CN108591813A - Differential pressure type steam trap - Google Patents

Abstract

A kind of differential pressure type steam trap disclosed by the invention, it is desirable to provide without architectural limitation, volume small displacement is big, can provide the drain valve of multiple mounting modes.The present invention is achieved by the following technical programs：Valve deck (1) removably connects firmly the input end in valve body (2)；T shapes air bleeder valve (4) and its gland (5) there are one being connected firmly on side runner on valve body, there are one the valve metal films (6) that can be freely moved between T shapes air bleeder valve and gland；Valve deck end face is fixedly connected with a tailstock blanking cover (9) to end face, axle sleeve (3) and valve stem sleeve (11) are set before being fixedly connected with respectively on valve body and tailstock blanking cover, flap (15) is mounted on two axle sleeves and can be for linear motion, bowl-type slip ring (13) there are one being connected firmly in the middle part of flap, there is a compressed spring between bowl-type slip ring and valve body, spring pocket is in bowl-type slip ring cylinder outer circle, and there are one connect firmly the jacket casing (14) on valve body on bowl-type slip ring excircle.

Description

Differential pressure type steam trap

Technical field

The present invention relates to one kind being widely used in the high middle pressure steam equipment such as oil, chemical industry, printing and dyeing, pharmacy, weaving, food system The steam trap of system, in particular for being used in equipment from jet chimney and steam, automatic-discharging condensed water and incoagulability The valve of gas, relate generally to high pressure, huge discharge steam trap.

Background technology

Steam trap is as the use equipment in industrial production vapour system, for ensureing safety, the section of technical process It can, efficiently run and play a very important role.Drain valve is for that in steam pipe network and equipment, can be automatically drained out condensation Water, air and other incondensable gases, and the valve for the steam leakage that blocks water.The basic role of drain valve is will be in vapour system Condensed water, air and carbon dioxide gas are discharged as early as possible；It is automatically prevented from the leakage of steam to the maximum extent simultaneously.Steam pipeline The purpose that drain valve is arranged on line is to prevent from steam pipeline inner product coacervation from bearing water water hammer accident occurs and is done with vapour end Saturated vapor.The various types for discharging drain valve, the performance having nothing in common with each other.In steam pipeline, steam uses equipment, steams Generated condensed water in the technical process such as vapour heat traced pipeline, it is necessary to it excludes as early as possible, otherwise, swiftly flowing Steam Actuation product The condensed water of knot together, makes condensed water be rushed in tube wall and valve and steam using strong shock, generation is carried out in equipment It is often prodigious to hit power, this phenomenon is known as water attack.When water attack is very strong, can cause at pipeline turning and valve damage or broken It is bad.Condensed water accumulates in the consequence that heat exchange efficiency can be largely effected in equipment, or even cause heating process that can not carry out simultaneously.And The effect of steam trap be exactly the automatic condensed water for excluding constantly to generate in jet chimney and equipment, air and it is other can not be cold Solidifying property gas, while preventing steam from escaping again, it is a kind of energy-conserving product for ensureing various steaming plant devices and effectively running.

It counting according to relevant department of China, whole nation steam trap owning amount is about 432.4 ten thousand at present, about 80% The requirement that existing national standards steam loss is less than 3% is not achieved in product, and slip is mostly 10% or so.The pattern of drain valve Very much, by the difference of operation principle, the drain valve of three types is produced according to three principles.Drain valve be classified as mechanical type, Heat static force type, heat power type.Wherein, mechanical type drain valve is defended the variation of height by condensation aqueous in steam trap and is moved Make, the keying of valve is realized using the height of condensed water liquid level.The first major class of mechanical drain valve is Free Float Type Steam Trap. Mechanical type drain valve includes：Float-ball type：Float is closed hollow ball.Its degree of supercooling is small, not by operating pressure and temperature The influence of variation has water to arrange, and water is not stored in heating equipment, and displacement is big.Belonging to such drain valve has inversion type With float-ball type etc..Heat static force type drain valve has bellows-type, bellows-type, double-metal sheet type.Bellows-type, bellows-type sensing element For bellows or print cartridge, inside is filled with volatile liquid, and double-metal sheet type sensing element is bimetal leaf.Heat static force type drain valve It is acted by the variation of fluid temperature, causes the modification of temperature-sensing element or expansion to drive valve using the temperature difference of steam and condensed water Heart opening/shutting valve.Heat static force type drain valve is acted by the variation of the thermodynamic property of liquid, its degree of supercooling is bigger, Always there is condensed water in high temperature before valve, displacement is small.Another principal mode of mechanical drain valve is inverted bucket steam trap. Inverted bucket steam trap can be used in the application of high pressure.Air in reverse bucket is such as not excluded for that the normal work of drain valve will be hindered Make and the exhaust of inverted bucket steam trap very slowly thus for occasion existing for large quantity of air just need individually hot static(al) arrange Air valve is no, and it will cause equipment ponding to influence heat transfer efficiency.Many inverted bucket steam traps need to configure a check-valves to prevent Water seal (flass) is lost in pressure suddenly change or overheat.Water seal ensures that inverted bucket steam trap avoids leaked steam One of key.All mechanical steam drain valves have certain condensed water, therefore this after drain valve closing in valve body Kind drain valve may be by the harm freezed, if valve body needs to keep the temperature in the outdoor environment of low temperature.Condensed water arrives Enter well-bucket in up to drain valve and in interior steam and generates that steam inside reverse bucket is constantly cooling, the not portion of the gas vent in reverse bucket Form water seal.The weight buoyancy of reverse bucket itself makes well-bucket rise valve pass, and is overflowed from gas vent, while cold disconnected by air It is expelled to drain valve, so that valve is opened condensed water and just closes along hanging upside down.Condensate enter reverse bucket valve again topping portion due to row Stomata very little bucket is discharged.It is continuous to open entire working cycles.Exhaust is slower, therefore often may require that the individual air bleeding valve of installation. Thermostatic steam trap is according to the temperature difference between steam and supercooled state condensed water or air-steam mixture come work.It It can be used for allowing equipment existing for cold bench condensed water can utilize the sensible heat energy in condensed water.The shortcomings that hot static(al) steam trap It is：Condensed water is discharged less than vapo(u)rous temperature, therefore cannot be used for requiring discharging the heating equipment of condensed water immediately.In order to The ponding of heat transmission equipment is avoided, the cooling tube of rice must be installed before hot static(al) drain valve.Heat power steam trap is (at home again Referred to as Shemostatic team trap) it is at home and abroad widely used even due to the features such as its is compact-sized, principle is simple, reliable operation Reach by the degree of " abuse ".Thermodynamic drain valve is according to " power " pressure difference between low speed condensed water and high speed flash-off steam Carry out work, only there are one movable part-stainless steel disks for whole work process.It has the good power of fastening and can prevent cold Condensate, which is back to equipment, ensures the maximum efficiency of equipment.Since heat power steam trap requires the pressure into drain valve Not less than certain value, while the back pressure of drain valve, generally not above inlet pressure, otherwise drain valve cannot normal work Make.In addition thermodynamic drain valve is intermittent discharge.Therefore thermodynamic drain valve cannot be generally used in efficiency of heating surface height, together When the heat exchanger with Temperature-controlled appliance application.Heat power type steam trap by steam and condensed water by when flow velocity and volume The difference of variation makes valve metal film generate different pressure differences up and down, drives valve metal film controlled valve.Thermodynamic trap structure Simply, resistance to water attack, discharge capacity are small.Belong to such drain valve, abacus formula, pulsed etc..

Heat static force type drain valve and heat power type steam trap are all only applicable to the operating mode of small displacement, it is desirable that displacement is in 30T/ The operating mode of h or more, all selects lever floating ball type draining valve.The structure of lever float ball type steam drain valve is to utilize lever principle, An intermediate fulcrum, one end is by the pressure of the different generation of pressure inside and outside apopore, and the other end is by floating ball in condensed water The buoyancy of middle generation.The differential pressure that the prior art uses answer valve inverted bucket steam trap, is utilize condensed water and steam close The operation principle of difference is spent, internal structure is to connect reverse bucket by lever system, and reverse bucket is the liquid level for overcoming steam pressure switch Sensing element.The unlatching of usual drain valve valves needs to meet following formula, and the pressure at area × apopore of apopore × Length of the lever one end to length ＜ (gravity of buoyancy-floating ball of floating ball) × lever other end to fulcrum of fulcrum.From above Formula is it is found that will make valve opening, then the buoyancy of floating ball has to be larger than the gravity of floating ball.Which limits the wall thickness of floating ball cannot Unconfined increase, i.e. floating ball bearing capacity are limited, then the maximum working pressure of lever float ball type steam drain valve is limited. Keep valve displacement big, then it is necessarily big to be discharged hole area.This requires the volume of floating ball is big, and lever is to the length of fulcrum Degree will be grown, this causes the volume of lever floating ball type draining valve all very big.

The use of drain valve is other than correctly selecting, if installation and piping are improper, drain valve also can be failure to actuate or miss Steam.Waste of energy.Condensed water in drain valve is pushed outside condensed water dump valve by the difference of upstream pressure and downstream pressure , if drain valve exit resistance is very big, i.e., back pressure is very big, then drain valve fore-aft motion pressure difference will become smaller.Drain valve Displacement volume is also just reduced.Under normal circumstances, drain valve is all mounted in the position less than condensed water device for transferring.But such as Fruit is want drain valve being mounted on higher than in place of condensed water device for transferring, then need to install the connector that rises, ability in the front of drain valve Condensed water is set successfully to flow into drain valve.The connector that rises is alternatively referred to as " suction connector ".Whether drain valve installation is suitable, right The normal work of drain valve and the production efficiency of equipment, which have, directly to be had an impact.Install drain valve must by regular installation requirement, Condensed water flow direction is consistent with drain valve installation arrow mark, just drain valve and equipment can be made to reach optimum working efficiency.Such as peace Dress poor direction can lead to the abrasion, failure and leaked steam of drain valve.Mechanical type drain valve will be horizontally mounted.Heat static force type Drain valve requires to be horizontally mounted in principle, but can also be installed in vertical direction.Heat power type in addition to pulsed must be horizontally mounted, Disc type may be mounted in any angle.In the discharge of condensed water, Inverted bottle type and collar plate shape drain valve are all that interval is arranged Put condensed water.Floating-ball type is continuously to discharge, and it is also likely to be intermittent discharge that heat static force type, which may be continuous according to load difference,.When When the load of Inverted bottle type drain valve is minimum, due to tiny drop effect, condensed water also can be continuously discharged.Steam trap cannot It is installed in series, one meter or more uninsulated supercooling tube is needed before heat static force type drain valve, other forms drain valve will lean on as possible Nearly equipment.Although heat power steam trap can work in any installation position, actually due to the different work of each equipment Situation can lead to system ponding.When system loading reduces, pressure reduction in heat exchanger and it is insufficient, then condensed water elimination Go out, to make equipment generate ponding, water hammer phenomena such as.Inverted bucket steam trap is because sky cannot be excluded rapidly in some applications Gas can cause preheating time to lengthen and equipment ponding.If bimetal drainage valve is installed in the system of back pressure, the change of back pressure The discharge of condensed water can be influenced by changing, and temperature back pressure increases, and exhaust temperature declines the possibility that can increase equipment ponding.It is mechanical hydrophobic Valve, which is installed on outdoor low temperature environment, should be added on heat preservation.Following reason may cause the failure of drain valve, such as all machines The same steam trap of tool mechanism also inevitably encounters the problem of abrasion and the function that can not bring into normal play.The impurity of pipeline, The water hammer of system or corrosion etc. can all cause drain valve fatal damage.In addition if drain valve type selecting, Rig up error are same It can make drain valve cisco unity malfunction.The failure of steam trap shows as leaked steam or can not drain.Trap leaking is steamed Vapour can cause the waste of the energy, can not ensure that stable pressure and temperature increases the pressure of condensing water conduit and influences miscellaneous equipment Working performance erosion etc. is caused to equipment.And the blocking of drain valve can cause equipment ponding that temperature is caused to control incorrect, damage Bad product quality, reduction thermal output, water hammer damage equipment etc..Lever float ball type steam drain valve belongs to mechanical drain valve, is The difference of the buoyancy and gravity that are generated according to floating ball is turned on or off valve, gravity be vertically downward, floating ball be vertically to On, the mounting means which results in steam trap product is fixed, to meet different mounting means, must be developed Meet duty requirements except the consistent a variety of similar products of the different outer other performances of mounting means.

Invention content

In view of the deficiencies of the prior art mentioned above, it is high to provide a kind of operating pressure for the purpose of the present invention, and body is small and discharge capacity Greatly, mounting means flexibility and changeability is capable of the differential pressure type steam trap of multi-faceted installation.

The purpose of the present invention can be reached by the following measures.A kind of differential pressure type steam trap, including：Sealing is fixed Valve body 2 between tailstock blanking cover 9 and valve deck 1, and it is allowed to the sealed pressure vessel to be formed, which is characterized in that with level The valve deck 1 of intake channel forms valve chamber and its 90 ° of elbow media of formation by the docking of stud nut 16 on 2 ring flange of valve body Circulation road connects blind hole outlet cylinder vertical outlet passage by valve chamber, is connected by media storage chamber on the right side of vertical outlet passage Back pressure separate cavities 17 connect tailstock blanking cover 9；One flap 15 with valve rod by vertical outlet passage radial opening valve and The bowl-type slip ring 13 in media storage cavity is arranged in it, stretches into tailstock blanking cover 9 and forms differential pressure component, 15 valve rod of flap is in level It is for linear motion along axial line under the action of intake channel high-pressure, and 15 valve rod compressed spring 12 of flap and its with band method Blue disk vertical outlet passage outlet, is radially directed towards under the effect of medium shunt hole 18 of back pressure separate cavities 17, passes through flap 15 and bowl 13 forced area difference of shape slip ring and the pressure difference generated control the open and close of vertical outlet passage radial opening valve.

The technology of the present invention has the following advantages that compared with prior art：

1. operating pressure is high.The present invention is set using a flap 15 with valve rod by vertical outlet passage radial opening valve The spring base set and its it is followed by jacket casing 14, stretches into 9 tailstock of tailstock blanking cover composition differential pressure component, bowl-type is connected firmly by 15 rear of flap Slip ring 13, bowl-type slip ring 13 connect firmly on 15 valve rod of flap, and together by being mounted in jacket casing 14, are slided along jacket casing inner wall, Flap 15 is for linear motion along axial line in horizontal inlet channel entrance high-pressure, and in the compressed spring of 15 spring base of flap 12 and its with vertical outlet passage export, be radially directed towards back pressure separate cavities 17 medium shunt hole 18 act under, by flap with The area discrepancy of bowl-type slip ring stress constitutes pressure difference, can mutually transmit born pressure, it is strong that water resistant hits ability.According to both ends The difference of pressure, bowl-type slip ring 13 and flap 15 connect firmly body sliding in jacket casing 14, by pressure difference opening come control valve It opens and closes, being turned on or off for valve is made not influenced by gravity, structure can bear high pressure, overcome existing The restricted problem of maximum working pressure of technology lever float ball type steam drain valve can be applied to high pressure operating mode well.

2. displacement is big.The present invention uses the flap 15 with valve rod, the flap of valve rod to pass through vertical outlet passage radial direction The spring base and its be followed by jacket casing 14 that opening valve is arranged, stretch into 9 tailstock of tailstock blanking cover composition differential pressure component, and circular cone flap is reversed It seals vertical outlet passage radial opening valve and generates pressure difference, main valve is opened and obtains huge discharge, and bowl-type slip ring 13 is close to tail Seat 9 end face of blanking cover is by the pressure medium introduced from medium shunt hole 18, and action is accurate, action noise is small, water resistant is hit, discharge capacity Greatly.Area of the bowl-type slip ring 13 close to 9 end face of tailstock blanking cover is bigger than the entrance latus rectum of valve, and displacement is ensure that from structure Greatly.The open area of flap 15 is smaller than valve inlet drift diameter area, can continuously exclude condensed water, and condensed water can be flowed into successfully Drain valve, water adverse current when can prevent steam from stopping in gutter break down to drain valve, and not only operating pressure is high, and Discharge capacity is big, and it is good to exclude air performance.Flow of media channel is similar to 90 ° of elbows, and flow resistance after unlatching is small to condensed water Yield strong applicability, can intermittent drainage, steam-water separation is reliable, not leaked steam, will not freeze, controllable condensation water temperature, leakage Vapour amount meets the requirement that national standard steam loss is less than 3%,.

3. mounting means flexibility and changeability.The present invention uses the valve deck 1 with horizontal inlet channel to lead to with vertical outlet The valve body in road, to reach valve can make up it is left go out under, it is left into above go out, it is left go out into side, it is right go out under, it is right into above go out, it is right Go out into side, a variety of connection types that the enterprising right side goes out, an enterprising left side goes out, enterprising side goes out, this multiple mounting modes pass through by pressure difference The opening and closing for carrying out control valve make being turned on or off for valve not influenced by gravity, meet various different operating modes Install and use.The regular installation of arrow mark must be flowed to by a condensed water, can just made by avoiding prior art drain valve Drain valve and equipment reach the limitation of optimum working efficiency, and need to install the connector that rises in the front of drain valve, can just make cold Condensate can successfully flow into the limitation of drain valve.

4. small.The present invention is fixed on the valve body 2 between tailstock blanking cover 9 and valve deck 1 using sealing, and is allowed to be formed Sealed pressure vessel, structure is extremely compact, working media from 1 entrance of valve deck flow into, from valve body 2 flow out, it is similar to flow through channel In 90 ° of elbows, intermediate only there are one flaps 15, and without other any mechanisms, the lever float ball type for being compared to huge discharge is dredged The volume of water valve can more meet compact installation space with regard to much smaller.

The problem of requiring pressure high in conclusion the present invention solves, and requiring discharge capacity big operating mode.The present invention also overcomes Mechanical drain valve can only have a kind of the shortcomings that mounting means can be there are many various mounting means.

Description of the drawings

In order to be expanded on further rather than the above-mentioned realization method of patent of the present invention is limited, below in conjunction with the accompanying drawings to the present invention Patent is described further, but therefore patent of the present invention is not limited among the range.All these designs should regard For patent disclosure of that of the present invention and protection domain.

Fig. 1 is differential pressure type steam trap of the present invention.

Fig. 2 is the sectional view of Fig. 1.

In figure：1 valve deck, 2 valve bodies set axle sleeve, 4T shape air bleeder valves, 5 glands, 6 valve metal films, 7 cappings, 8 sealings before 3 Pad, 9 tailstock blanking covers, 10 valve stem sleeves, 11 nuts, 12 compressed springs, 13 bowl-type slip rings, 14 jacket casings, 15 flaps, 16 stud spiral shells Mother, 17 back pressure separate cavities, 18 medium shunt holes, 19 blind holes export cylinder.

Specific implementation mode

Refering to fig. 1, Fig. 2.In the embodiment described below, a kind of differential pressure type steam trap, including：Sealing is fixed on Valve body 2 between tailstock blanking cover 9 and valve deck 1, and it is allowed to the sealed pressure vessel to be formed.Valve deck with horizontal inlet channel 1 forms valve chamber and its 90 ° of elbow medium flow channels of formation by the docking of stud nut 16 on 2 ring flange of valve body, by valve chamber Blind hole outlet cylinder vertical outlet passage is connect, is connected by the back pressure separate cavities 17 that media storage chamber is connected on the right side of vertical outlet passage Connect tailstock blanking cover 9；One flap 15 with valve rod is deposited by vertical outlet passage radial opening valve and its setting in medium Bowl-type slip ring 13 in storage chamber body stretches into tailstock blanking cover 9 and forms differential pressure component, and 15 valve rod of flap is in horizontal inlet channel high pressure pressure It is for linear motion along axial line under the action of power, and lead in 15 valve rod compressed spring 12 of flap and its with flanged disk vertical outlet Road exports, and is radially directed towards under the effect of medium shunt hole 18 of back pressure separate cavities 17, passes through flap 15 and 13 stress surface of bowl-type slip ring The pressure difference that product moment is different and generates controls the open and close of vertical outlet passage radial opening valve.Valve deck 1 removably connects firmly In the input end of valve body 2, working media is flowed into from 1 entrance of valve deck, from valve body 2 perpendicular to the exit passageway stream of above-mentioned access road Go out.

The T shapes air bleeder valve 4 there are one runner built in communication seals pressure vessel is connected firmly on the upside of 2 tail portion shell of valve body, A valve metal film that can be freely moved 6, valve metal film 6 are filled between 5 inner cavity lower projection of T shapes air bleeder valve 4 and gland 5 inner cavity boss of gland is fixed on the end of T shapes air bleeder valve 5 on annular groove, the steam vapour that being formed prevents air gas stifled is locked.It steams Vapour vapour is locked to be sealed by 7 spiral shell of capping of 2 shell of valve body.The end of T shapes air bleeder valve 5 is formed with slanted channel to annular groove, and slanted channel is logical Cross 2 medium channel of valve body connection back pressure separate cavities 17.

The tail end of valve body 2 is connected firmly there are one the tailstock blanking cover 9 for carrying blind hole cylinder, and blind hole wound packages coordinates flap connecting rod equipped with dynamic Valve stem sleeve 10,9 inner side end center stepped hole of tailstock blanking cover is equipped with axial connection the rear of valve stem sleeve 10 and sets axle sleeve 11. The component similar to 90 ° of elbow, the structure are formed in the sealed pressure vessel formed between 1 import of valve body 2 and valve deck The blind hole outlet cylinder for extending radially out 2 shell of valve body is formed on part, the radial direction of blind hole outlet cylinder is formed with switch flap 15 Axle sleeve 3 is set before the conical hole and assembly flap Step Shaft of interior centrum, side passes through 2 aft end of valve body in the blind hole Exported Cone body The valve deck 1 that mouth connects firmly forms the media storage chamber of sealed pressure vessel storage medium, media storage cavity and blind hole Exported Cone Body is connected, and a medium side stream passages parallel with upper part inner wall are formd with the sealed pressure vessel inner wall.It is situated between Matter side runner tail portion is equipped with bowl-type slip ring 13, and the spring base of assembly compressed spring 12 is formed in the middle part of the bowl body of bowl-type slip ring 13, Compressed spring 12 be assemblied in spring base and before set 3 cylinder of axle sleeve between, be formed with slip ring on the excircle of 13 jacket casing 14 of bowl-type slip ring. Blind hole outlet cylinder switch hole is sequentially passed through with the valve rod that flap 15 is connected, preceding axle sleeve 3 set, connect 13 rear end of bowl-type slip ring It is rear set axle sleeve 11 and its valve stem sleeve 10 is fixed in the blind hole cylinder for stretching out 9 end face outside of tailstock blanking cover, make in fluid media (medium) With lower for linear motion along its axial line.Compressed spring 12 provides the predetermined value of a control 15 valve rod closing forces of flap.

Bowl-type slip ring 13 is assemblied in the rear end of jacket casing 14, and at least three annular grooves, center are formed on the circumference of bowl-type slip ring 13 It is formed with the through-hole of assembly 15 valve rod of flap, valve rod sets axle sleeve 3, valve before sequentially passing through the assembly of vertical outlet passage radial opening The connected nut 11 of 13 central through hole of bowl-type slip ring, 13 backside of bowl-type slip ring and valve stem sleeve 10, composition one set axis before passing through Set 3,13 spring base central boss of valve bowl-type slip ring are set with compressed spring 12, are moved in a straight line in the axial direction in jacket casing 14 Component.

Bowl-type slip ring 13 is close to 9 end face of tailstock blanking cover by the pressure medium introduced from medium shunt hole 18, bowl-type slip ring 13 area close to 9 end face of tailstock blanking cover is bigger than the entrance latus rectum of valve, and the open area of flap 15 is than valve inlet latus rectum face Product is small.

Storage medium enters T shapes air bleeder valve 4 along the medium side stream passages of 90 ° of elbows of vertical outlet passage sealing end Axial passage drives the valve metal film 6 covered thereon, it is made to be moved between T shapes air bleeder valve 4 and gland 5 cover space, To open or close the axially extending bore of T shapes air bleeder valve 4, control enters the medium of back pressure separate cavities 17 from slanted channel Flow.

14 external cylindrical surface of jacket casing is formed with the necking down for being directed toward 13 backside gap of bowl-type slip ring, is formed by the connection of necking down slot and is directed toward 13 backside gap of bowl-type slip ring is largely stored in the medium in the valve chamber that valve body 2 is formed with valve deck 1 through vertical outlet passage radial direction Medium shunt hole 18 flows into the cavity for the back pressure separate cavities 17 that bowl-type slip ring 13 is formed with 9 end face of tailstock blanking cover, in medium Under effect, 15 valve rod of flap is moved with bowl-type slip ring 13 along 3 axis direction of axle sleeve is preceding set, while storage medium is from 15 valve of flap Aperture flows into 2 vertical outlet passage of valve body.

It is the description to the present invention and its embodiment provided to the engineers and technicians in familiar field of the present invention above, These descriptions should be considered to be illustrative and not restrictive.Engineers and technicians can be accordingly in invention claims Thought is done specific operation and is implemented, without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right It makes a variety of changes in the form and details.Above-mentioned these are regarded as coverage of the invention.

Claims (10)

1. a kind of differential pressure type steam trap, including：Sealing is fixed on the valve body (2) between tailstock blanking cover (9) and valve deck (1), And it is allowed to the sealed pressure vessel to be formed, which is characterized in that the valve deck (1) with horizontal inlet channel passes through valve body (2) method Stud nut (16) docking on blue disk forms valve chamber and its 90 ° of elbow medium flow channels of formation, and blind hole outlet is connect by valve chamber Cylinder vertical outlet passage, vertical outlet passage right side connect tailstock by the back pressure separate cavities (17) that media storage chamber is connected and block up It covers (9)；One flap (15) with valve rod is by vertical outlet passage radial opening valve and its is arranged in media storage chamber Bowl-type slip ring (13) in body stretches into tailstock blanking cover (9) composition differential pressure component, and flap (15) and its valve rod are in horizontal inlet channel It is for linear motion under the action of high-pressure, and in flap (15) valve rod compressed spring (12) and its it is radially directed towards back pressure separate cavities (17) it under medium shunt hole (18) effect, is generated by flap (15) forced area difference different from bowl-type slip ring (13) Pressure difference controls the open and close of vertical outlet passage radial opening valve.

2. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Valve deck (1) is removably connected firmly in valve The input end of body (2), working media is flowed into from valve deck (1) access road, from valve body (2) perpendicular to the exit passageway of access road Outflow.

3. as described in claim a kind of differential pressure type steam trap, it is characterised in that：It is connected firmly on the upside of the shell of valve body (2) tail portion There are one the T shapes air bleeder valves (4) of runner built in communication seals pressure vessel, in T shapes air bleeder valve (4) and gland (5) A valve metal film that can be freely moved (6) is filled between the lower projection of inner cavity, it is convex that valve metal film (6) is fixed on gland (5) inner cavity The end of platform and T shapes air bleeder valve (5) forms the steam vapour lock for preventing air gas stifled on annular groove, and steam vapour is locked by valve body (2) Capping (7) spiral shell of shell seals.

4. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Valve body (2) and valve deck (1) import it Between component similar to 90 ° of elbow is formed in the sealed pressure vessel that is formed, be formed on the component and extend radially out valve body (2) shell blind hole export cylinder, blind hole outlet cylinder radial direction be formed with switch flap (15) interior centrum conical hole and Axle sleeve (3) is set before assembly valve rod central stepped axis, side is connected firmly by valve body (2) tail portion port in the blind hole Exported Cone body Valve deck (1) forms the media storage chamber of sealed pressure vessel storage medium, and media storage cavity is linked to be with blind hole outlet cylinder One, a medium side stream passages parallel with upper part inner wall are formd with the sealed pressure vessel inner wall.

5. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Storage medium is along vertical outlet passage Medium side stream passages on 90 ° of elbow faces of sealing end enter T shapes air bleeder valve (4) axial passage, drive the gold covered thereon Belong to valve block (6), so that its valve metal film (6) is moved between T shapes air bleeder valve (4) and gland (5) capping space, to open Or the axially extending bore of T shapes air bleeder valve (4) is closed, control enters the medium flow field of back pressure separate cavities (17) from slanted channel Amount.

6. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Bowl-type slip ring (13) is assemblied in jacket casing (14) rear end, at least three annular grooves are formed on the circumference of bowl-type slip ring (13), and center is formed with the logical of assembly flap (15) valve rod Hole, valve rod sets axle sleeve (3) before sequentially passing through the assembly of vertical outlet passage radial opening, valve bowl-type slip ring (13) center leads to Hole, bowl-type slip ring (13) backside connected nut (11) and valve stem sleeve (10), composition one set axle sleeve (3), valve before passing through The compressed spring (12) being set between bowl-type slip ring (13) centering spring seat moves in a straight line in the axial direction in jacket casing (14) Component.

7. as described in claim a kind of differential pressure type steam trap, it is characterised in that：There are one the tail end of valve body (2) connects firmly Tailstock blanking cover (9) with blind hole cylinder, valve stem sleeve (10) of the blind hole wound packages equipped with dynamic cooperation flap connecting rod, tailstock blanking cover (9) Inner side end center stepped hole is equipped with axial the rear of connection valve stem sleeve (10) and sets axle sleeve (11).

8. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Medium side runner tail portion is equipped with bowl-type Slip ring (13), the bowl body middle part of bowl-type slip ring (13) are formed with the spring base of assembly compressed spring (12), compressed spring (12) assembly Spring base and before set axle sleeve (3) cylinder between, be formed with slip ring on the excircle of bowl-type slip ring (13) jacket casing (14).

9. as described in claim a kind of differential pressure type steam trap, it is characterised in that：The valve rod being connected with flap (15) Sequentially pass through blind hole outlet cylinder switch hole, it is preceding set axle sleeve (3), connection bowl-type slip ring (13) rear end it is rear set axle sleeve (11) and its Valve stem sleeve (10) is fixed in the blind hole cylinder for stretching out tailstock blanking cover (9) end face outside, along its axle center under fluid media (medium) effect Line is for linear motion.

10. as described in claim a kind of differential pressure type steam trap, it is characterised in that：Compressed spring (12) provides a control The predetermined value of flap (15) valve rod closing forces processed.