CN202007987U - Sealing device for gas cabinet - Google Patents
Sealing device for gas cabinet Download PDFInfo
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- CN202007987U CN202007987U CN2011201095602U CN201120109560U CN202007987U CN 202007987 U CN202007987 U CN 202007987U CN 2011201095602 U CN2011201095602 U CN 2011201095602U CN 201120109560 U CN201120109560 U CN 201120109560U CN 202007987 U CN202007987 U CN 202007987U
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- sealing
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- gas
- gas cabinet
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Abstract
The utility model discloses a sealing device for a gas cabinet, which comprises two groups of sealing assemblies, a rubber hanging mechanism and a rubber compaction mechanism, wherein the two groups of sealing assemblies are arranged up and down along the axial direction of the gas cabinet; and the rubber hanging mechanism is fixed on a piston box beam. A connecting rod of the rubber compaction mechanism is articulated with a rubber clamping mechanism of the sealing assemblies, so that a sealing rubber strip is closely adhered on the inner wall of a lateral plate of a cylinder body. An anti-tipping baffle is arranged between the sealing rubber strip and the piston box beam. Due to the arrangement of the anti-tipping baffle, the position limiting can be realized and the sealing assemblies can be prevented from tipping over; in addition, the maximum running speed of a piston can be increased to more than 3m/min (3 to 7m/min) and the piston can continuously run for a period of time. The sealing device has the following important effects: with the adoption of the sealing device, the gas cabinet can automatically stabilize the pressure of a pipe network and the thermal regulation of a gas user, the running safety of a gas system is improved, energy is saved and environmental protection is realized. Therefore, the sealing device is particularly suitable for a gas pipe network system in need of high gas throughput (the speed of the piston is pretty high) and continuous running for a period of time.
Description
Technical field
The utility model belongs to technical field of sealing technology, is specifically related to a kind of sealing device for gas cabinet.
Background technique
Development with the maximization of metallurgy industry blast furnace, the main users of blast furnace gas---power plant also trends towards maximizing, this requires to want big for the throughput of the gas cabinet of gas transmission and distribution system service, be that velocity of piston is fast, and want continuous service a period of time, switch the required times such as fuel with assurance scheduling coal gas and user, guarantee the safety in production operation of coal gas system to greatest extent and reduce the coal gas diffusion rate.For example, 5000m
3The unexpected damping down of blast furnace the time, gas cabinet needs to replenish about 750,000 m to pipe network
3The coal gas amount of/h, corresponding 150,000 m
3The about 6m/min of the velocity of piston of gas cabinet, as adopt 300,000 m
3The about 4m/min of the velocity of piston of gas cabinet; 900,000 m burn
3When the boiler of/h blast furnace gas was shut down suddenly, gas cabinet need receive about 900,000 m of pipe network
3The coal gas amount of/h, corresponding 150,000 m
3The about 7m/min of the velocity of piston of gas cabinet, as adopt 300,000 m
3The about 5m/min of the velocity of piston of rare gas cabinet, so high motion speed lower piston is wanted continuous service a period of time, just can give full play to gas cabinet automatic stabilisation ductwork pressure and coal gas user thermal regulation, improve the important function of coal gas system safety in operation and energy-conserving and environment-protective.
Seal arrangement is the key core parts of gas cabinet.The velocity of piston of type dry gas holder of can swelling can reach 5 ~ 7m/min, once be the first-selected cabinet type that stores of blast furnace gas in the world, but this cabinet type piston seal method adopt drier oil (being lubricating grease) lubricated+pattern of sealing rubber strip, facts have proved and to avoid the seal arrangement leakage gas, domesticly stop to promote this cabinet type already.Existing polygonal thin oil seal gas cabinet (is Oman Ah grace type gas holder or graceful type cabinet, hereinafter to be referred as the polygonal cabinet) velocity of piston generally is no more than 1.2m/min, and existing cylindrical shape thin oil seal gas cabinet (is POC type gas holder or novel cabinet, hereinafter to be referred as the cylindrical shape cabinet) velocity of piston reached 2.5m/min, and these the two kinds of thin-oil sealed gas tank velocity of piston so main cause of great disparity are exactly the difference of the seal arrangement of these two kinds of thin-oil sealed gas tanks.
China utility model patent specification CN2527835Y and CN201014192Y all disclose the structure of cylindrical shape cabinet piston sealing device, it is made up of black box, rubber suspension gear and rubber hold-down mechanism, sealing rubber strip and rubber clamping device that black box comprises pressing plate, sealing canvas, separated by folder wood, they connect into an integral body by screw rod, black box is suspended on the piston case ellbeam by the rubber suspension gear, and the rubber hold-down mechanism is close on the inwall of cylindrical shell side plate sealing rubber strip.
In existing cylindrical shape cabinet piston sealing device, about the about 4kPa of differential pressure between the inside and outside sealing of the sealing canvas oil and gas, the tension force of the pulling force of rubber suspension gear and sealing canvas to the moment of rotation of sealing rubber strip by rubber hold-down mechanism balance, along the gas cabinet circumferencial direction, establish 1 set of weights lever about the about spacing 600mm of rubber hold-down mechanism, about spacing 300mm establishes 1 force that adds to sealing rubber strip, pressure is adjacent to side plate to make sealing rubber strip be subjected to uniformly, reduces the leakage of oil amount of seal arrangement.But when piston descends with fast speed, because the cylindrical shell side plate has welding deformation and local deformation, black box exist around the point of contact of the lower edge of sealing rubber strip and side plate to the piston case ellbeam tumble possible, in case tumble to the piston case ellbeam in the black box part, then the rubber hold-down mechanism significantly reduces by the level reinforcing that connecting rod is delivered on the sealing rubber strip, cause black box not reset, if piston continues to descend, the black box of then adjacent rubber hold-down mechanism position all can be tumbled like this, form domino effect, cause seal failure; Simultaneously, when piston descends fast, the side plate attaching oil increases and causes piston oil duct sealing oil position insufficient height, also can cause seal failure, though can solve by increasing piston oil duct oil level, simply increasing of piston oil level causes sealing canvas differential pressure increase up and down, and sealing rubber strip increases the pressure of cylindrical shell side plate, the abrasion of sealing rubber strip strengthen, the possibility of tumbling strengthens the piston sealing device Security decline and the lost of life.
Therefore, how to guarantee that Security, stability and the durability of the quick equidirectional persistent movement a period of time inner sealing device of piston become the matter of utmost importance of cylindrical shape cabinet velocity of piston raising.
Summary of the invention
In view of this, the utility model provides a kind of sealing device for gas cabinet, and the tumbling of black box in the time of can preventing the piston rapid movement improved the maximum operational speed of piston, to satisfy the demand of big throughput, improves the Security of coal gas system operation.
Sealing device for gas cabinet of the present utility model comprises two groups of black boies along gas cabinet axial direction upper and lower settings, is fixed in rubber suspension gear and rubber hold-down mechanism on the piston case ellbeam; Sealing rubber strip and rubber clamping device that described black box comprises pressing plate, sealing canvas, separated by folder wood, they connect into an integral body by screw rod, described sealing canvas one end is installed between the sealing rubber strip, and the other end is installed on the piston case ellbeam; Described black box is suspended on the piston case ellbeam by the rubber suspension gear; Described rubber hold-down mechanism comprises the weighted lever that is connected with the piston case ellbeam, be fixed in bearing on the piston case ellbeam, with the hinged connecting plate of bearing, be connected the wire rope of weighted lever and connecting plate and the connecting rod hinged with connecting plate; The rubber clamping device of the connecting rod of described rubber hold-down mechanism and black box is hinged to be made on the inwall that sealing rubber strip is close to the cylindrical shell side plate; Be provided with anti-tipping baffle plate between described sealing rubber strip and the piston case ellbeam.
Further, described anti-tipping baffle plate be connected with the piston case ellbeam and along the gas cabinet circumferential directions between the rubber hold-down mechanism.
The beneficial effects of the utility model are: the utility model is undertaken spacing by anti-tipping baffle plate is set, prevent that black box from tumbling, the piston maximum operational speed can be brought up to more than the 3m/min (3 ~ 7m/min), and continuously-running a period of time, can give full play to gas cabinet automatic stabilisation ductwork pressure and coal gas user thermal regulation, improve the important function of coal gas system safety in operation and energy-conserving and environment-protective, be particularly useful for big coal gas throughput (velocity of piston is very fast) of needs and the gas pipe net system of need continuous service a period of time.
Description of drawings
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is a structural representation of the present utility model.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.
Fig. 1 is a structural representation of the present utility model, as shown in the figure, sealing device for gas cabinet of the present utility model comprises two groups of black boies along gas cabinet axial direction upper and lower settings, is fixed in rubber suspension gear 2 and rubber hold-down mechanism on the piston case ellbeam 1; Described black box comprises pressing plate 3, sealing canvas 4, by folder wood 5 sealing rubber strips that separate 6 and rubber clamping device 7, they connect into an integral body by screw rod, described sealing canvas 4 one ends are installed between the sealing rubber strip 6, and the other end is installed on the piston case ellbeam 1; Described black box is suspended on the piston case ellbeam 1 by rubber suspension gear 2; Described rubber hold-down mechanism comprises the weighted lever 8 that is connected with piston case ellbeam 1, be fixed in bearing on the piston case ellbeam 1, with the hinged connecting plate 10 of bearing, be connected weighted lever 8 and connecting plate 10 wire rope 11 and with the hinged connecting rod 12(figure of connecting plate 10 in the rubber hold-down mechanism in anti-tipping baffle plate 14 back); The connecting rod 12 of described rubber hold-down mechanism and the rubber clamping device of black box 7 be hinged to be made on the inwall that sealing rubber strip 6 is close to cylindrical shell side plate 13; Be provided with anti-tipping baffle plate 14 between described sealing rubber strip 6 and the piston case ellbeam 1, described anti-tipping baffle plate 14 be connected with piston case ellbeam 1 and along the gas cabinet circumferential directions between the rubber hold-down mechanism.
When piston descends with fast speed, because cylindrical shell side plate 13 has welding deformation and local deformation, black box exist around the point of contact A of the lower edge of sealing rubber strip 6 and side plate 13 to piston case ellbeam 1 tumble possible, undertaken spacing by anti-tipping baffle plate 14 is set, prevent that black box from tumbling, the piston maximum operational speed can be brought up to more than the 3m/min (3 ~ 7m/min), and continuously-running a period of time.
In the present embodiment, owing to be provided with anti-tipping baffle plate 14, the black box phenomenon of can not tumbling, when preventing that piston from descending fast, the side plate attaching oil increases the piston oil duct sealing oil position insufficient height that causes, the required side plate of piston rapid movement can be adhered to oil mass and be stored in the piston oil duct, promptly suitably increase piston oil duct design height (dotted line 15 is existing piston oil duct standard oil bit line among the figure, and solid line 16 is the piston oil duct oil level line after increasing); For making the adhesion amount of sealing oil in winter on cylindrical shell little, reduce piston oil duct oil level wave range, adopt the sealing oil of viscosity higher index.
In the present embodiment, be adjacent to cylindrical shell side plate 13, should suitably strengthen the strength of rubber hold-down mechanism for making upper strata sealing rubber strip 6; Adopt the bigger sealing rubber strip 6 of rigidity, strengthen the integrity of back sealing rubber strip and the needs of durability to satisfy pressure; Again check the rigidity of cylindrical shell side plate 13 by the pressure condition of 6 pairs of side plates 13 of sealing rubber strip,, reduce the seal arrangement oil leakage quantity to reduce the distortion of cylindrical shell side plate 13.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although by the utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and the spirit and scope of the present utility model that do not depart from appended claims and limited.
Claims (2)
1. sealing device for gas cabinet comprises two groups of black boies along gas cabinet axial direction upper and lower settings, is fixed in rubber suspension gear (2) and rubber hold-down mechanism on the piston case ellbeam (1); Sealing rubber strip (6) and rubber clamping device (7) that described black box comprises pressing plate (3), sealing canvas (4), separated by folder wood (5), they connect into an integral body by screw rod, described sealing canvas (4) one ends are installed between the sealing rubber strip (6), and the other end is installed on the piston case ellbeam (1); Described black box is suspended on the piston case ellbeam (1) by rubber suspension gear (2); Described rubber hold-down mechanism comprises the weighted lever (8) that is connected with piston case ellbeam (1), be fixed in bearing on the piston case ellbeam (1), the connecting plate (10) hinged with bearing, be connected weighted lever (8) and the wire rope (11) of connecting plate (10) and the connecting rod (12) hinged with connecting plate (10); The connecting rod of described rubber hold-down mechanism (12) is close on the inwall of cylindrical shell side plate (13) with the hinged sealing rubber strip (6) that makes of rubber clamping device (7) of black box; It is characterized in that: be provided with anti-tipping baffle plate (14) between described sealing rubber strip (6) and the piston case ellbeam (1).
2. sealing device for gas cabinet according to claim 1 is characterized in that: described anti-tipping baffle plate (14) be connected with piston case ellbeam (1) and along the gas cabinet circumferential directions between the rubber hold-down mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201095602U CN202007987U (en) | 2011-04-14 | 2011-04-14 | Sealing device for gas cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201095602U CN202007987U (en) | 2011-04-14 | 2011-04-14 | Sealing device for gas cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007987U true CN202007987U (en) | 2011-10-12 |
Family
ID=44749645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201095602U Expired - Lifetime CN202007987U (en) | 2011-04-14 | 2011-04-14 | Sealing device for gas cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007987U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213359A (en) * | 2011-04-14 | 2011-10-12 | 中冶赛迪工程技术股份有限公司 | Sealing device for gas tank |
| CN105509105A (en) * | 2014-09-26 | 2016-04-20 | 爱烙达股份有限公司 | Gas furnace with anti-overturning safety device |
-
2011
- 2011-04-14 CN CN2011201095602U patent/CN202007987U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213359A (en) * | 2011-04-14 | 2011-10-12 | 中冶赛迪工程技术股份有限公司 | Sealing device for gas tank |
| CN102213359B (en) * | 2011-04-14 | 2013-04-10 | 中冶赛迪工程技术股份有限公司 | Sealing device for gas tank |
| CN105509105A (en) * | 2014-09-26 | 2016-04-20 | 爱烙达股份有限公司 | Gas furnace with anti-overturning safety device |
| CN105509105B (en) * | 2014-09-26 | 2017-10-13 | 爱烙达股份有限公司 | Gas furnace with overturning-preventing safety device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111012 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |