CN112344020A - Digital valve controller and sealing gasket assembly for use with digital valve controller - Google Patents

Digital valve controller and sealing gasket assembly for use with digital valve controller Download PDF

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Publication number
CN112344020A
CN112344020A CN202010789397.2A CN202010789397A CN112344020A CN 112344020 A CN112344020 A CN 112344020A CN 202010789397 A CN202010789397 A CN 202010789397A CN 112344020 A CN112344020 A CN 112344020A
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CN
China
Prior art keywords
insert
valve controller
digital valve
sealing gasket
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010789397.2A
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Chinese (zh)
Inventor
R·F·赫德
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Fisher Controls International LLC
Original Assignee
Fisher Controls International LLC
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Filing date
Publication date
Application filed by Fisher Controls International LLC filed Critical Fisher Controls International LLC
Publication of CN112344020A publication Critical patent/CN112344020A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/067—Split packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/064—Hermetically-sealed casings sealed by potting, e.g. waterproof resin poured in a rigid casing

Abstract

A digital valve controller and a sealing gasket assembly for use with the digital valve controller. An example digital valve controller includes a main housing having an opening. The digital valve controller includes a junction box having an aperture. The aperture of the terminal block is aligned with the opening of the main housing. The digital valve controller includes a seal gasket assembly disposed within the bore and includes a seal gasket and a pair of inserts. The sealing gasket includes an aperture. 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 corresponding 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 that extends through a channel formed by a groove of the insert.

Description

Digital valve controller and sealing gasket assembly for use with digital valve controller
Technical Field
This patent relates generally to digital valve controllers and, more particularly, to digital valve controllers and sealing gasket assemblies for use with digital valve controllers used in process control applications that use combustible gas as a supply medium.
Background
Instruments used in combustible 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 gas, which serves as a supply medium. In some cases, the pressure of the supply medium is monitored and transmitted 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 having an opening. The digital valve controller includes a terminal block including an aperture aligned with the opening of the main housing. The digital valve controller includes a seal gasket assembly disposed within the bore and includes a seal gasket and a pair of inserts. The sealing gasket includes an aperture. 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 corresponding 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 that extends through a channel formed by a groove of the insert.
According to a second example, a seal gasket assembly includes a seal gasket and a pair of inserts. The sealing gasket includes an aperture. 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 corresponding 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 first and/or second examples, an apparatus may further comprise any one or more of:
according to one example, a potting disposed adjacent the first portion of the insert and a potting disposed adjacent the second portion of the insert are also included.
According to another example, the potting disposed adjacent the first portion of the insert provides a hermetic seal rating and the potting disposed adjacent the second portion of the insert provides an explosion proof rating.
According to another example, the potting is disposed within the bore of the sealing gasket and adjacent 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. A 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 an inner surface of the bore of the terminal closure.
According to another example, the sealing gasket comprises an internal step. Each first portion of the insert includes a flange. The flange engages an internal 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 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 the recess of the insert.
Drawings
FIG. 1 is a schematic illustration of an exemplary digital valve controller assembled in accordance with a first disclosed example of the present invention.
Fig. 2 illustrates a close-up view of the seal gasket assembly of fig. 1, wherein the seal is not disposed within the outer groove of the seal gasket.
Fig. 3 illustrates an isometric view of the sealing gasket assembly of fig. 1 including an electrical coupling extending through the insert.
Fig. 4 illustrates a partially transparent side view of the sealing gasket assembly of fig. 1.
Fig. 5 illustrates an exemplary connector assembly assembled in accordance with a second disclosed example of the present invention.
Detailed Description
Although the following text discloses a detailed description 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 set forth at the outset of this patent. 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 illustration of an exemplary digital valve controller 100 assembled in accordance with a first disclosed example of the invention. According to the disclosed example, a digital valve controller 100 is attached to an actuator 101 and is used to control the position of a control valve 102.
Digital valve controller 100 includes a main housing 103, a junction box 104, and a sealing gasket assembly 106. The sealing gasket assembly 106 serves as a conduit between the main housing 103 and the junction box 104 and serves to allow communication between a component 108 associated with the main housing 103 and a component 110 associated with the junction box 104 via an electrical coupling 107. The component 108 of the main housing 103 may be a sensor and the component 110 of the junction box 104 may be a sensor. However, the components 108, 110 may differ depending on the application. In the example shown, the component 108 is disposed within the main housing 103, and the component 110 is disposed within the junction box 104. Alternatively, one or more of the components 108, 110 may be disposed outside the main housing 103 or the junction box 104.
The main housing 103 includes an opening 112 and defines a chamber 114. The chamber 114 is adapted to receive a supply medium 115, such as compressed air or natural gas.
The junction box 104 includes an aperture 118, the aperture 118 aligned with the opening 112 of the main housing 103 and coupled relative to the opening 112 of the main housing 103 via a fastener 119. The junction box 104 also defines a chamber 116, which chamber 116 receives the component 110 in the example shown. The chamber 116 may also house wiring 120 coupled to the component 110.
The sealing gasket assembly 106 is disposed in the aperture 118 of the junction box 104. In the example shown, the sealing gasket assembly 106 includes a sealing gasket 122 and a pair of inserts 124, 126. The sealing gasket 122 or one of the inserts 124, 126 may be made of polyphenylene sulfide
Figure BDA0002623205550000041
R-4-200 NA. However, other materials may be used.
The sealing gasket 122 includes an outer groove 128, and a seal 130 is disposed in the outer groove 128. The seal 130 may be an O-ring. The seal 130 is adapted to sealingly engage an inner surface 132 of the terminal box 104 that defines the aperture 118. The sealing gasket 122 also includes an aperture 134, and the inserts 124, 126 are disposed in the aperture 134. The sealing gasket 122 may include an internal step 135 facing the main housing 103. The diameter of the hole 134 may be approximately 0.838 inches. However, the bore 134 may have any other diameter.
In the example shown, the inserts 124, 126 are substantially similar or identical, and each insert includes a first portion 136, a second portion 138, and a groove 140. The first portion 136 includes a flange 137 that engages the internal step 135 of the sealing gasket 122. The sealing gasket assembly 106 is positioned to allow pressure within the chamber 114 of the main housing 103 to urge the flanges 137 of the inserts 124, 126 into engagement with the internal step 135 of the sealing gasket 122. The grooves 140 of the inserts 124, 126 face and cooperate with one another to form a through passage 142. The channel 142 extends between the first portion 136 of the inserts 124, 126 and the second portion 138 of the inserts 124, 126.
The electrical coupling 107 extends through a channel 142 formed by the grooves 140 of the inserts 124, 126. The interaction between the interposers 124, 126 and the electrical coupling 107 may support the electrical coupling 107 within the channel 142. Electrical coupling 107 may be a Printed Wiring Board (PWB). The electrical coupling 107 may include an ISOLA 370 HR. Electrical coupling 107 may have a thickness 143 of about 0.062 inches and may have a width of about 0.50 inches. However, the electrical coupling 107 may be formed in other dimensions. In the example shown, the connector 144 is carried near an end of the electrical coupling 107. In an example, wiring of wiring 120 can be attached to connectors 144 of electrical coupling 107 to facilitate communication with component 110.
A potting 145 is disposed adjacent the first portion 136 of the inserts 124, 126 and a potting 146 is disposed adjacent the second portion 138 of the inserts 124, 126. The potting 145 and/or 146 may hermetically seal the sealing gasket assembly 106.
In the example shown, the potting 145 adjacent the first portion 136 of the inserts 124, 126 is disposed within the aperture 134 of the sealing gasket 122. The potting 145 adjacent to the first portion 136 of the inserts 124, 126 may provide the sealing gasket assembly 106 or, more specifically, the main housing 103 of the digital valve controller 100 with an air-tight rating and may prevent the supply medium 115 from passing from the main housing 103 to the junction box 104 via the aperture 118 of the junction box 104. By way of example, the potting 145 can make the sealing gasket assembly 106 bubble free at room temperature, wherein the chamber 114 of the main housing 103 is pressurized to about 300 pounds per square inch gauge (psig). The potting 145 may include the Supreme 10HTFL from Master Bond (U.S.A.). However, any other potting may be used.
The potting 146 adjacent to the second portion 138 of the inserts 124, 126 may provide an explosion proof rating for the sealing gasket assembly 106 and, in particular, the junction box 104 of the digital valve controller 100. The potting 146 may include hadmann (Hardman) 42174/52174. However, any other potting may be used. Additionally, instead of using potting 145, 146 or glue, an over-molding process may be used to seal the sealing gasket assembly 106.
Fig. 2 illustrates a close-up view of the seal gasket assembly 106 of fig. 1, wherein the seal 130 is not disposed within the outer groove 128 of the seal gasket 122. In the example shown, the sealing gasket 122 has a circular cross-section, and the inserts 124, 126 have a semi-circular cross-section. In addition, the groove 140 has rounded corners 148. The use of rounded corners 148 rather than sharp corners may, for example, reduce the likelihood of the potting 145, 146 separating and/or cracking when the sealing gasket assembly 106 is exposed to one or more thermal cycles.
Fig. 3 illustrates an isometric view of the sealing gasket assembly 106 of fig. 1, the sealing gasket assembly 106 including an electrical coupling 107 extending through the inserts 124, 126. In the example shown, the mating recess 140 has an oval cross-section and the edges 150 of the electrical coupling 107 are rounded. The rounded edges 150 of the electrical coupling 107 can correspond to the rounded corners 148 of the inserts 124, 126. However, the mating groove 140 may alternatively have a different cross-section. For example, the fitting groove 140 may form a rectangular cross section. In such an example, the corners of the groove 140 may form an approximately 90 ° angle.
Fig. 3 also illustrates a space/potting cup 152 defined between the first portion 136 of the inserts 124, 126 and an inner edge 154 of the sealing gasket 122. A space 152 is formed by the aperture 134 and is adapted to receive the potting 145. The depth 155 of the space 152 (the depth being most clearly shown in fig. 4) may be about 0.060 inches. However, the depth 155 of the space 152 may be any other distance.
Fig. 4 illustrates a partially transparent side view of the sealing gasket assembly 106 of fig. 1. In the example shown, the potting 145 adjacent to the first portion 136 of the inserts 124, 126 is positioned between the first portion 136 of the insert 124 and the sealing gasket 122. Specifically, an outer gap 156 is provided between an outer surface 158 of the inserts 124, 126 and an inner surface 160 of the sealing gasket 122. The outer gap 156 may be about 0.005 inches. However, the outer gap 156 may be a different distance. Additionally, in the example shown, an internal gap 162 is provided between inner surfaces 164 of the inserts 124, 126. The inner gap 162 may be about 0.010 inches. However, the inner gap 162 may be a different distance.
Fig. 5 illustrates an exemplary connector assembly 200 assembled in accordance with a second disclosed example of the present invention. The connector assembly 200 may be positioned within the aperture 118 of the junction box 104. In such an example, the aperture 118 of the junction box 104 may be adapted to have a cross-section corresponding to the cross-section of the connector assembly 200.
In the example shown, the connector assembly 200 includes a hollow connector body 202, the hollow connector body 202 including an outer surface 204 and a bore 206. The sealing gasket assembly 106 of fig. 1 may be disposed within the bore 205 of the connector body 202. Potting 145, 146 is received within aperture 206 of connector body 202.
The connector body 202 includes a flange 208 and an outer step 210. The flange 208 of the connector body 202 may be adapted to be received within a corresponding portion of the aperture 118 of the junction box 104. The first portion 136 of the inserts 124, 126 may face the flange 208 of the connector body 202. The outer step 210 is defined between a central portion 212 of the connector body 202 and an end portion 214 of the connector body 202.
A seal 216 is disposed around the end portion 214 of the connector body 202 adjacent the outer step 210. The seal 216 may be adapted to sealingly engage a portion of the aperture 118 of the junction box 104.
In light of the foregoing, it will be appreciated that the apparatus, methods, and articles disclosed above relate to a multi-conductive feed-through (feed-thru) that is usable with combustible gases (e.g., natural gas) used as the pressure medium. The disclosed multi-conductive feedthroughs are adapted to prevent pressure medium from passing from one compartment to another or into the electrical conduit system and/or the control room.
Furthermore, although several examples have been disclosed herein, any feature from any example may be combined with or substituted for other features from other examples. Additionally, although several examples have been disclosed herein, changes may be made to the disclosed examples without departing from the scope of the claims.

Claims (20)

1. A digital valve controller comprising:
a main housing having an opening;
a junction box having a hole 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, wherein a first groove from a first insert of the pair of inserts and a second groove from a second insert of the pair of inserts cooperate to form a channel extending between the first portion of the inserts and the second portion of the inserts; and
an electrical coupling extending through the channel formed by the groove of the insert.
2. The digital valve controller of claim 1, further comprising a potting disposed adjacent the first portion of the insert and a potting disposed adjacent the second portion of the insert.
3. The digital valve controller of claim 2, wherein the potting disposed adjacent the first portion of the insert provides a hermetic seal rating and the potting disposed adjacent the second portion of the insert provides an explosion proof rating.
4. The digital valve controller of claim 2, wherein the potting is disposed within the bore of the sealing gasket adjacent the first portion of the insert.
5. The digital valve controller of claim 2, wherein the potting disposed adjacent the first portion of the insert is positioned between the first portion of the insert and the sealing gasket.
6. The digital valve controller of claim 1, wherein the sealing gasket comprises an external groove, further comprising a seal disposed within the external groove.
7. The digital valve controller of claim 6, wherein the bore of the junction box includes an inner surface, and wherein the seal is in sealing engagement with the inner surface of the bore of the junction box.
8. The digital valve controller of claim 1, 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.
9. The digital valve controller according to claim 8, wherein the internal step faces the main housing.
10. The digital valve controller of claim 1, wherein the electrical coupling is a Printed Wiring Board (PWB).
11. The digital valve controller of claim 1, wherein the passage between the first portion of the insert and the second portion of the insert has an oval cross-section.
12. The digital valve controller of claim 1, wherein the groove of each of the inserts includes rounded corners.
13. The digital valve controller of claim 12, wherein the electrical coupling comprises a rounded edge.
14. 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, wherein the groove of the first insert cooperates 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.
15. The seal gasket assembly of claim 14, wherein the insert has a semi-circular cross-section and the groove has an oval cross-section.
16. The seal gasket assembly of claim 14, wherein the seal gasket includes an outer groove, further comprising a seal disposed within the outer groove.
17. The seal gasket assembly of claim 14, 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.
18. The seal gasket assembly of claim 14, further comprising a hollow connector body having an aperture, the seal gasket and the insert being disposed within the aperture of the hollow connector body.
19. The seal gasket assembly of claim 18, further comprising a pot disposed adjacent the first portion of the insert and a pot disposed adjacent the second portion of the insert.
20. The sealing gasket assembly of claim 19, further comprising an electrical coupler extending through the channel formed by the groove of the insert.
CN202010789397.2A 2019-08-07 2020-08-07 Digital valve controller and sealing gasket assembly for use with digital valve controller Pending CN112344020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962884120P 2019-08-07 2019-08-07
US62/884,120 2019-08-07

Publications (1)

Publication Number Publication Date
CN112344020A true CN112344020A (en) 2021-02-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010789397.2A Pending CN112344020A (en) 2019-08-07 2020-08-07 Digital valve controller and sealing gasket assembly for use with digital valve controller

Country Status (1)

Country Link
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