CN204062027U - high voltage direct current swing check valve - Google Patents
high voltage direct current swing check valve Download PDFInfo
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- CN204062027U CN204062027U CN201420500077.0U CN201420500077U CN204062027U CN 204062027 U CN204062027 U CN 204062027U CN 201420500077 U CN201420500077 U CN 201420500077U CN 204062027 U CN204062027 U CN 204062027U
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Abstract
A kind of high voltage direct current Swing check valve.Solving existing safety check opens slowly, returns the large problem of a power and high pressure water hammer when flap falls after rise.It comprises valve seat, flap, valve gap and valve body, Y type medium channel is provided with in described valve body, the inwall of described valve body is provided with cantilever, described cantilever and flap are hinged by hinging shaft, described hinging shaft is located between flap end face and flap center line, and described flap has the primary importance that seals mutually with valve seat and rotates the second place making medium channel circulation medium around hinging shaft.The utility model adopts the valve body of integral type, and hinge axis is directly connected with flap side, and cantilever is short makes flap keying sooner, at resisting medium or unclean medium breaker in middle flexibly, greatly reduces the cost of production of product; And the utility model flap to return a power when falling after rise little, the shut-in time is very short, considerably increases working life and the safety in utilization of product.
Description
Technical field
The utility model relates to a kind of safety check, is specifically related to a kind of high voltage direct current Swing check valve.
Background technique
Safety check (One-way valve), also known as check valve, one-way valve, one-way valve or check valve, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to a direction, to try to avert accidents.Safety check is drawn by structure can be divided into Lift check valve, Swing check valve and butterfly check valve three kinds, gives the structure of existing Y type Lift check valve, give the structure of existing Swing check valve in accompanying drawing 2 in accompanying drawing 1.Flap and the rocking arm of existing Swing check valve are bolted usually, and rocking arm is normally connected with cantilever by hinging shaft, cantilever is fixed by screws on the journal stirrup of valve body, existing Swing check valve, because hinging shaft is away from flap center, opens and closes the distance needing to rotate large, exists slow in one's movements, when flap falls sealing surface after rise, return seat power large, larger to valve seating impact, reduce the working life of product; And existing Swing check valve is generally through-type, volume is comparatively huge, causes the cost of production of valve body higher.Existing Y type Lift check valve, usually its circulation passage is Y type, and flap is installed in valve body by scaffold, and flap coordinates with valve interior wall slip, such structure must cause the slideway of valve body longer, and the structure of scaffold considerably increases the cost of production of product; Though slippage is engaged in cleaning medium can be movable flexibly, medium toughness or the stuck cunning of unclean easy appearance motionless, when making valve need to open and close there is not security incident in action.The shutoff stroke of these two kinds of high-pressure check valves is long, shut-in time is long, it is long that reflux medium produces the time of accelerating, before shutting, the very large kinetic energy of medium formation impacts flap and valve pocket after shutting, the safe handling of valve is worked the mischief, this phenomenon is water attack, and pressure duct water hammer is very serious, can not effectively avoid causing pipeline to explode.
Summary of the invention
Open and close slowly for solving existing safety check in background technique, a power is returned large during flap falling, the Water Hammer produced after the backflow of medium long period destroys pipeline, and Y shape lift check valve in viscosity or unclean medium easy stuck action not problem, the utility model provides a kind of high voltage direct current Swing check valve.
The technical solution of the utility model is: a kind of high voltage direct current Swing check valve, comprise the valve body of valve seat, flap, valve gap and integral type, Y type medium channel is provided with in described valve body, the inwall of described valve body is provided with journal stirrup, described journal stirrup is fixed with cantilever, described cantilever and flap are hinged by hinging shaft, described hinging shaft is located between flap end face and flap center line, and described flap has the primary importance that seals mutually with valve seat and rotates the second place making medium channel circulation medium around hinging shaft.
Improve as one of the present utility model, described hinging shaft is a to the distance near hinging shaft side valve lobe end face, and hinging shaft is that b, a equal 1/3b to the distance of flap center line.
As further improvement of the utility model, the internal surface of described valve seat and flap sealing place is mutually the conical surface.
As further improvement of the utility model, on described flap, heap is welded with metal seal, and described metal seal seals mutually with valve seat.
As further improvement of the utility model, be provided with containing groove in described valve body, described valve seat is located in containing groove.
As further improvement of the utility model, described valve seat is provided with annular groove on the outer surface near valve seat and flap sealing place.
As further improvement of the utility model, described flap surface is curved.
As further improvement of the utility model, described valve gap is fixed with spool, between described spool and valve gap, is provided with seal ring and pendant collet.
As further improvement of the utility model, the internal surface that described seal ring and spool seal mutually is inclined-plane.
The beneficial effects of the utility model are, by the structure assembly of Y type rise-fall type and Swing check valve in the utility model, and adopt the valve body of integral type, the utility model valve is made to bear pressure in a high voltage state safer, and not easily occur leaking outside, the hinging shaft of cantilever is connected with the direct of flap and shortens keying stroke, the utility model is made to open and close speed faster, slippage routing motion in the form of piston is not had in opening-closing process, so resisting medium or unclean medium breaker in middle flexible, and structure is less, greatly reduce the cost of production of product; And the position that the utility model cantilever and flap hinging shaft are arranged, flap can reliably be opened, and to return a power when making again flap fall after rise little simultaneously, considerably increases the working life of product.And the utility model also has, and structure is simple, easy to assembly, flap sealing is reliable, flap opens and closes the advantages such as rapid.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of existing Lift check valve.
Accompanying drawing 2 is the structural representation of existing Swing check valve.
Accompanying drawing 3 is the structural representation of the utility model embodiment.
In figure, 1, valve seat; 11, the conical surface; 12, annular groove; 2, flap; 21, metal seal; 22, arc; 3, valve gap; 4, valve body; 41, medium channel; 42, cantilever; 43, containing groove; 44, journal stirrup; 5, hinging shaft; 6, spool; 7, seal ring; 71, inclined-plane; 8, pendant collet.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 3, a kind of high voltage direct current Swing check valve, comprise the valve body 4 of valve seat 1, flap 2, valve gap 3 and integral type, be provided with Y type medium channel 41 in described valve body 4, the inwall of described valve body 4 is provided with journal stirrup 44, described journal stirrup 44 is fixed with cantilever, described cantilever 42 is hinged by hinging shaft 5 with flap 2, and specifically, cantilever 42 and flap 5 are directly hinged by hinging shaft 5, avoid being connected by rocking arm, shorten and open and close stroke and greatly reduce the valve opening and closing time.Described hinging shaft 5 is located between flap 5 end face and flap 5 center line.Specifically, described hinging shaft 5 is a to the distance near hinging shaft 5 side valve lobe 2 end face, hinging shaft 5 is b to the distance of flap 2 center line, optimal way is that the ratio of a and b is greater than 1/4 and is less than or equal to 1, specifically, a equals 1/3b, namely hinging shaft 5 equals the distance of 1/3 hinging shaft to flap center line to the distance of flap end face, can ensure that flap reliably rotarily opens like this, a power is returned less when flap can be made again to fall after rise, in particular, hinging shaft is located at the oblique upper of flap center line, reliably rotates around hinging shaft as long as can meet flap.In particular, reliable rotation be realized, calculation and check must be carried out to the size between the cone angle of sealing surface, conical surface position, hinging shaft relative coordinate, make hinged central point and the valve seat near-end conical surface large end points line angle be greater than 90 °.Described hinging shaft 5 is arranged on the side, center at the flap back side, and only need do a flip angle when flap is opened and just open completely, the opening time is very short; Also be do a reverse flip angular motion just to close rapidly during closedown, medium does not also have enough time to reflux and accelerates just to close, the effective like this harm controlling the excessive kinetic energy impact valve of reflux medium and cause, effectively controls the generation of water hammer on pipeline.Described flap 2 has the primary importance that seals with valve seat 1 phase and rotates around hinging shaft 5 second place making medium channel 41 circulation medium.The beneficial effects of the utility model are, by the structure assembly of Y type rise-fall type and Swing check valve in the utility model, and adopt the valve body of integral type, the utility model valve is made to bear pressure in a high voltage state safer, and not easily occur leaking outside, the hinging shaft of cantilever is connected with the direct of flap and shortens keying stroke, the utility model is made to open and close speed faster, slippage routing motion in the form of piston is not had in opening-closing process, so resisting medium or unclean medium breaker in middle flexible, and structure is less, greatly reduce the cost of production of product; And the position that the utility model cantilever and flap hinging shaft are arranged, flap can reliably be opened, and when making again flap fall, stroke is short simultaneously, and the time being promoted to accelerate by medium is short, and the kinetic energy of generation is little, and time seat power is little; In addition because hinging shaft is directly on flap; when flap is closed; the kinetic energy of the hinged axle head of flap can be absorbed by cantilever and hinging shaft major part, and small part passes on sealing surface clashes into, and flap does not have the power of one end kinetic transformation of hinging shaft much little compared with other structure yet; this tries hard to recommend dynamic flap far-end; it is made to produce necessary seal pressure and produce sealing, so optimal design is revolved open height, hinging shaft position; the effect protecting sealing surface fully can be realized, considerably increase the working life of product.And the utility model also has, and structure is simple, easy to assembly, flap sealing is reliable, flap opens the advantages such as rapid.
Described valve seat 1 is the conical surface 11 with the internal surface of flap 2 phase sealing place.By the conical surface make valve seat and flap sealing effect better.Specifically, the sealing cone on flap is little, and the sealing cone on valve seat is large, and flap is promoted wedging in the large conical surface of valve seat by medium, presses tighter and tighter and reliable sealing; On described flap 2, heap is welded with metal seal 21, and described metal seal 21 seals with valve seat 1 phase.Such structure avoids Sealing to seal the wearing and tearing at position, good sealing effect under the prerequisite not needing the cost of production increasing flap, and specifically, described metal seal adopts the Hardmetal materials of wear resistant corrosion resistant to make.
Be provided with containing groove 43 in described valve body 4, described valve seat 1 is located in containing groove 43.Specifically, described valve seat 1 is being provided with annular groove 12 on valve seat 1 with the outer surface of flap 2 sealing place.Annular groove can provide certain elastic packing to compensate to valve seat, due to flap close time, the near-end kinetic energy of hinging shaft and power are by cantilever and hingedly weaken, the power of flap far-end is owing to impacting the large of nearer end, valve seat needs elasticity to absorb and impacts and compensate unbalance stress, make the automatic capturing sealing in the large circular cone of sealing surface of seat of valve clack sealing surface conicle, make sealing very reliable like this, close to impact and also can not damage sealing surface.Valve because the elasticity of valve seat extrudes, makes medium more easily open flap when opening, because the conical surface oblique angle of flap and valve seat is much larger than the friction self-locking angle of sealing material, when nature, elastic force is conducive to flap unlatching.Such cyclic spring valve seat, is conducive to sealing and alleviates surge protection valve seat, making flexibility and reliability more during unlatching during closedown.Also the reliable Unscrew of flap be can make simultaneously, sealability and the switch flexibility of product ensured further.
Described flap 2 surface curved 22.Such structure makes the intensity of flap better, and volume is just little, and weight is just light; So the moving element of flap 2 compared with the lifting flap moving parts in technical background and rotary valve lobe moving parts volume much little, much lightweight, therefore the impact produced in closing process is just much little, is conducive to protecting sealing surface of seat, and improves working life.
Described valve gap 3 is fixed with spool 6, between described spool 6 and valve gap 3, is provided with seal ring 7 and pendant collet 8.Pendant collet is for stoping seal ring outwards movement, when making spool be subject to pressure medium, spool is movement outwards, promotion seal ring moves, and seal ring is moved by pendant collet prevention, at this moment crush seal ring inclined-plane, spool inclined-plane, sealing surface inclined-plane extrudes valve interior wall more simultaneously, make seal ring wedging between spool and valve interior wall, because seal ring is soft metal, valve interior wall position and position, spool inclined-plane be built-up welding high hardness alloy all, second compresses seal and sealing simultaneously, makes sealing effect in a high voltage state good especially; When pressure medium is not enough, the bolt on spool carries out pretension, makes spool be pressed on seal ring, realizes low pressure seal, and sealing is very more reliable, there will not be any phenomenon that leaks outside.In particular, the internal surface that described seal ring 7 and spool 6 phase seal is inclined-plane 71, the sealability arranging increase product further on inclined-plane.
The utility model is rationally arranged by the position of hinging shaft, and the elasticity conical surface design of valve seat, the strength optimization of flap and the simplified design of moving element, the valve design of one, solves several hang-ups of the existing valve kind in technical background fully.And more existing valve mechanism is simple, lightweight, the advantageous effects that reaching economizes on resources reduces costs, has extraordinary marketing prospect.
Every technician's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this invention; the repacking of any utilization the utility model thought, all will include in this patent scope of patent protection.
Claims (9)
1. a high voltage direct current Swing check valve, it is characterized in that: comprise valve seat (1), flap (2), the valve body (4) of valve gap (3) and integral type, Y type medium channel (41) is provided with in described valve body (4), the inwall of described valve body (4) is provided with journal stirrup (44), described journal stirrup (44) is fixed with cantilever (42), described cantilever (42) and flap (2) are hinged by hinging shaft (5), described hinging shaft (5) is located between flap (5) end face and flap (5) center line, described flap (2) has the primary importance that seals mutually with valve seat (1) and rotates the second place making medium channel (41) circulation medium around hinging shaft (5).
2. high voltage direct current Swing check valve according to claim 1, it is characterized in that described hinging shaft (5) is a to the distance near hinging shaft (5) side valve lobe (2) end face, hinging shaft (5) is that b, a equal 1/3b to the distance of flap (2) center line.
3. high voltage direct current Swing check valve according to claim 1, is characterized in that the internal surface of described valve seat (1) and flap (2) sealing place is mutually the conical surface (11).
4. the high voltage direct current Swing check valve according to claim 1 or 3, it is characterized in that the upper heap of described flap (2) is welded with metal seal (21), described metal seal (21) seals mutually with valve seat (1).
5. high voltage direct current Swing check valve according to claim 1, it is characterized in that being provided with containing groove (43) in described valve body (4), described valve seat (1) is located in containing groove (43).
6. high voltage direct current Swing check valve according to claim 5, is characterized in that described valve seat (1) is being provided with annular groove (12) on valve seat (1) with the outer surface of flap (2) sealing place.
7. high voltage direct current Swing check valve according to claim 1, is characterized in that described flap (2) surface curved (22).
8. high voltage direct current Swing check valve according to claim 1, is characterized in that described valve gap (3) is fixed with spool (6), is provided with seal ring (7) and pendant collet (8) between described spool (6) and valve gap (3).
9. high voltage direct current Swing check valve according to claim 8, is characterized in that the internal surface that described seal ring (7) and spool (6) seal mutually is inclined-plane (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500077.0U CN204062027U (en) | 2014-09-02 | 2014-09-02 | high voltage direct current swing check valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500077.0U CN204062027U (en) | 2014-09-02 | 2014-09-02 | high voltage direct current swing check valve |
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| CN204062027U true CN204062027U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420500077.0U Active CN204062027U (en) | 2014-09-02 | 2014-09-02 | high voltage direct current swing check valve |
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| CN (1) | CN204062027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214375A (en) * | 2014-09-02 | 2014-12-17 | 宣达实业集团有限公司 | HVDC (High Voltage Direct Current) swing check valve |
| CN111059303A (en) * | 2019-12-28 | 2020-04-24 | 中船重工重庆液压机电有限公司 | Cone sealing structure and electromagnetic pilot control air valve |
-
2014
- 2014-09-02 CN CN201420500077.0U patent/CN204062027U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214375A (en) * | 2014-09-02 | 2014-12-17 | 宣达实业集团有限公司 | HVDC (High Voltage Direct Current) swing check valve |
| CN111059303A (en) * | 2019-12-28 | 2020-04-24 | 中船重工重庆液压机电有限公司 | Cone sealing structure and electromagnetic pilot control air valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |