CN2821351Y - Insulation flange for ship and bank connection - Google Patents
Insulation flange for ship and bank connection Download PDFInfo
- Publication number
- CN2821351Y CN2821351Y CN 200520074021 CN200520074021U CN2821351Y CN 2821351 Y CN2821351 Y CN 2821351Y CN 200520074021 CN200520074021 CN 200520074021 CN 200520074021 U CN200520074021 U CN 200520074021U CN 2821351 Y CN2821351 Y CN 2821351Y
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- flange plate
- flange
- ship
- insulating
- connection
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Abstract
The utility model discloses an insulating flange for ship and bank connection, which is applied to ship and bank petroleum pipelines of seaports and river port petroleum wharves. The utility model comprises a left flange disc and a right flange disc which are insulatedly connected by screw bolts, wherein an insulated sealing gasket is arranged between the left flange disc and the right flange disc; the insulating left flange disc and the right flange disc are connected by at least on resistor in a lap connection mode; sub-conductor material feeding ring is inlaid between the left flange disc and the right flange disc, and the outside of the left flange disc and the right flange disc are wrapped with an outer protective sleeve. The insulating flange has the functions that the static on the connected point can be reliably connected to the ground, and the flow of the stray current on both sides of the insulating flange can be effectively obstructed, and has the advantages of safe operation and stable functional effect.
Description
Technical field
The utility model relates to the oil transportation facility of harbour (comprising estuary harbour), river, river port harbour, the specifically improvement of ship-to-shore pipe line road adpting flange structure.
Background technique
The ship bank of oil product harbour refuel or the emptying operation in, owing to reasons such as the flowing of oil product loading and unloading, filtration and profit mix, all will produce a large amount of static charges inevitably, and between ship bank oil transportation facility, cause the static discharge accident easily on the one hand; On the other hand owing to the multiple reasons such as ground connection, high pressure electric leakage, thunder and lightning and electrochemical corrosion of electrical equipment facility on the bank, can making on the bank again, oil transport pipeline accumulates to the stray electrical current that has higher discharging energy than static charge, tangible potential difference between the ship bank, occurs, very easily discharge spark takes place because of flowing of stray electrical current.Therefore, both there had been electrostatic hazard between the ship bank facility of oil product harbour, more have stray electrical current hidden danger, have bigger discharge and fire danger.
For preventing the generation of discharge accident, traditional way is to adopt special-purpose "Jumper" cable to make equipotential between the ship bank to connect and ground connection, but this preventive measure can only reduce electrostatic hazard, and can not block and avoid the discharge disaster that flows and therefore cause of stray electrical current; Particularly when carrying out the cable crossover operation, because the existence of stray electrical current then certainly leads to the contact discharge spark, explosion caused thus and fire accident.Thereby people are still seeking a kind ofly can make the static reliable ground always, can block stray electrical current flows between the ship bank product or device again.NBS " basic demand of oil product dock safety technology " though mention insulated flange and resistance index thereof (GB16994-1997), yet inventor up to the present of the present utility model still finds no the insulated flange technical products that is suitable for practicality and reliable performance.
China utility model patent ZL02260941.5 discloses a kind of " antistatic insulating flanged joint " that is used for the ship-to-shore pipe line road, this insulated flange joint, be actually the sealing gasket between the general flange plate is replaced with the pad of being made by inferior conductor material, in the hope of reaching the double effects of sealing and antistatic.Because the sealing gasket in this technological scheme should have good oil resistant sealability, guarantee under the bolton condition of contact, to have stable expection resistance requirement again, thereby existing the manufacturing process difficulty big, reliability is difficult for the deficiency of assurance, has directly limited the practical application of this technical products.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of can guarantee the static reliable ground, can effectively block the insulating flange for connection of ship and shore pipelines of ship bank stray electrical current again.
Another technical problem to be solved in the utility model provides a kind of insulating flange for connection of ship and shore pipelines with good airtight performance and high reliability.
In order to solve the problems of the technologies described above, insulating flange for connection of ship and shore pipelines of the present utility model, comprise the left flange plate and the right flange plate that connect by the bolt insulation, between left flange plate and right flange plate, be lined with the insulated enclosure pad, between the left flange plate of described insulation and right flange plate, be overlapped with a resistance at least.
After adopting said structure, owing between the left flange plate of mutually insulated and right flange plate, be overlapped with fixed resistance, thereby guaranteed the stable of resistance value between the flange plate end face, this resistance value can be cut off flowing of stray electrical current between the oil transport pipeline of adpting flange both sides effectively, the discharge accident of avoiding stray electrical current to cause, provide ground connection leakage path and continuity for both sides oil transport pipeline static charge again, stop the generation of electrostatic accident, have the dual functions of reliable electrostatic grounding and partition stray electrical current.Also because the sealed insulation performance and the electric conductivity of this structure depend on insulated enclosure pad and the fixed resistance that it is corresponding respectively, can not form attending to one thing and lose sight of another between the two, technology controlling and process and using effect are reliable more, stable, it can not only realize " oil jetty safety technique basic demand " corresponding techniques safe performance indexes such as (GB16994-1997) easily and reliably, and effect stability, use safer.
A preferred implementation of the present utility model is to be inlaid with the packing ring of being made by inferior conductor material at the place, flange slit of described left flange plate and right flange plate.This packing ring has conducting static equally, cuts off the effect of stray electrical current, thereby has further guaranteed the reliability of insulated flange electrical properties.
Another preferred implementation of the present utility model is that the flange outer sides at described left flange plate and right flange plate is coated with oversheath.This structure has improved the seal of insulated flange, has effectively avoided the change of foreign materials such as rain and impurity, dust and harmful corrosion thing to the adpting flange electrical properties.
Another preferred implementation of the utility model is, the resistance fitting seat is housed on described left flange plate, and this resistance fitting seat is provided with the through hole that holds resistance; Resistance front end in this through hole contacts with right flange plate conducting; Its rear end by spring-loaded on adjusting screw; This adjusting screw is rotatably connected on the resistance fitting seat.Adopt resistance fitting seat structure, be convenient to the assembling and the repair and replacement of fixed resistance; Adopt adjusting screw and spring structure, guaranteed the good contact of resistance and stable conductivity, action effect is better.
Description of drawings
Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model.
Fig. 1 is the structure sectional view of a kind of embodiment of the utility model insulating flange for connection of ship and shore pipelines;
Fig. 2 is the structure enlarged view of the resistance fit in the structure shown in Figure 1;
Fig. 3 is the structure sectional view of the another kind of embodiment of the utility model insulating flange for connection of ship and shore pipelines;
Fig. 4 is a kind of flange plate structure figure in the utility model insulating flange for connection of ship and shore pipelines.
Embodiment
In Fig. 1, insulating flange for connection of ship and shore pipelines shown in Figure 2, be lined with insulated enclosure pad 8 between the left flange plate 6 of circular discoid structure and the right flange plate 9, this insulated enclosure pad 8 adopts the withstand voltage asbestos seal pad of high strength oil resistants, and its resistance value is not less than 109 Ω.On the card of left and right flanges dish, be evenly distributed with some bolts hole, all wear in each bolt hole, and left flange plate 6 is connected with right flange plate 9 lockings by nut collar 3 with stud bolt 4 (also single ended bolt); On this bolt 4, be with bolt insulating bush 7, and be lined with insulation spacer 5 between these bolt 4 one side nut collars 3 and the flange plate, thereby it is fastening that bolt 4 had both been realized the connection of left and right sides flange plate, make two flange plate keep state of insulation again.Be fixedly connected with left side short tube 2 and right side short tube 10 respectively in the outside of left flange plate 6 and right flange plate 9, left and right sides short tube 2,10 adopts the aperture dimension of nested structure and short tube internal diameter and flange plate consistent with the connection of left and right flanges dish 6,9, the internal diameter of insulated enclosure pad 8 also equates with the internal orifice dimension of flange plate simultaneously, this adpting flange with the structure of seamlessly transitting, the generation of vortex flow when both having avoided oil transportation in the oil transport pipeline effectively, prevented that again the flange electric conductivity that the foreign material precipitation is caused from changing, and makes it more safe and reliable.Outer end at left side short tube 2 also is fixedly connected with left end flange plate 1, and the outer end of right side short tube 10 also is fixedly connected with right-hand member flange plate 11.
Between the left flange plate 6 of mutually insulated and right flange plate 9, be overlapped with 2 resistance 14.The assembly structure of every resistance 14 is, tightened resistance fitting seat 16 in left flange plate 6 corresponding mounting holes, for guaranteeing the reliable insulation of this resistance fitting seat 16 and right flange plate 9, is with insulation spacer 13 at the front end of resistance fitting seat 16.In the core position of this resistance fitting seat 16 along center line, be provided with the through hole that holds resistance 14, the resistance 14 that adjusting screw 17, pressure spring 15 is installed from left to right successively and has the fixed resistance value in this through hole, resistance 14 can slide in the through hole of resistance fitting seat 16 vertically; With resistance 14 corresponding right flange plate 9 relevant positions on be lined with the metallic shim 12 that the red copper material is made, to improve the electric conductivity of resistance 14 and right flange plate 9.In this embodiment, the resistance value of two resistance that overlap between the flange plate of the left and right sides is 500K Ω, then the total resistance value between two flanges is 250K Ω, certainly this resistance value determines and should design according to actual conditions, but the total resistance value between flange plate should remain between 25K Ω～2500K Ω, to satisfy corresponding technical specification of security.
Shown in Figure 3 is the another kind of concrete structure of the utility model insulating flange for connection of ship and shore pipelines, except that being filled with packing ring 21 that inferior conductor material makes and being coated with the oversheath 18 at two flange plate flanges between two flange plate flanges, all the other structures are then identical with above-mentioned enforcement in this embodiment.The resistance value of described packing ring 21 between 106～108 Ω, the airtight coating that coincide mutually of oversheath 18 and two flange plate outward flanges, the material of its oversheath 18 can adopt materials such as common insulation rubber or insulating resin.
Fig. 4 is the end-face structure figure of left flange plate or right flange plate, evenly is furnished with 8 bolts hole 19 on the card of this flange plate, also is provided with two resistor block mounting holes 20 on the circumference identical with bolt hole 19.
Above-mentionedly only enumerated two preferred implementations of the present utility model, but the utility model is not limited thereto, also can does corresponding the improvement and conversion, as not adopting between flange plate and the short tube, and adopt the cast inblock structure as above-mentioned branch body structure; The quantity of resistance also is not limited to 2, and should design definite as the case may be; Even can not establish fixed resistance, only adopt inferior conductor packing ring, to guarantee electrostatic grounding and blocking-up stray electrical current.These conversion and improvement all drop in the protection domain of the present utility model and so on.
Claims (10)
1, a kind of insulating flange for connection of ship and shore pipelines, comprise the left flange plate (6) and the right flange plate (9) that connect by bolt (4) insulation, between left flange plate (6) and right flange plate (9), be lined with insulated enclosure pad (8), it is characterized in that: between the left flange plate (6) of described insulation and right flange plate (9), be overlapped with a resistance (14) at least.
2, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: the place, flange slit at described left flange plate (6) and right flange plate (9) is inlaid with the packing ring of being made by inferior conductor material (21).
3, insulating flange for connection of ship and shore pipelines according to claim 1 and 2 is characterized in that: the flange outer sides at described left flange plate (6) and right flange plate (9) is coated with oversheath (18).
4, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: be with bolt insulating bush (7) on described bolt (4), and also be lined with insulation spacer (5) between this bolt (4) and the flange plate.
5, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: be fixedly connected with left side short tube (2) on the described left flange plate (6), the fixedly connected left end flange plate in the outer end of this left side short tube (2) (1); Be fixedly connected with right side short tube (10) on the described right flange plate (9), the outer end of this right side short tube (10) is fixedly connected with right-hand member flange plate (11).
6, insulating flange for connection of ship and shore pipelines according to claim 5 is characterized in that: the internal diameter of described left and right sides short tube (2,10) is consistent with described left flange plate (6) and right flange plate (9) internal orifice dimension.
7, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: resistance fitting seat (16) is housed on described left flange plate (6), and this resistance fitting seat (16) is provided with the through hole that holds resistance (14); Resistance (14) front end in this through hole contacts with right flange plate (9) conducting; Its rear end is supported on the adjusting screw (17) by spring (15); This adjusting screw (17) is rotatably connected on the resistance fitting seat (16).
8, insulating flange for connection of ship and shore pipelines according to claim 7 is characterized in that: described resistance fitting seat (16) front end is with insulation spacer (13), and the front end of described resistance (14) is conducted with right flange plate (9) by metallic shim (12) and contacts.
9, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: be overlapped with two or three resistance (14) between described left flange plate (6) and right flange plate (9).
10, insulating flange for connection of ship and shore pipelines according to claim 1 is characterized in that: described insulated enclosure pad (8) internal orifice dimension is consistent with left and right flanges dish (6,9) internal orifice dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074021 CN2821351Y (en) | 2005-07-29 | 2005-07-29 | Insulation flange for ship and bank connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074021 CN2821351Y (en) | 2005-07-29 | 2005-07-29 | Insulation flange for ship and bank connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821351Y true CN2821351Y (en) | 2006-09-27 |
Family
ID=37017906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520074021 Expired - Lifetime CN2821351Y (en) | 2005-07-29 | 2005-07-29 | Insulation flange for ship and bank connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821351Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609222A (en) * | 2020-05-28 | 2020-09-01 | 高伟 | Pipeline structure for water supply and drainage of hospital |
-
2005
- 2005-07-29 CN CN 200520074021 patent/CN2821351Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609222A (en) * | 2020-05-28 | 2020-09-01 | 高伟 | Pipeline structure for water supply and drainage of hospital |
| CN111609222B (en) * | 2020-05-28 | 2021-12-21 | 高伟 | Pipeline structure for water supply and drainage of hospital |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150729 Granted publication date: 20060927 |
|
| EXPY | Termination of patent right or utility model |