of the grooves of the body. The seal gasket assembly includes a plug. The plug connector is arranged in the hole of the body and positioned between the fastening pieces. The plug comprises a channel. The seal gasket assembly includes an electrical coupling. The electrical coupling extends through the passage of the plug and the bore of the body.
According to a fourth example, a method of assembling a seal gasket assembly includes: an electrical coupling is positioned through the channel of the flange of the seal gasket assembly and the aperture of the body of the seal gasket assembly. The electrical coupling includes a first portion and a second portion. The first portion extends from the flange of the seal gasket assembly and the second portion extends from the second portion of the seal gasket assembly. The method comprises the following steps: coupling a connector to the first portion of the electrical coupling and the second portion of the electrical coupling after the electrical coupling is positioned through the channel of the seal gasket assembly and the aperture of the body of the seal gasket assembly.
Further in accordance with the foregoing first, second, third, and/or fourth examples, the apparatus and/or method may further comprise any one or more of:
according to one example, the flange includes a first portion and a second portion. The first portion includes a potting cup and a face seal groove. Also included is a potting disposed within the potting cup of the flange and a potting disposed within the bore of the body of the seal gasket assembly.
According to another example, the body of the seal gasket assembly includes an inner surface defining the bore. The inner surface tapers inwardly toward the flange.
According to another example, the potting cup includes rounded corners.
According to another example, the body of the seal gasket assembly is coupled to the flange of the seal gasket assembly via a press-fit connection.
According to another example, the flange comprises a collar. The collar of the flange receives the body of the seal gasket assembly to form the press-fit connection.
According to another example, the flange comprises an outer step. The body of the seal gasket assembly is received within the step to form the press-fit connection.
According to another example, the flange includes a first portion and a second portion. The first portion includes a face seal groove and the second portion includes a coupling groove. The body of the seal gasket assembly is received within the coupling groove.
According to another example, the body of the seal gasket assembly includes an inner surface defining the bore. A coupling is formed between the inner surface of the body and the flange.
According to another example, the body of the seal gasket assembly includes an inner surface having one or more inwardly extending protrusions. The inner surface of the body defines the aperture.
According to another example, the flange includes a first portion and a second portion. The first portion includes a potting cup and a face seal groove.
According to another example, the potting cup includes rounded corners.
According to another example, an electrical coupling is also included. The electrical coupling extends through the channel of the flange and the bore of the body.
According to another example, further comprising a potting disposed within the potting cup of the flange and a potting disposed within the bore of the body of the seal gasket assembly.
According to another example, the body of the seal gasket assembly includes an inner surface defining the bore. The inner surface includes an anti-blow-out feature.
According to another example, the plug comprises a first portion and a second portion. The first portion defines a potting cup.
According to another example, further comprising a potting disposed within the potting cup and a potting disposed within the bore of the body and adjacent the second portion of the socket.
According to another example, the plug comprises an external groove. A seal is also included. The seal is disposed within the outer groove.
According to another example, the flange and the body are coupled prior to positioning the electrical coupler through the channel of the flange of the seal gasket assembly and the aperture of the body of the seal gasket assembly.
According to a fifth example, a digital valve controller includes a main housing. The main housing includes an opening. The digital valve controller includes a terminal box. The terminal enclosure includes an aperture. The aperture of the terminal enclosure is aligned with the opening of the main housing. The digital valve controller includes a sealing gasket assembly. The seal gasket assembly is disposed within the bore and includes a seal gasket and a pair of inserts. The sealing gasket includes an aperture. The inserts are disposed within the bore of the sealing gasket and each insert includes a first portion, a second portion, and a groove. The grooves of the respective inserts cooperate to form a channel extending between the first portion of the insert and the second portion of the insert. The digital valve controller includes an electrical coupling. The electrical coupling extends through the channel formed by the recess of the insert.
According to a sixth example, a seal gasket assembly includes a seal gasket and a pair of inserts. The sealing gasket includes an aperture. The inserts are disposed within the apertures of the sealing gasket and each insert includes a first portion, a second portion, and a groove. The grooves of the respective inserts cooperate to form a channel extending between the first portion of the insert and the second portion of the insert.
Further in accordance with the foregoing fifth and/or sixth examples, the apparatus may further comprise any one or more of:
according to one example, further comprising a potting disposed adjacent the first portion of the insert and a potting disposed adjacent the second portion of the insert.
According to another example, a potting disposed adjacent the first portion of the insert provides a hermetic seal rating and a potting disposed adjacent the second portion of the insert provides an explosion proof rating.
According to another example, the potting is disposed within an aperture of the sealing gasket and adjacent to the first portion of the insert.
According to another example, a potting disposed adjacent the first portion of the insert is positioned between the first portion of the insert and the sealing gasket.
According to another example, the sealing gasket comprises an external groove. A seal is also included. The seal is disposed within the outer groove.
According to another example, the bore of the terminal enclosure includes an inner surface. The seal sealingly engages the inner surface of the bore of the terminal enclosure.
According to another example, the sealing gasket comprises an internal step. Each first portion of the insert includes a flange. The flange engages the inner step of the sealing gasket.
According to another example, the inner step faces the main housing.
According to another example, the electrical coupling is a Printed Wiring Board (PWB).
According to another example, the passage between the first portion of the insert and the second portion of the insert has an oval cross-section.
According to another example, the groove of each of the inserts has rounded corners.
According to another example, the electrical coupling has rounded edges.
According to another example, the insert has a semi-circular cross-section and the groove has an oval cross-section.
According to another example, a hollow connector body having a bore is also included. The sealing gasket and the insert are disposed within the bore of the hollow connector body.
According to another example, an electrical coupling is also included. The electrical coupling extends through a channel formed by a groove of the insert.
Drawings
FIG. 1 is a schematic diagram of an example digital valve controller assembled in accordance with the present disclosure.
Fig. 2 is a cross-sectional view of a sealing gasket assembly disposed within an aperture of a terminal closure of the digital valve controller of fig. 1.
Fig. 3 is a cross-sectional view of another embodiment of a sealing gasket assembly.
Fig. 4 is a perspective cross-sectional view of yet another embodiment of a sealing gasket assembly.
Fig. 5 is a cross-sectional view of yet another embodiment of a sealing gasket assembly.
Fig. 6 is a cross-sectional view of yet another embodiment of a sealing gasket assembly.
FIG. 7 is a schematic view of another embodiment of a digital valve controller assembled in accordance with the present disclosure.
Fig. 8 is an enlarged partial view of the sealing gasket assembly of fig. 7, wherein the seal is not disposed within the outer groove of the sealing gasket.
Fig. 9 is an isometric view of the sealing gasket assembly of fig. 7 including an electrical coupling.
Fig. 10 is a partially transparent side view of the sealing gasket assembly of fig. 7.
Fig. 11 is a perspective view of a connector assembly assembled in accordance with the present disclosure.
Fig. 12 is a top plan view of a printed wiring board connector assembly constructed in accordance with the teachings of the present disclosure.
Fig. 13 is a side plan view of the printed wiring board connector assembly of fig. 12.
Fig. 14 is a perspective view of the printed wiring board connector assembly of fig. 12.
Fig. 15 is a side plan view of a washer assembly of the printed wiring board connector assembly of fig. 12.
Fig. 16 is a top plan view of the gasket assembly of fig. 15.
Fig. 17 is an end view of the washer assembly of fig. 15.
FIG. 18 is an end view of the gasket assembly of FIG. 15 with the rubber overmolding removed.
Fig. 19 is a perspective view of a washer of the washer assembly of fig. 15.
Fig. 20 is a perspective view of the washer assembly of fig. 15.
Detailed Description
Although the following text discloses detailed descriptions of example methods, apparatus, and/or articles of manufacture, it should be understood that the legal scope of the title is defined by the words of the claims. Thus, the following detailed description is to be construed as exemplary only and does not describe every possible example because describing every possible example would be impractical, if not impossible. Many alternative examples may be implemented using either current technology or technology developed after the filing date of this patent. It is anticipated that such alternative examples will still fall within the scope of the claims.
Referring now to the drawings, FIG. 1 is a schematic diagram of an exemplary
The
The
The sealing
The
The
The
In the example shown, the
The
In the example shown, the
A
Fig. 2 illustrates a cross-sectional view of the sealing
In this example, the
Fig. 3 shows a cross-sectional view of another embodiment of a sealing
Fig. 4 shows a cross-sectional view of another embodiment of a sealing
In contrast to the sealing
The
Fig. 5 shows a cross-sectional view of another embodiment of a sealing gasket assembly 500. The seal gasket assembly 500 is similar to the
Fig. 6 shows a cross-sectional view of another embodiment of a sealing
The sealing
The
The
The
The
In the example shown, a plug (plug)638 is disposed within the
A potting 644 is disposed adjacent the
The
Turning now to fig. 7, fig. 7 is a schematic diagram of another embodiment of a
The
The
The sealing
The
In the example shown, the
The
The
In the example shown, the
The
Fig. 8 shows an enlarged partial view of the
Fig. 9 shows an isometric view of the sealing
Fig. 9 also shows the space/
Fig. 10 shows a partially transparent side view of the sealing
Fig. 11 illustrates an
In the example shown, the
The
The
Turning now to fig. 12-14, a
As described above, the
Turning now to fig. 15-20, an
As shown in fig. 17, in one embodiment, the
As shown in fig. 18, in another embodiment, the
In one embodiment, the
In the embodiment illustrated in fig. 15-20, the thickness tw of the
The disclosed connection assemblies may facilitate connection between one or more field devices or sensors and one or more controllers. In some embodiments, a field device may include one or more interfaces, such as a Fieldbus interface, a Profibus interface, a HART interface, a standard 4-20ma interface, and so forth. The field devices themselves may be smart field devices (such as HART, Profibus, or FOUNDATION) that include a processor and a memoryTMFieldbus field devices) or may be any other desired type of device. Some of these devices, such as Fieldbus field devices, may store and execute modules or sub-modules, such as function blocks, associated with the control strategy implemented in the controller. As described above, the field devices and controllers may be housed in a housing having one or more chambers. Such enclosures are common in process control environments, but are equally common in commercial, retail, residential, automotive, appliance, and the like applications. The controller may be coupled to one or more host or operator workstations. While the controllers and field devices may be located and distributed throughout the sometimes harsh plant environment, particularly those containing explosive gases, the operator workstations are typically located in control rooms or other less harsh environments readily accessible by controllers or maintenance personnel.
For example, the controller may be DeltaV sold by Emerson Process managementTMAnd a controller. The controller stores and executes a controller application that implements a control strategy using any number of different, independently executed control modules or blocks. Each control module may be made up of what are commonly referred to as function blocks, wherein each function block is a part or a subroutine of an overall control routine and incorporates itIts function blocks operate (via communications called links) to implement process control loops within a process plant. A function block, which may be an object in an object-oriented programming protocol, typically performs one of an input function (such as that associated with a transmitter, a sensor, or other process parameter measurement device), a control function (such as that associated with a control routine that performs PID, fuzzy logic, etc. control), or an output function (which controls the operation of some device (such as a valve) to perform some physical function within the process plant).
From the foregoing, it will be appreciated that the apparatus, methods and articles disclosed above relate to a multi-conductor feed-through (feed-thru) for an environment of combustible or explosive gases that may be used as a pressure medium. In some examples, the feedthrough is formed of two materials that are coupled together via an adhesive, a press-fit connection, or overmolding. If overmolding is used, this technique can be used to couple the flange of the sealing gasket assembly and the body of the sealing gasket assembly together.
In addition, although several examples have been disclosed herein, any feature from any example may be combined with or substituted for another feature from another example. Additionally, although several examples have been disclosed herein, changes may be made to the disclosed examples without departing from the scope of the claims.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:一种无焊接的无刷直线电机驱动的提升阀