CN100373090C - Floater type steam trap - Google Patents
Floater type steam trap Download PDFInfo
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- CN100373090C CN100373090C CNB2004100455624A CN200410045562A CN100373090C CN 100373090 C CN100373090 C CN 100373090C CN B2004100455624 A CNB2004100455624 A CN B2004100455624A CN 200410045562 A CN200410045562 A CN 200410045562A CN 100373090 C CN100373090 C CN 100373090C
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Abstract
Provided is a float type steam trap which can furthermore improve the valve closing ability, in the float type steam traps which can make an apparatus compact, and can improve the water discharging ability, and can improve the valve closing ability, and can prevent occurrence of the water hammering. A body 1 has a float chamber 1c, an inlet port 1d, and an outlet port 1e. A holder 3 has a passage 3a communicating with the outlet port 1e therein, and is fixed to the body 1 inside the float chamber 1c. A valve seat 5 is provided so as to communicate with the outlet port 1e. A float 4 has a floating ball 4a, and a lever 4b. The float 4 is provided in the float chamber 1c so as to vertically move. A valve body 6 is provided in the lever 4b. The lever 4b is fixed to the floating ball 4a at one end thereof, and is rotatably connected to the holder 3 at the other end thereof. The cross section of the edge of the sealing surface of the valve seat has the shape making a right angle or an acute angle.
Description
Technical field
The drain valve that the present invention relates to be connected with the steam pipe arrangement, can automatically condensed water be discharged with the machine that uses steam.
Background technique
Existing float type Automatic steam trap Trap such as Figure 13 and shown in Figure 14.Float type Automatic steam trap Trap 50 shown in Figure 13, one end of its fork 52 is fixed on the float 51, the other end then is supported with freely rotating, and the internal valve 53 of tubular is fixed on the fork 52, and this internal valve 53 has the structure that the energy interlock moves up and down in moving up and down of float 51.
In addition, float type Automatic steam trap Trap 60 shown in Figure 14, an end of its fork 62 is fixed on the float 61, and the other end is supported with freely rotating, spherical internal valve 63 is fixed on the lower end of fork 62, and this internal valve 3 is realized on-off action with the revolution action of fork 62.
In Figure 13 and float type Automatic steam trap Trap shown in Figure 14, if: the buoyancy of float is F, the distance of float center to the position of the gyration center of fork is L1, the distance of the position of the gyration center of fork to the mounting point of internal valve is L2, the section area of outflow opening is A, the condensed water pressure reduction in the ingress of outflow opening and outlet port is Δ P, then: the condition of valve opening be can be represented by the formula:
F * L1〉A * Δ P * L2 ... formula (1)
That is to say that in existing float type Automatic steam trap Trap, for making valve opening, according to formula, as long as F or L1 are increased, or make A, Δ P or L2 reduce to get final product; The problem that the increase of F or L1 can cause whole device to maximize.
In addition, if A is reduced, it is low then can to cause the discharge ability; If make L2 little,, therefore, can cause the discharge ability low owing to can't improve the amount of liter of internal valve.In addition, if make Δ P little, then can produce the problem of restriction service condition, shortage versatility.
In addition, the valve seat form of closing performance of the valve of the existing float type Automatic steam trap Trap of decision has the face contact type that moves up and down shown in Figure 13, the line contact-type of employing sphere shown in Figure 14, therefore, it is neither perfect to close performance and serviceability, the problem of steam leakage occurs producing.
At this, in order to address these problems, in the past, for the big float type Automatic steam trap Trap of discharge ability, whole device maximizes, and the Δ P that can use is less.In addition, for miniaturization and the big device of Δ P, the ability of then discharging is less.For this reason, in order to satisfy wider technical specifications, the tendency that type is wide in variety, device maximizes has appearred.
Like this, as solving the in-problem problem of float type Automatic steam trap Trap, there are following several:
1) when making the existing device integral miniaturization that maximizes, increases the discharge ability and enlarge the scope of working pressure.
2) improve closing property and serviceability, reduce the waste of unnecessary steam, realize economic operation.
3) prevent to be accompanied by sharply closing of internal valve and the generation of the water hammer that produces.
4) discharge in the big device of ability at condensed water, under the few situation of condensed water inflow amount, also can discharge continuously.
5) under the external interference of rapid condensed water flows into and device produces in carrying vibration etc., make the float can the explosion breakage.
In order to solve these existing problems, developed a kind of float type Automatic steam trap Trap (opening the 2002-195492 communique) by the present inventor, valve body wherein has been set in the following manner, promptly on buoyancy aid with reference to the spy, valve body can slide by relative valve seat with the moving up and down interlock of float, thus can the switch valve seat.
Summary of the invention
The object of the present invention is to provide a kind of float type Automatic steam trap Trap, it can be when making equipment miniaturization, improve closing performance and prevent and further improving and close performance on the basis of generation of water hammer of valve.
The float type Automatic steam trap Trap of technical solution of the present invention 1 is characterized by, and has: inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber; Float, this float can be arranged in the above-mentioned float chamber with moving up and down; Valve seat, this valve seat are communicated with above-mentioned outflow opening in above-mentioned float chamber; And valve body, in moving up and down of above-mentioned float and above-mentioned relatively valve seat slides and then the mode that opens and closes above-mentioned valve seat is arranged at above-mentioned float, wherein, made by the different material of wear-resisting property respectively with above-mentioned valve seat by above-mentioned valve body with interlock for this valve body.
The float type Automatic steam trap Trap of technical solution of the present invention 2 is characterized by, and has: inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber; Float, this float can be arranged in the above-mentioned float chamber with moving up and down; Valve seat, this valve seat are communicated with above-mentioned outflow opening and have the sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber, and the cross section of the seamed edge of above-mentioned sealing surface of seat is right angle or acute angle; And valve body, this valve body is by making than the low material of above-mentioned valve seat wear-resisting property, it is arranged on the above-mentioned float, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch.
The float type Automatic steam trap Trap of technical solution of the present invention 3 is characterized by, and has: inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber; Float, this float can be arranged in the above-mentioned float chamber with moving up and down; Valve seat, this valve seat are communicated with above-mentioned outflow opening and have the sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber, and the cross section of the seamed edge of above-mentioned sealing surface of seat is right angle or acute angle; And valve body, this valve body is by making than the low material of above-mentioned valve seat wear-resisting property, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch, this valve body is arranged at above-mentioned float in the following manner, promptly, when the above-mentioned relatively sealing surface of seat of this valve body slided, its Vertical direction with respect to above-mentioned sealing surface of seat was swung, and can make above-mentioned valve body sealing surface and above-mentioned seamed edge butt.
The float type drain valve of technical solution of the present invention 4, in technological scheme 1,2 or 3 on any one basis, it is characterized by, above-mentioned valve seat is made by stainless steel, other metals or ceramic-like materials, above-mentioned valve body is made by the carbon lower than above-mentioned valve seat wear resistance, stainless steel or other metals, when the side in above-mentioned valve seat and the above-mentioned valve body was made by stainless steel or other metal, the opposing party was then made by ceramic-like materials or carbon.
The float type Automatic steam trap Trap of technical solution of the present invention 5 is characterized by, and has: inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber; Float, this float can be arranged in the above-mentioned float chamber with moving up and down; Valve seat, this valve seat are communicated with above-mentioned outflow opening and have a sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber; And valve body, this valve body is by making than the high material of above-mentioned valve seat wear-resisting property, it is arranged on the above-mentioned float, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch, the cross section of the seamed edge of above-mentioned valve body sealing surface is right angle or acute angle.
The float type Automatic steam trap Trap of technical solution of the present invention 6 is characterized by, and has: inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber; Float, this float can be arranged in the above-mentioned float chamber with moving up and down; Valve seat, this valve seat are communicated with above-mentioned outflow opening and have a sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber; And valve body, this valve body is by making than the high material of above-mentioned valve seat wear-resisting property, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch, the cross section of the seamed edge of above-mentioned valve body sealing surface is right angle or acute angle, this valve body is arranged at above-mentioned float in the following manner, promptly, when the above-mentioned relatively sealing surface of seat of this valve body slides, its Vertical direction with respect to above-mentioned sealing surface of seat is swung, and can make above-mentioned seamed edge be connected to above-mentioned sealing surface of seat.
The float type Automatic steam trap Trap of technical solution of the present invention 7, in technological scheme 1,5 or 6 on any one basis, it is characterized by, above-mentioned valve body is made by stainless steel, other metals or ceramic-like materials, above-mentioned valve seat is then made by the carbon lower than above-mentioned valve body wear resistance, stainless steel or other metals, when the side in above-mentioned valve seat and the above-mentioned valve body was made by stainless steel or other metals, the opposing party was then made by ceramic-like materials or carbon.
According to float type Automatic steam trap Trap of the present invention, when fluid flows into float chamber from inflow entrance, and fluid is when accumulating to established amount in float chamber, and float rises under buoyancy function.Float can move up and down in float chamber inside.When float rises, the valve body interlock and relatively valve seat slide, valve seat is opened.Like this, the fluid that accumulates in the float chamber is discharged through outflow opening from valve seat.When fluid when float chamber is discharged, float descends, valve body slides, and valve seat is closed.
Like this, owing to be that valve seat is closed in the relative valve seat slip of valve body, therefore, can when making equipment miniaturization, enlarge the scope of working pressure.In addition, can improve durability and also can under the little situation of condensation water quantity, keep continuous drainage.Moreover, because it is slow to discharge the variation of area, therefore, can prevent to be accompanied by sharply closing of internal valve and the water hammer that produces takes place.In addition, because valve body sealing surface is that face contacts with valve seat, the surface pressure of sealing surface will raise and increase with hydrodynamic pressure, therefore, valve close superior performance.
Float type Automatic steam trap Trap according to invention, because valve seat is made by the different material of wear resistance respectively with valve body, therefore, when valve seat being opened and closed when the relative valve seat slip of valve body, the side that wear resistance is little between valve seat and the valve body will be worn and torn, thereby seal is improved, and in addition, surface friction drag also diminishes.Therefore, when experiencing certain service time, the resistance force diminishes of the on-off action of valve body, performance improves.Moreover, for valve seat and valve body,, preferably can be loaded mutually slidably in its occasion of break-in each other.The little side of wear resistance between valve seat and the valve body, the side that its hardness is preferably big than wear resistance is high.
In addition, in the float type Automatic steam trap Trap according to technological scheme 2 of the present invention, when the relative valve seat of valve body slides, be that the valve body sealing surface of valve body can be cut the attachment of lip-deep chip and booty etc. fall under the effect of seamed edge of sealing surface of seat of right angle or acute angle in the cross section.When being attached with chip and booty etc. on valve body and the valve seat, the surface friction drag of valve body surface is increased, will cause that the pressure that action is produced descends.In the float type Automatic steam trap Trap of technological scheme 2 according to the present invention, by the attachment on valve body sealing surface surface is cut, can prevent the decline that can make the pressure that action produces that causes by attachment, thereby can improve performance and can keep normal performance.
In the float type Automatic steam trap Trap according to technical solution of the present invention 3, when the relative valve seat of valve body slides, be under the effect of seamed edge of sealing surface of seat of right angle or acute angle in the cross section, the valve body sealing surface of valve body is cut the attachment of the chip on surface and booty etc. fall.At this moment, valve body makes valve body sealing surface contact with seamed edge with respect to the vertical line direction swing of sealing surface of seat.Therefore, be easy to the lip-deep attachment of valve body sealing surface is cut.When being attached with chip and booty etc. on valve body and the valve seat, the surface friction drag of valve body surface being increased, thereby cause that the pressure that action is produced descends.In the float type drain valve of technological scheme 2 according to the present invention,, can prevent the decline that can make the pressure that action produces that causes by attachment S, thereby can improve performance and can keep normal performance by the attachment of valve body sealing surface is cut.
In the float type Automatic steam trap Trap according to technological scheme 5 of the present invention, when the relative valve seat of valve body slides, be under the effect of seamed edge of valve body sealing surface of right angle or acute angle in the cross section, the sealing surface of seat of valve seat can be cut the attachment of the chip on surface and booty etc. fall.When being attached with chip and booty etc. on valve body and the valve seat, the surface friction drag of valve body surface being increased, thereby cause that the pressure that produces action descends.In the float type drain valve according to technological scheme 3 of the present invention,, can prevent the decline that can make the pressure that action produces that causes by attachment, thereby improve performance and can keep normal performance by the attachment on sealing surface of seat surface is cut.
In the float type Automatic steam trap Trap according to technological scheme 6 of the present invention, when the relative valve seat of valve body slides, be under the effect of seamed edge of valve body sealing surface of right angle or acute angle in the cross section, the sealing surface of seat of valve seat can be cut the attachment of the chip on surface and booty etc. fall.At this moment, valve body makes seamed edge contact with valve body sealing surface with respect to the vertical line direction swing of sealing surface of seat.Therefore, be easy to the attachment on sealing surface of seat surface is cut.When being attached with chip and booty etc. on valve body and the valve seat, the surface friction drag of valve body surface is increased, will cause that the pressure that action is produced descends.In the float type drain valve according to technological scheme 4 of the present invention,, can prevent the decline that can make the pressure that action produces that causes by attachment, thereby improve performance and can keep normal performance by the attachment on sealing surface of seat surface is cut.
In the present invention, be preferably between the support member of valve body and valve body and design the gap so that valve body is swung easily.
In addition, float also can be provided with in the following manner, promptly, guide member is arranged in the float chamber, buoyancy aid moves reciprocatingly and can move up and down by relative this guide member, or by being fixed in an end of fork, and the other end of fork can be arranged on the main body pivotally, thereby can move up and down.The quantity of valve seat both can be 1 and also can be a plurality of.
In addition, in float type Automatic steam trap Trap of the present invention, be preferably, also has supporting member, and above-mentioned supporting member has the path that is communicated with above-mentioned outflow opening inner, and be fixed on the aforementioned body in the above-mentioned float chamber, above-mentioned valve seat is located on the above-mentioned supporting member and with above-mentioned path and is communicated with, above-mentioned float has float and fork, above-mentioned valve body is located on the above-mentioned fork, above-mentioned fork one is distolateral to be fixed on the above-mentioned float, and above-mentioned valve body can above-mentioned relatively valve seat slides with the moving up and down interlock of above-mentioned float, thereby can open and close above-mentioned valve seat, and its another distolateral can being located at pivotally on the above-mentioned fork.
As adopt this formation, and when floating function during in float, a distolateral relative supporting member of fork turns round upward, and the relative valve seat of valve body slides, and valve seat is opened.Like this, the fluid that accumulates in the float chamber is discharged from outflow opening through the path of valve seat and supporting member.When fluid when float chamber is discharged, float descends, a distolateral relative supporting member of fork turns round downwards, the relative valve seat of valve body slides, and valve seat is closed.Adopt this formation, can not only make simple structure also can make equipment miniaturization.
In addition,, can make fork very bigger, therefore, can enlarge the scope of working pressure at an easy rate, thereby can satisfy the requirement of using high pressure than (L1/L2) owing to can make the gyration center of fork and the variable in distance at valve body center.In addition, can get bigger fork, therefore, compare, can realize miniaturization with device with same row output capacity and identical working pressure than (L1/L2).In addition, the float of float can constitute one with fork, can only do rotation motion up and down because the action of float is restricted to, and therefore, even also can not make float out of control, thereby can prevent the breakage of float under the external interference of vibration etc.
Moreover above-mentioned valve seat preferably is arranged on the above-mentioned supporting member in the following manner, that is, by above-mentioned inflow entrance and above-mentioned outflow opening above-mentioned valve seat is communicated with stream at aforementioned body ground bottom side.In addition, owing to adopted the simple formation that fork is unloaded from supporting member, therefore, can easily keep in repair.The quantity of valve seat can adopt one or more, and in addition, valve seat can be arranged on the both sides of supporting member or a side only.
In relating to float type Automatic steam trap Trap of the present invention, above-mentioned valve seat can be made up of a plurality of, and corresponding above-mentioned valve body with each valve seat also can be made of a plurality of.
As adopt this formation, and can enlarge by the number that increases valve seat and can satisfy the scope that different displacements requires, can also realize the generalization of part.In addition, by obstruction, can easily change discharge capacity to valve seat 5.In this occasion, valve seat and embolization body are exchanged easily.
In float type Automatic steam trap Trap of the present invention, preferably, above-mentioned supporting member has a plurality of valve seats, on above-mentioned supporting member, be provided with a plurality of above-mentioned valve body corresponding with each valve seat, above-mentioned fork can make each valve body, and above-mentioned relatively valve seat slides with the moving up and down interlock of above-mentioned float, thereby above-mentioned valve seat is opened and closed, and its other end is arranged on above-mentioned supporting member pivotally.In this occasion, preferably a plurality of supporting members are arranged on the side of valve seat.
In addition, in float type Automatic steam trap Trap of the present invention, it can the axis with Vertical direction be the above-mentioned relatively float revolution in center on its glide direction that preferably above-mentioned valve body is set to.
As adopt this formation, because valve body is not that be fixed on the float but it is arranged to can be rotating, therefore, it is freely turned round when sliding with valve seat.Like this, just be difficult to injure sealing surface, in addition, also can remove attached to the chip of the fluid on the valve seat etc., can reach the inaccessible effect of maintaining valve and realize the long lifetime of part.Have, it can the axis with Vertical direction be the above-mentioned relatively float revolution in center on its glide direction that preferably above-mentioned valve body is set to again.In addition, preferably valve body is arranged to and is turned round around fork.
In relating to float type Automatic steam trap Trap of the present invention, also the sealing surface of above-mentioned valve body and above-mentioned valve seat can be formed on its direction toward each other than outstanding on every side curved surface shape.
As adopt this formation, and and the sealing surface of above-mentioned valve body and above-mentioned valve seat is made simple plane compare, can improve the performance of closing of the pressure of valve base surface and valve, in addition, can also reduce the damage of valve seat.
In relating to float type Automatic steam trap Trap of the present invention, aforementioned body can open and close, and above-mentioned supporting member is fixed on the aforementioned body by removable mode.
As adopt this formation, after it is arranged on the pipe arrangement, will main body not unload from pipe arrangement, as long as the main body of opening is taken out supporting member from main body, just can will take out from the outside together by float, valve body and supporting member, therefore, can cut down operation and the expense of safeguarding.
Description of drawings
Fig. 1 is the sectional view of the float type Automatic steam trap Trap of expression embodiments of the invention.
Fig. 2 is the sectional view of the II-II direction of arrow of presentation graphs 1.
Fig. 3 is the corresponding sectional view of the float type Automatic steam trap Trap of presentation graphs 1 sectional view variation and II-II direction of arrow Fig. 2.
Fig. 4 is the corresponding sectional view of another kind of sectional view variation and II-II direction of arrow Fig. 2 of float type Automatic steam trap Trap of presentation graphs 1.
Fig. 5 is the corresponding sectional view of sectional view another kind of variation and II-II direction of arrow Fig. 2 beyond the float type Automatic steam trap Trap of presentation graphs 1.
Fig. 6 A is the variation schematic representation that a plurality of valve seats are housed of the float type Automatic steam trap Trap of presentation graphs 1, and Fig. 6 B is the corresponding sectional view of sectional view with the II-II direction of arrow of Fig. 2.
Fig. 7 is the schematic representation of the center off-centre of the valve body of float type Automatic steam trap Trap of presentation graphs 1 and valve seat.
Fig. 8 is the sectional view that the variation major component of the valve body of expression float type Automatic steam trap Trap and valve seat is amplified.
Fig. 9 is the schematic representation that the opening area of the valve seat of expression float type Automatic steam trap Trap changes.
Figure 10 is the figure line that the opening area of the valve seat of expression float type Automatic steam trap Trap changes.
Figure 11 A is the valve body of expression float type Automatic steam trap Trap and the sectional view of valve seat, and Figure 11 B is the sectional view that major component is amplified.
Figure 12 A is the sectional view of the variation of the valve body of expression float type Automatic steam trap Trap and valve seat, and Figure 12 B is the sectional view that major component is amplified.
Figure 13 is the sectional view of the existing float type Automatic steam trap Trap of expression.
Figure 14 is the sectional view of the another kind of existing float type Automatic steam trap Trap of expression.
Embodiment
Fig. 1 to Figure 12 represents embodiments of the invention.
As shown in Figure 1, the float type Automatic steam trap Trap has: main body 1, filter 2, holder 3, float 4, valve seat 5 and valve body 6.Main body 1 be by will cover with bolt 7 1b can open and close the ground screw threads for fastening constitute at valve body 1a.
Shown in Figure 11 A and Figure 11 B, each valve seat 5 has sealing surface of seat 5b around opening 5a.Sealing surface of seat 5b is located at the inside of float chamber highlightedly.Shown in Figure 11 B, for each valve seat 5, the cross section of the seamed edge 5c of its sealing surface of seat 5b is the right angle, and the relative outer circumference side edge face 5d of sealing surface of seat 5b becomes to give prominence to steppedly.
Moreover as shown in Figure 3, valve seat 5 preferably can easily and not have the embolization body 8 of opening 5a to exchange.In addition, as shown in Figure 4, valve seat 5 is positioned at outer and valve body 6 is arranged on the inboard.In addition, as shown in Figure 5, valve seat 5 and valve body 6 also can be and are formed with one structure respectively.In addition, shown in Fig. 6 A and Fig. 6 B, the side that there is not that valve seat 5 and valve body 6 also can be at holder 3 is provided with 2, and promptly both sides are provided with 4 structure.
Float 4 has spherical, the floating body 4a and the fork 4b of ellipsoid shape and other shapes.Float 4 is arranged on the inside of float chamber 1c and can moves up and down therein.Floating body 4a is because its inside is sealing state, therefore, and can corresponding condensation water quantity and produce buoyancy.Fork 4b is bent to two forks, to stretch from the outstanding mode of floating body 4a.As shown in Figure 2, valve body 6 is installed on the side on two fork fork 4b both sides of position of corresponding valve seat 5, and can be center steering with gyration center 6a.Valve body 6 has valve body sealing surface 6b, and it can swing up and down interlock and sealing surface of seat 5b slip relatively with fork 4b, and valve seat 5 is opened and closed.The outer circumferential side 6c of valve body sealing surface 6b is bent to form circular arc.
One distolateral being fixed on the floating body 4a at fork 4b warpage place, another distolateral holder 3 that clips, and can be fixed on its both sides pivotally with bearing pin 4c.Therefore, fork 4b can be that fulcrum is done rotation motion up and down in float chamber 1c with bearing pin 4c.Like this, valve body 6 is with the interlock and turn round with fork 4b of moving up and down of floating body 4a, and valve seat 5 slides valve seat 5 is opened and closed relatively thus.Valve body 6 with respect to fork 4b with glide direction and with the axis of the perpendicular direction of sealing surface of seat 5b (referring to Fig. 8) of valve seat 5 be that the mode of center steering is mounted.Be provided with the gap between the mounting hole of valve body 6 and fork 4b, when relative sealing surface of seat 5b slides, can be with respect to the Vertical direction swing of sealing surface of seat 5b, make valve body sealing surface 6b can with seamed edge 5c butt.As shown in Figure 7, when valve body 6 is closed valve seat 5, also the center 5c of the opening 5a of the gyration center 6a of valve body 6 and valve seat 5 can be designed to off-centre.Therefore, by the sealing surface of seat 5b of fluid dynamic generation and the surface pressure inequality of valve body sealing surface 6b, can make valve body 6 be easy to revolution.
In the past, the material of valve seat and valve body all uses metal, will improve machining accuracy for the frictional resistance that reduces sealing surface and make this smooth surface, simultaneously, in order in the spreadable life, to keep this surperficial integrity, heat-treat or alloy deposited with improve the surface wear resistance.The principal element that is treated as the manufacture cost rising like this.To this, in this float type drain valve, because valve body is littler than metal by friction factor and the nonmetallic material of easy manufacturing, that is: carbon class material or ceramic-like materials are made, therefore, and metal is compared as the occasion of material, easy to manufacture and can reduce manufacture cost.
Will the required power of action, that is: for the valve body required power F that slides on valve seat is expressed as:
F=μ * A * P μ: friction factor, A: valve seat area, P: hydrodynamic pressure
Because A and P depend on the size of drain valve and the fixed value of condition, therefore, power F is the function of coefficientoffriction.Usually, the material of valve seat uses metal, will make smooth surface (raising machining accuracy) on the one hand in order to reduce coefficientoffriction, will improve the wear resistance (heat treatment and alloy are deposited) on surface on the other hand.In the material of sliding parts, owing to used the carbon class material with self-lubricating property, μ only is 1/2 of a metal, and therefore, the required power F that moves also is reduced to about 1/2.Like this, under the certain situation of the size of drain valve and service condition, can make equipment miniaturization.Under the certain situation of device size, working pressure is increased.
Have, for valve seat 5 and valve body 6, both also can use carbon class material or ceramic-like materials to make again.In addition, also can be with carbon class material or ceramic-like materials material as valve seat 5, with stainless steel and similarly other metals as the material of valve body 6.Under the situation of using carbon class material,, therefore, has the advantage that seal increases and significantly reduces the effect of surface friction drag under abrasive action because to compare friction factor little with stainless steel, and have the little characteristic of conjugation between hardness height and particle.Have again, also can make the material ratio that constitutes valve body 6 constitute the wear resistance height of the material of valve seat 5.
Because in the float type Automatic steam trap Trap, its valve seat 5 is to be made by the different material of wear resistance with valve body 6 each other, therefore, when valve body 6 relative valve seats 5 slips open and close valve seat 5, the valve body 6 littler than valve seat 5 wear resistancies can wear and tear and seal is improved, and in addition, surface friction drag also diminishes.Therefore, be accompanied by and experience certain service time, the resistance force diminishes of the on-off action of valve body 6, performance improves.
Under slip effect on the sealing surface 5b of valve body 6 at valve seat 5, the wearing and tearing of carbon class material production reach the effect identical with abrasive machining, make the surface grind more smoothly.Can expect to obtain than the littler friction factor of metal and the double effects of fine and smooth surface roughness more.In addition, carbon class material has good heat resistance, can use below 400 ℃ fully.In the occasion of using drain valve,, therefore, with regard to the pressure of saturated vapour, can use under various conditions because the fluid that uses is saturation water or saturated vapour.
Shown in Figure 12 A and Figure 12 B, as the variation of valve seat 5 and valve body 6, replace the section constitution right angle of seamed edge 5c of the sealing surface 5b of valve seat 5, can make the section constitution acute angle of seamed edge 6d of the sealing surface 6b of valve seat 6.In this occasion, the seamed edge 5c of valve seat 5 is bent to form circular-arc.In the case, the also available friction factor of valve seat 5 and valve body 6 and carbon class material or ceramic-like materials easy manufacturing littler than metal are made, and compare with valve body with the general valve seat that is made of metal, and friction factor also reduces.Since the valve seat of making by this material 5 and valve body 6 with metal is compared easy to manufacture as the occasion of material, therefore, can reduce cost.
As shown in Figure 8, as the variation of valve seat 5 and valve body 6, the sealing surface 5b of valve seat 5 and the sealing surface 6b of valve body 6 can be formed on the curved surface shape of giving prominence to around the ratio on the direction toward each other, also can make and tilt to be conical surface shape on every side.So, make the occasion of simple plane shape with sealing surface 6b with the sealing surface 5b of valve seat 5 and valve body 6 and compare, the real area of valve seat is little, and the surface pressure of valve seat 5 increases, and can improve the performance of closing of valve.In addition, also have characteristics to be, make conical surface shape and compare with simple plane shape, that interferes during owing to switching may reduce, and therefore, can avoid part impaired.
As shown in Figure 1, in the float type Automatic steam trap Trap,, enter float chamber 1c through filter 2, in float chamber 1c, accumulate gradually from inflow entrance 1d from the machine of use steam and the condensed water of steam pipe line outflow.Float 4 can move up and down in float chamber 1c inside.When the condensed water in the float chamber 1c accumulated to established amount, float 4 rose under buoyancy function.
When floating function during in float 4, the distolateral relative holder 3 of fork 4b turns round upward, valve body 6 interlocks and relatively valve seat 5 slides the opening 5a unlatching of valve seat 5 upward.So, the fluid that accumulates at float chamber 1c is discharged from outflow opening 1e through the path 3a of valve seat 5 and holder 3.When condensed water when float chamber 1c discharges, float 4 descends, the distolateral relative holder 3 of fork 4b turns round downwards, valve body 6 relative valve seats 5 slide downwards, and valve seat 5 is closed.
Usually hydrodynamic pressure is that valve body 6 is moved to the direction of pressing to valve seat 5, therefore, the surface pressure of the sealing surface 5b of valve seat 5 and the sealing surface 6b of valve body 6 will raise and increase with hydrodynamic pressure, thereby improved airtight performance, in addition, because valve body 6 and valve seat 5 slides and does motion on the plane, therefore, valve close superior performance.
So, owing to be relative valve seats 5 slips of valve body 6 and valve seat 5 is closed, therefore, simple structure can enlarge the scope of working pressure when making equipment miniaturization.As shown in Figure 9, because valve body 6 is to move in the mode that relative valve seat 5 slides, follow the rise variation of opening area of (SEA LEVEL VARIATION) valve seat 5 of float just to become the variation of the interference area (representing) of circle and circle with oblique line.As shown in figure 10, the variation of opening area is also much slow than valve seat that moves up and down and sphere valve seat.Therefore, can prevent to be accompanied by sharply closing of internal valve and the water hammer that produces.In addition, opening under the state, also can continuous drainage under the little situation of condensation water quantity.Owing to reduced the number of times of action, therefore, can satisfy the raising of durability and the requirement of part long lifetime.
In addition,, therefore, existing relatively valve seat is arranged on the structure in the outside of fork fulcrum, can makes fork very bigger than (L1/L2 is referring to Fig. 1) because valve body 6 can be arranged on the approaching position of bearing pin 4c as the fulcrum of fork 4b.Therefore, can satisfy the requirement of high pressure use and then the miniaturization of energy implement device.
In addition, the floating body 4a of float 4 and fork 4b are constituted one, can only do rotation motion up and down, therefore,, thereby can prevent the breakage of float 4 even float 4 can be not out of control yet under the external interference of vibration etc. because the action of float 4 is restricted to.Because fork 4b unloads from holder 3 easily, therefore, can unload and safeguard easily from main body 1.
In the float type Automatic steam trap Trap, because valve body 6 is not to be fixed on the fork 4b, but it is arranged to and can turns round on fork 4b, therefore, it is freely turned round when sliding with valve seat 5.Therefore, be difficult to injure sealing surface of seat 5b and valve body sealing surface 6b.In addition, also have the automatic cleaning action of removing attached to the chip on the valve seat 5, when can reach the effect that improves the valve airtight performance, realize the long lifetime of part.
The float type Automatic steam trap Trap, after being arranged on pipe arrangement, will main body 1 do not unload from pipe arrangement, unload and open main body 1 as long as will cover 1b from valve body 1a, just holder 3 can be taken out from main body 1, the parts that formed by float 4, valve body 6, valve seat 5 and holder 3 one the outside can be taken out to thus, therefore, formality and the expense safeguarded can be cut down.
As shown in figure 11, in this float type Automatic steam trap Trap, when the relative valve seats 5 of valve body 6 slided, the sealing surface 6b of valve body 6 was pushed down under the effect of seamed edge 5c of sealing surface 5b of valve seat at right angle, the attachment S of the chip on valve body sealing surface 6b surface and booty etc. can be cut.At this moment, valve body 6 makes valve body sealing surface 6b and seamed edge 5c butt with respect to the vertical line direction swing of sealing surface of seat 5b.Therefore, be easy to the attachment S on valve body sealing surface 6b surface is cut.
In the existing float type Automatic steam trap Trap that the relative valve 5 of valve body slides, according to the state in device that is mounted and the pipe arrangement, booty in the condensed water (chip) is attached on valve body and the valve seat, the surface friction drag of valve body surface is increased, consequently, in use cause the pressure decline that can make the drain valve action.To this, in float type Automatic steam trap Trap shown in Figure 11,, can prevent the decline of the pressure of the action that causes by attachment S by making attachment cut on valve body sealing surface 6b surface, improve performance and can keep normal performance.The fact shows, seamed edge 5c particularly near the standard-sized sheet when closing direction moves effect bigger.
Shown in Figure 12 A and Figure 12 B, cross section at the seamed edge 6d of the valve body sealing surface 6b of valve body 6 is under the occasion of acute angle, when valve body 6 relative valve seats 5 slide, the sealing surface 5b of valve seat 5 is pushed down under the effect of seamed edge 6d of sealing surface 6b of valve body of acute angle, the attachment S of the chip on surface and booty etc. can be cut.At this moment, valve body 6 makes seamed edge 6d and sealing surface of seat 5b butt with respect to the vertical line direction swing of sealing surface of seat 5b.Therefore, be easy to the attachment S on sealing surface of seat 5b surface is cut.When chip and booty etc. attached to valve body 6 and valve seat 5 on the time, the surface friction drag of valve body surface is increased, cause can produce the pressure decline of moving.By making attachment be cut sealing surface of seat 5b, can prevent from the decline of pressure that can produce action that causes by attachment S to improve performance and can keep normal performance.Because when operation, the pressure in the drain valve acts on and makes valve body 6 to the direction of pushing down with valve seat 5, and the effect of the high more seamed edge 6d of pressure effect is big more.
The effect of invention
If adopt floater type steam trap of the present invention, can be in the miniaturization of implement device same The time, improve drainability. In addition, because the relative valve seat of valve body is made sliding motion in the plane, therefore, Improved the performance of closing of valve, moreover, because the variation of the aperture area of valve is slow, therefore, can The water hammer that prevents from being accompanied by sharply closing of internal valve and produce. In addition, if adopt of the present invention Floater type steam trap can further improve and close performance.
Claims (7)
1. float type Automatic steam trap Trap is characterized in that having:
Inflow entrance and outflow opening that main body, this main body have float chamber and be communicated with above-mentioned float chamber;
Float, this float can be arranged in the above-mentioned float chamber with moving up and down;
Valve seat, this valve seat are communicated with above-mentioned outflow opening in above-mentioned float chamber; And
Valve body, this valve body with interlock in moving up and down of above-mentioned float and above-mentioned relatively valve seat slides and then the mode that opens and closes above-mentioned valve seat is arranged at above-mentioned float,
Wherein, above-mentioned valve body is made by the different material of wear-resisting property respectively with above-mentioned valve seat.
2. float type Automatic steam trap Trap as claimed in claim 1 is characterized in that,
Above-mentioned valve seat has the sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber, and the cross section of the seamed edge of above-mentioned sealing surface of seat is right angle or acute angle;
Above-mentioned valve body is by making than the low material of above-mentioned valve seat wear-resisting property, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch.
3. float type Automatic steam trap Trap as claimed in claim 2 is characterized in that,
Above-mentioned valve body is arranged at above-mentioned float in the following manner, that is, when the above-mentioned relatively sealing surface of seat of this valve body slided, its Vertical direction with respect to above-mentioned sealing surface of seat was swung, and can make above-mentioned valve body sealing surface and above-mentioned seamed edge butt.
4. as any described float type Automatic steam trap Trap in the claim 1,2 or 3, it is characterized by, above-mentioned valve seat is made by stainless steel, other metals or ceramic-like materials, when above-mentioned valve seat is made by stainless steel or other metals, above-mentioned valve body is made of carbon, when above-mentioned valve body was made by stainless steel or other metals, above-mentioned valve seat was made by ceramic-like materials.
5. float type Automatic steam trap Trap as claimed in claim 1 is characterized in that,
Above-mentioned valve seat has the sealing surface of seat that is arranged at highlightedly in the above-mentioned float chamber;
Above-mentioned valve body is by making than the high material of above-mentioned valve seat wear-resisting property, and have can interlock in moving up and down of above-mentioned float and above-mentioned relatively sealing surface of seat slides and then valve body sealing surface that can the above-mentioned valve seat of switch, the cross section of the seamed edge of above-mentioned valve body sealing surface is right angle or acute angle.
6. float type Automatic steam trap Trap as claimed in claim 5 is characterized in that,
Above-mentioned valve body is arranged at above-mentioned float in the following manner, that is, when the above-mentioned relatively sealing surface of seat of this valve body slided, its Vertical direction with respect to above-mentioned sealing surface of seat was swung, and can make above-mentioned seamed edge be connected to above-mentioned sealing surface of seat.
7. as any described float type Automatic steam trap Trap in the claim 1,5 or 6, it is characterized by, above-mentioned valve body is made by stainless steel, other metals or ceramic-like materials, when above-mentioned valve body is made by stainless steel or other metals, above-mentioned valve seat is made by carbon, when above-mentioned valve seat was made by stainless steel or other metals, above-mentioned valve body was made by ceramic-like materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003170029A JP4615195B2 (en) | 2003-06-13 | 2003-06-13 | Float type steam trap |
| JP170029/2003 | 2003-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1573203A CN1573203A (en) | 2005-02-02 |
| CN100373090C true CN100373090C (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100455624A Expired - Fee Related CN100373090C (en) | 2003-06-13 | 2004-06-07 | Floater type steam trap |
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| JP (1) | JP4615195B2 (en) |
| CN (1) | CN100373090C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4739724B2 (en) * | 2004-10-21 | 2011-08-03 | 株式会社本山製作所 | Float type steam trap |
| CN103133858B (en) * | 2012-11-14 | 2016-01-20 | 成都凯天电子股份有限公司 | High-pressure lever ball float type steam trap |
| CN110185837B (en) * | 2018-02-23 | 2021-03-02 | 浙江三花智能控制股份有限公司 | Floating ball control valve |
| CN110006181B (en) * | 2019-04-10 | 2021-04-16 | 淮安信息职业技术学院 | Drainage liquid level control auxiliary device of high-pressure heater |
| CN113405015B (en) * | 2021-06-25 | 2023-04-28 | 华能秦煤瑞金发电有限责任公司 | Drain valve based on safety improvement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2117056A (en) * | 1935-02-15 | 1938-05-10 | American Distr Steam Company | Steam trap |
| US4757837A (en) * | 1986-07-17 | 1988-07-19 | Compagnie Parisienne De Chauffage Urbain | Separating valve for discharging the liquid phase of a two-phase fluid |
| JP2002195492A (en) * | 2000-12-28 | 2002-07-10 | Motoyama Eng Works Ltd | Float type steam trap |
| CN1409043A (en) * | 2001-09-28 | 2003-04-09 | 李忠馀 | Mechanical nano steam trap |
-
2003
- 2003-06-13 JP JP2003170029A patent/JP4615195B2/en not_active Expired - Fee Related
-
2004
- 2004-06-07 CN CNB2004100455624A patent/CN100373090C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2117056A (en) * | 1935-02-15 | 1938-05-10 | American Distr Steam Company | Steam trap |
| US4757837A (en) * | 1986-07-17 | 1988-07-19 | Compagnie Parisienne De Chauffage Urbain | Separating valve for discharging the liquid phase of a two-phase fluid |
| JP2002195492A (en) * | 2000-12-28 | 2002-07-10 | Motoyama Eng Works Ltd | Float type steam trap |
| CN1409043A (en) * | 2001-09-28 | 2003-04-09 | 李忠馀 | Mechanical nano steam trap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005003170A (en) | 2005-01-06 |
| CN1573203A (en) | 2005-02-02 |
| JP4615195B2 (en) | 2011-01-19 |
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