CN2717001Y - Gravity assistance type air pressure relay - Google Patents
Gravity assistance type air pressure relay Download PDFInfo
- Publication number
- CN2717001Y CN2717001Y CN 200420007357 CN200420007357U CN2717001Y CN 2717001 Y CN2717001 Y CN 2717001Y CN 200420007357 CN200420007357 CN 200420007357 CN 200420007357 U CN200420007357 U CN 200420007357U CN 2717001 Y CN2717001 Y CN 2717001Y
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- air pressure
- pressure relay
- type air
- convex surface
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a gravity-assistance-type air pressure relay. The body of the air pressure relay comprises a short column-shaped hollow casing, an axial axle sleeve arranged at the center in the casing, and a rectangular casing body connected with one end of the axle sleeve. The casing, the axle sleeve and the rectangular casing body are integrated into one body by a rib with the circular and cross structure. The center of the axle sleeve is provided with a circular hole which is communicated with the rectangular casing body, and the circular hole can aim at the movable contact head of a fine motion switch matched with the rectangular casing body and can be fixed by adding a cover. A valve is provided with the umbellate form structure which comprises a core shaft and a circular-arc-shaped convex surface, and the core shaft and the circular-arc-shaped convex surface are matched movably and respectively with the center circular hole of the axle sleeve and the casing and are limited by a check ring. The gravity-assistance-type air pressure relay of the utility model has the advantages of simple structure, light weight, reliable performance and long service life, can be arranged at the inner side and outer side of a wind channel, and can be suitable simultaneously for the work method which can be in horizontal, inclined or vertical status with wind direction.
Description
Technical field
The utility model relates to a kind of air pressure relay; Be specifically in the power electronic equipment of power station generator excitation system, metallurgy, papermaking, cement and rubber industry, a kind of wind pressure sensor of using when the blower fan in the monitoring forced air cooling heat abstractor etc. breaks down.
Background technology
In the generating of electric power with send in the power transformation electrons transmitted equipment, need force to carry out wind-cooling heat dissipating for device or device with axial flow blower or centrifugal blower etc., so that the normal operation of the equipment of assurance.When the axial flow blower of forced air cooling heat abstractor or centrifugal blower break down, need detect fault-signal and report to the police, so air pressure relay is exactly the mechanical sensor that a kind of pressure with wind changes the signal of telecommunication into.In the existing air pressure relay, what adopt the variation of detection blast is the combining structure of rubber membrane and sensitive switch, its level is installed in outside the wall of air channel (wind collecting unit), when the axial flow blower of forced air cooling heat abstractor or centrifugal blower break down, the blast of rubber membrane both sides is atmospheric pressure, and sensitive switch disconnects; When fan operation, the blast in the rubber membrane outside is an atmospheric pressure, and rubber membrane inboard (being in the air channel) forms negative pressure, and sensitive switch is connected.Obviously, rubber membrane is easily aging, and sensitivity is low, and poor reliability so useful life is low, and can only be that horizontal direction is installed.
The utility model content
The utility model provides a kind of simple in structure in order to overcome the defective of prior art, reliability height, and the gravity assist type air pressure relay of long service life.
The utility model gravity assist type air pressure relay comprises main body and sensitive switch; Wherein main body comprises the short cylindrical shape hollow casing, is positioned at the axial axle sleeve that settle at the shell center, and the rectangle housing that is connected with axle sleeve one end; Shell, axle sleeve and rectangle housing are connected as a single entity with the rib of ring-type and criss-cross construction; The axle sleeve center is provided with circular hole and is communicated with the rectangle housing, and the movable contact of the equipped sensitive switch of aligning and rectangle housing, and adds a cover fixing; Flap valve is the umbrella-shaped structure that mandrel and circular arc convex surface are formed, mandrel and circular arc convex surface respectively with the center hole and shell active mounting of axle sleeve after, spacing with back-up ring.
The utility model gravity assist type air pressure relay, wherein go back suit nonwoven fabrics and snap ring on axle sleeve, snap ring is to add some connection ribs between two donuts to make formation in aggregates, and equipped with intracardiac ring and axle sleeve, and concentric outer shroud and shell are equipped, and are fixed nonwoven fabrics.
The utility model gravity assist type air pressure relay, the outer cover of wherein transparent engineering plastics injection mo(u)lding covers the circular arc convex surface of flap valve, and with shell between be connected with tongue and groove; At least be provided with the pore of 3 projectioies that communicate with inner chamber on the anchor ring of outer cover, and between the inner surface of outer cover and the circular arc convex surface spacing arranged.
The utility model gravity assist type air pressure relay, wherein the centre of the circular arc convex surface of flap valve is provided with the blind hole that is used for fixing counterweight.
The utility model gravity assist type air pressure relay, wherein the excircle of shell is provided with the bulge loop that band installs and fixes the hole.
The utility model gravity assist type air pressure relay, wherein main body, snap ring, flap valve and lid engineering plastics injection mo(u)lding.
The utility model gravity assist type air pressure relay is simple in structure, in light weight, can be installed in inside and outside the air channel, be applicable to simultaneously with wind-force direction level, inclination or plumbness under working method, and sensitive reliable, plurality of advantages such as long service life.
Description of drawings
Fig. 1 is the utility model gravity assist type air pressure relay structural principle decomposing schematic representation;
Fig. 2 tilts or horizontal operation mode user mode schematic diagram for the utility model;
Fig. 3 is the vertical working method user mode of a utility model schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described below.
Embodiment
As seen from Figure 1, the utility model umbellate form flap valve, sensitive switch 5, back-up ring 9, lid 6, outer cover 12 and snap ring 11 and nonwoven fabrics 10 of comprising main body 1, forming by mandrel 7 and circular arc convex surface 8.Main body 1 comprises short cylindrical shape hollow casing 2, is positioned at the axial axle sleeve 3 that settle at shell 2 centers, and the rectangle housing 4 that is connected with axle sleeve 3 one ends; The rib of shell 2, axle sleeve 3 and rectangle housing 4 usefulness ring-types and criss-cross construction is connected as a single entity, and uses the engineering plastics injection mo(u)lding.Axle sleeve 3 centers are provided with circular hole and are communicated with rectangle housing 4, and the movable contact of the equipped sensitive switch 5 of aligning and rectangle housing 4, and add a cover 6 and be fixed; Flap valve is the umbrella-shaped structure that mandrel 7 and circular arc convex surface 8 are formed, mandrel 7 and circular arc convex surface 8 respectively with the center hole and shell 2 active mountings of axle sleeve 3 after, spacing with back-up ring 9, the mandrel 7 that is flap valve can move axially, its end contacts with the movable contact of sensitive switch 5, reaches the break-make operating state of monitoring blower fan.
Go back suit nonwoven fabrics 10 and snap ring 11 on axle sleeve 3, snap ring 11 is to add some connection ribs between two donuts to make formation in aggregates, and equipped with intracardiac ring and axle sleeve 3, and concentric outer shroud and shell 2 are equipped, and is fixed nonwoven fabrics 10.Nonwoven fabrics 10 is fiber textiles of a kind of good air permeability, plays dustproof effect in main body 1.
The outer cover 12 of transparent engineering plastics injection mo(u)lding covers the circular arc convex surface 8 of flap valve, and with shell 2 between be connected with tongue and groove; At least be provided with the pore 13 of 3 projectioies that communicate with inner chamber on the periphery of outer cover 12, and between the inner surface of outer cover 12 and the circular arc convex surface 8 spacing is arranged, be communicated with atmosphere, keep circular arc convex surface 8 outsides of flap valve to be under the atmospheric pressure, see through the action that outer cover 12 can be observed flap valve simultaneously, it also plays the effect of blocks dust.
Fig. 2 tilts or horizontal operation mode user mode schematic diagram for the utility model, and it is by being with the bulge loop 14 of installing hole to be directly installed on the wallboard of air channel on the outer circumference surface of shell 2.During use, behind the fan starting, form negative pressure in the air channel, be the atmosphere malleation outside the air channel, the inside and outside formation positive and negative pressure of flap valve promotes circular arc convex surface 8 and moves to the inside vertically, depress the movable contact of sensitive switch 5, make it often open node and connect, circuit shows fan operation.When blower fan breaks down, no air flows in the air channel can not form negative pressure, the outside is atmospheric pressure in the flap valve, under the component and the acting in conjunction of sensitive switch movable contact restoring force of gravity, moves laterally vertically, movable contact resets, and normally closed node is connected, and circuit shows fan trouble.
Fig. 3 is the vertical working method user mode of a utility model schematic diagram, and it is to be installed in the air channel by support.When fan starting, the motion from bottom to top of air stream enters main body 1 promotion flap valve and moves up, and sensitive switch 5 movable contacts are thrown off, and normally closed node is connected, and circuit shows fan operation.When blower fan breaks down, airless in the air channel, flap valve moves down because of gravity, and the switch movable contact presses down, and often opens node and connects, and circuit shows fan trouble.
Claims (6)
1, a kind of gravity assist type air pressure relay comprises main body and sensitive switch; It is characterized in that described main body (1) comprises short cylindrical shape hollow casing (2), be positioned at the axial axle sleeve (3) that settle at described shell (2) center, and the rectangle housing (4) that is connected with described axle sleeve (3) one ends; Described shell (2), axle sleeve (3) and rectangle housing (4) are connected as a single entity with the rib of ring-type and criss-cross construction; Described axle sleeve (3) center is provided with circular hole and is communicated with described rectangle housing (4), and the movable contact of the equipped described sensitive switch (5) of aligning and described rectangle housing (4), and add a cover (6) fixing; Flap valve is the umbrella-shaped structure that mandrel (7) and circular arc convex surface (8) are formed, described mandrel (7) and described circular arc convex surface (8) respectively with the center hole and described shell (2) active mounting of described axle sleeve (3) after, usefulness back-up ring (9) is spacing.
2, gravity assist type air pressure relay according to claim 1, it is characterized in that on described axle sleeve (3), going back suit nonwoven fabrics (10) and snap ring (11), described snap ring (11) is to add some connection ribs between two donuts to make formation in aggregates, and it is equipped with intracardiac ring and described axle sleeve (3), and concentric outer shroud and described shell (2) are equipped, and are fixed described nonwoven fabrics (10).
3, gravity assist type air pressure relay according to claim 1 and 2 is characterized in that the outer cover (12) of transparent engineering plastics injection mo(u)lding covers the described circular arc convex surface (8) of flap valve, and with described shell (2) between be connected with tongue and groove; At least be provided with the pore (13) of 3 projectioies that communicate with inner chamber on the anchor ring of described outer cover (12), and between the inner surface of described outer cover (12) and the described circular arc convex surface (8) spacing arranged.
4, gravity assist type air pressure relay according to claim 3 is characterized in that the centre of the circular arc convex surface (8) of described flap valve is provided with the blind hole that is used for fixing counterweight.
5, gravity assist type air pressure relay according to claim 4 is characterized in that the excircle of described shell (2) is provided with the bulge loop (14) that band installs and fixes the hole.
6, gravity assist type air pressure relay according to claim 5 is characterized in that described main body (1), snap ring (11), flap valve and lid (6) use the engineering plastics injection mo(u)lding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420007357 CN2717001Y (en) | 2004-03-23 | 2004-03-23 | Gravity assistance type air pressure relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420007357 CN2717001Y (en) | 2004-03-23 | 2004-03-23 | Gravity assistance type air pressure relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717001Y true CN2717001Y (en) | 2005-08-10 |
Family
ID=34869924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420007357 Expired - Lifetime CN2717001Y (en) | 2004-03-23 | 2004-03-23 | Gravity assistance type air pressure relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717001Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037015A (en) * | 2013-03-08 | 2014-09-10 | 上海骏颉自动化设备有限公司 | Pneumatic switch |
-
2004
- 2004-03-23 CN CN 200420007357 patent/CN2717001Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037015A (en) * | 2013-03-08 | 2014-09-10 | 上海骏颉自动化设备有限公司 | Pneumatic switch |
| CN104037015B (en) * | 2013-03-08 | 2018-10-23 | 上海骏颉自动化设备有限公司 | A kind of pneumatic switch and the method using a pneumatic switch protection fans load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SIFANG JISI ELECTRIC CO., LTD. Free format text: FORMER NAME OR ADDRESS: BEIJING JISI ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 9 East four street, Beijing, Haidian District, East six, zip code: 100085 Patentee after: Beijing Sifang Jisi Electronic Co., Ltd. Address before: Room 1002, building B, academic building, Tsinghua University, Beijing, Haidian District 100084, China Patentee before: Beijing GEC Electrical Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140323 Granted publication date: 20050810 |