CN101260943A - Low pressure drop high-temperature gas changing-over valve - Google Patents
Low pressure drop high-temperature gas changing-over valve Download PDFInfo
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- CN101260943A CN101260943A CNA2008100667236A CN200810066723A CN101260943A CN 101260943 A CN101260943 A CN 101260943A CN A2008100667236 A CNA2008100667236 A CN A2008100667236A CN 200810066723 A CN200810066723 A CN 200810066723A CN 101260943 A CN101260943 A CN 101260943A
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Abstract
The invention relates to a low pressure drop high temperature gas reversing valve, comprising a manufactured valve body with an air inlet and two air outlets, and the section surfaces of the two air outlets are equal to the air inlet; a rotatable valve rod is arranged in the valve body, the rotation center line of the valve rod is positioned on the symmetrical neutral surface of the center lines of the two air outlets, one end of the which extends out of the valve body; the valve body is connected with two valve covers; sealing surfaces matched with each other and vertical to the center lines of the air outlets are arranged between the valve covers and the air outlets; a projection angle between the sealing surfaces of the two valve covers on the plane vertical to the rotation center shaft of the valve rod is less than or equal to a complement angle of the projection angle between the center lines of the two air outlets; therefore, the valve rod can drive the two valve covers to rotate under driving of an outside force, one corresponding air outlet is sealed, and the other valve cover becomes one part of the sidewall of a gas passage, the flow resistance of the gas in the valve body is reduced, thus the low pressure drop high temperature gas reversing valve with small pressure loss and excellent sealing performance in high temperature environment is obtained.
Description
Technical field
The present invention relates to a kind of high-temperature gas valve, more particularly, relate to a kind of high-temperature gas changing-over valve of low pressure loss.
Background technique
In the prior art, traditional valve generally includes valve body, valve gap and rotatingshaft, comprises suction port and air outlet on the valve body, and rotatingshaft is installed in the rotation hole of valve gap, and rotatingshaft rotates the opening and closing that can realize valve body.But this valve body should not use for the high-temperature gas that the pressure drop requirement is arranged, and first pressure drop of flow is big, and the energy loss of gas is bigger when flowing, and it two is that the valve of good seal performance can not be used for hot environment at present.
Usually adopt the high-temperature ball valve of metal hard-sealing when commutating control for high-temperature gas.When needs commutate to high-temperature gas, usually adopt following tracheae linkage structure, promptly utilize a three-way pipe that gas is divided into two branch roads, on two branch roads, resistant to elevated temperatures ball valve is set respectively, by controlling the spool of two ball valves respectively, realize control to each tracheae branch road flow.But there is big resistance in this design for the gas that flows in pipeline, make gas energy loss when mobile very big, causes pressure drop big; And the structure of ball valve, processing and cooperation are all very complicated.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective that the high-temperature gas changing-over valve door of prior art exists, provides that a kind of pressure loss is little, the high low pressure drop high-temperature gas changing-over valve of sealability in the hot environment.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of low pressure drop high-temperature gas changing-over valve, comprise valve body, described valve body one end is provided with a suction port, and the other end is provided with two air outlets, and the sectional area of described two air outlets all is set to equate with the sectional area of suction port; Be provided with rotating valve rod in the described valve body, the rotary centerline of described valve rod is positioned on the symmetrical neutral surface of two air outlet center lines, and the one end extends to the valve body outside; Be connected with the valve gap that two energy rotate around valve rod in valve body with valve rod on the described valve rod; Be provided with mutual coupling between described valve gap and the corresponding air outlet and perpendicular to the sealing surface of this gas outlet center line; On the plane perpendicular to the valve rod rotary middle spindle, the projection angle on described two valve gaps between the sealing surface is less than or equal to the complementary angle of projection angle between the described two air outlet center lines.
In low pressure drop high-temperature gas changing-over valve of the present invention, the center line of described suction port is with two air outlet center line place plane parallel or overlap.
In low pressure drop high-temperature gas changing-over valve of the present invention, described valve gap comprises being movably connected on the described valve rod and matching with described air outlet and forms the end cover of described sealing surface, the sealing surface of described end cover is set to the O-ring conical surface, and the sealing surface of described air outlet is set to the sealing sphere that is complementary with the described O-ring conical surface.
In low pressure drop high-temperature gas changing-over valve of the present invention, place, described air outlet is provided with seal ring and seal ring is fixed on the locking nut at place, air outlet, and described sealing sphere is arranged on the seal ring end towards end cover.
In low pressure drop high-temperature gas changing-over valve of the present invention, the end cover of described valve gap and described valve rod joint are provided with through hole, described valve gap comprises that also tail end passes described through hole and is fixedly connected on connecting bolt on the valve rod, and is fixed on the end cover and with the capping in described through hole of the head seal of described attachment screw.
In low pressure drop high-temperature gas changing-over valve of the present invention, described valve rod comprises rotating shaft and the connecting rod that is fixed together, one end of described rotating shaft extends to the valve body outside, one end of described connecting rod is fixed on the rotating shaft middle part, and its other end is fixedlyed connected with the connecting bolt afterbody of described two valve gaps respectively.
In low pressure drop high-temperature gas changing-over valve of the present invention, be positioned at the through hole between described capping and the end cover and be provided with chamber, be set to the spherical crown that is complementary with described through hole with the joint, screw section of described connecting bolt on the described connecting rod for the head movement of described connecting bolt.
In low pressure drop high-temperature gas changing-over valve of the present invention, the angle between the described two air outlet center lines is set to 30～80 degree, and the angle between the seal face of described two valve gaps is set to 5～60 degree.
In low pressure drop high-temperature gas changing-over valve of the present invention, the center line of described suction port also is arranged on the symmetrical neutral surface of two air outlet center lines.
In low pressure drop high-temperature gas changing-over valve of the present invention, the rotary centerline of described valve rod is vertical with plane, center line place, two air outlets.
Implement high-temperature gas changing-over valve of the present invention, have following beneficial effect:, so can make the gas that enters from suction port can tell two branch roads by a suction port and two air outlets are set on the valve body of making at metallic material; By rotating valve rod is set in the valve body, be connected with two valve gaps that are complementary with the air outlet respectively on the valve rod, by extend the extension of valve body outside at valve body external drive valve rod, make valve rod drive valve gap and in valve body, rotate; By the sealing surface of mutual coupling is set between valve gap and air outlet, make when one of them valve gap turns to the air outlet with valve rod, this air outlet can be sealed up, thereby make gas to flow out from another air outlet, reach the purpose of commutation.By being provided with on the symmetrical neutral surface that valve rod is positioned at two air outlet center lines, make valve rod equate to the distance of two air outlet center lines, because the valve gap vertical seal is located in the air outlet, be that sealing surface is vertical with the center line of air outlet, make valve gap equate to the distance between the valve rod rotary centerline with the valve rod joint, movement locus when such two valve gaps rotate in valve body with the valve rod joint overlaps, make that required valve inner space was less when two valve gaps rotated in valve body, help reducing the volume and weight of valve body, save manufacture cost.
In addition, as shown in Figure 2, on plane perpendicular to the valve rod rotary middle spindle, by sealing surface P1 on described two valve gaps is set, projection included angle A between the P2 is equal to or less than described two air outlet centre line L 1, the complementary angle of projection included angle B between the L2, when one of them valve gap 30 seals up the air outlet 12 corresponding with it, the sealing surface P2 of another valve gap 40 is parallel with the madial wall S of another air outlet 13, like this, the gas that flows into from suction port can pass through another air outlet swimmingly along the sealing surface P2 of another valve gap, reduced the flow resistance that gas is subjected in this valve body greatly, gas pressure can not change; Sectional area because of each air outlet all equates with the sectional area of suction port simultaneously, makes gas constant from air outlet effluent air flow velocity after commutation.
Further, center line by described suction port is set is with two air outlet center line place plane parallel or overlap, the gas that makes suction port come in directly flows to two air outlets to turn over less angle than long radius after, thereby has reduced the flow path resistance that gas is subjected in valve body further.
Further, comprise being connected with described valve handle activity and matching and form the end cover of described sealing surface by valve gap is set with described air outlet, wherein, the sealing surface that end cover is set is the O-ring conical surface, the sealing surface that sets out gas port is the sealing sphere that is complementary with the described O-ring conical surface, the line that makes sealing surface between end cover and the air outlet form the conical surface and sphere contacts, when the end cover of valve rod drive valve gap turns to the air outlet, because the machining error of accumulation, the center of the O-ring conical surface not necessarily just faces the center of the sealing sphere (real is rounded surface) on the air outlet on the end cover; At this moment, because end cover is connected with valve handle activity, end cover carries out adaptive adjustment, as the center line inclination several angle of end cover with respect to the air outlet, Line of contact between the O-ring conical surface and the sealing sphere will become an ellipse, can reach the reliable sealing purpose equally, avoid gas to reveal away from the sealing surface between end cover and the seal ring.
In high-temperature gas changing-over valve of the present invention, less demanding to the processibility of metallic material because valve rod, valve cover structure in the valve body are simple, the scope that its material is selected strengthens, and then makes its Applicable scope wider.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the erection drawing of high-temperature gas changing-over valve of the present invention;
Fig. 2 is the structural representation sketch of high-temperature gas changing-over valve of the present invention;
Fig. 3 is the structural representation of valve body in the high-temperature gas changing-over valve of the present invention;
Fig. 4 is the structural representation of valve gap and valve rod in the high-temperature gas changing-over valve of the present invention;
Fig. 5 is the I portion enlarged view among Fig. 1;
Fig. 6 is the II portion enlarged view among Fig. 4.
Embodiment
As shown in Figure 1, 2, in the preferred embodiment of low pressure drop high-temperature gas changing-over valve of the present invention, comprise valve body 10, valve rod 20 and two valve gaps 30,40.Be to adapt to the hot environment of high-temperature gas, valve body 10, valve rod 20 and valve gap 30,40 all adopt resistant to elevated temperatures metallic material to make, as stainless steel etc.Shown in Fig. 1,3, one end of valve body 10 is provided with a suction port 11, and the other end is provided with two air outlets 12,13, and the sectional area of each air outlet all equates with the sectional area of suction port, after guaranteeing commutation, the air displacement of the air outlet of exhaust is identical with the air inflow of suction port.The sectional shape of air outlet 12,13 and suction port 11 preferably is set to circle, because this shape can be born bigger gas pressure.The centre line L 3 that suction port preferably is set is positioned on two air outlet centre line L 1, the L2 place symmetry neutral surface, and promptly two air outlets 12,13 make whole valve body 10 for symplex structure with respect to centre line L 3 symmetries of suction port, are convenient to production and processing.Centre line L 1, the L2 place plane parallel of the centre line L 3 of suction port and two air outlets preferably is set or overlaps, this preferred embodiment is for overlapping, like this, the glide path of gas in valve body is projected as straight line on the symmetrical neutral surface of two air outlets, thereby reduced the flow path resistance that gas is subjected to further in valve body, reduce the energy loss that gas flows in valve body, reduced the pressure drop of gas.
In this preferred embodiment, valve rod 20 and valve gap 30,40 all are arranged in the valve body 10.Wherein, valve rod 20 can be arranged on the symmetrical neutral surface of two air outlet centre line L 1, L2 with respect to valve body 10 rotations and its rotary centerline L4.Two valve gaps 30,40 connect and are arranged on the valve rod 20 correspondingly with two air outlets 12,13 respectively, and can vertical seal locate in the air outlet, and form sealing surface P1, P2 between the madial wall of air outlet, and promptly valve gap 30,40 is vertical with gas outlet center line L1, L2.Valve gap 30,40 enough spaces is set, so that can rotate with valve rod 20 in valve body 10 in valve body 10.The rotary centerline L4 of valve rod is positioned at two air outlet centre line L 1, on the symmetrical neutral surface of L2, make the rotary centerline L4 of valve rod to two air outlet centre line L 1, the distance of L2 equates, because valve gap 30,40 vertical seal are in the air outlet 12,13 places, be that sealing surface P1 place plane P 1 is vertical with the centre line L 1 of air outlet, make two valve gaps 30,40 equate to the distance between the valve rod rotary centerline L4 with valve rod 20 joints, movement locus when such two valve gaps rotate in valve body with the valve rod joint overlaps, make two valve gaps 30,40 required valve inner spaces when rotating in valve body 10 are less, help reducing the volume and weight of valve body, save manufacture cost.The rotary centerline L4 that valve rod preferably is set and two air outlet centre line L 1, plane, L2 place are vertical, like this, movement locus when two valve gaps 30,40 rotate in valve body 10 with valve rod 20 joints is with two air outlet centre line L 1, L2 place plane parallel or overlap, and makes that required valve inner space was littler when two valve gaps 30,40 rotated in valve body 10.
As shown in Figure 4, in this preferred embodiment, valve rod 20 is set comprises rotating shaft 21 and connecting rod 22, an end of described rotating shaft 21 extend to valve body outside and and valve body between hermetic seal structure or its Sealing commonly used in the prior art are set.The epitaxial end of rotating shaft can be provided with handle, can drive rotating shaft by handle with sleeve and rotate, thereby make valve rod rotate in valve body.Described connecting rod preferably is set to T shape, makes connecting rod 22 be rendered as the shape of symmetry, convenient processing; And when the assembling of itself and two valve gaps, have interchangeability, be beneficial to assembling.The tail end 23 of T shape connecting rod is fixed on rotating shaft 21 middle parts, can rotate with rotating shaft 21; The T shape of T shape connecting rod 24 comprises two sides 25,26, and above-mentioned two valve gaps 30,40 are connected on this two side ends 25,26.T shape connecting rod 22 preferably is set to parallel two air outlet centre line L 1, plane, L2 place, make that the tail end 23 of T shape connecting rod is vertical with rotating shaft 21, and a T shape side 25,26 of valve gap 30,40 and T shape connecting rod is perpendicular, thereby guarantees that sealing surface P1, plane, P2 place on the valve gap are parallel with the rotary centerline (being the rotary centerline L4 of valve rod) of rotating shaft.
Shown in Fig. 4,6, valve gap 30 comprises end cover 31, capping 32 and connecting bolt 33.Wherein the shape of end cover 31 and air outlet 12 shapes are complementary, and can seal corresponding with it air outlet 12 after making sealing end cap 31 rotate in valve body 10, and the centre of end cover 31 is provided with a through hole 34.The T shape side 25 that through hole 34 and T shape connecting rod are passed in the screw section 35 of connecting bolt is fixed together, and the head 36 of connecting bolt is stuck on the end cover 31 apart from the T shape connecting rod side side far away.So just end cover 31 is connected a T shape side 25 of T shape connecting rod.Capping 32 is fixed on end cover 31 by fastening piece (as screw etc.) 37 and is provided with on the side side of connecting bolt head, and will cover through hole 34, also be provided with a chamber 38 between capping 32 and the end cover 31, the head 36 of connecting bolt is positioned at this chamber 38, and the head 36 of this connecting bolt is movable in this chamber 38, make end cover 31 relatively T shape connecting rod 22 form and flexibly connect.This chamber 38 can be the groove of offering in capping 32, also can be to be positioned at the through hole counterbore that through hole 34 places are provided with on the end cover.Because capping 32 sealings are arranged on through hole 34 places, make gas can not leak from the gap of connecting screw rod.
As shown in Figure 2, by the 25 crooked suitable radians of T shape on the T shape connecting rod 22 that valve rod is set, make sealing surface P1, the P2 of two valve gaps at the complementary angle that is less than or equal to described two air outlet centre line L 1, L2 projection included angle B on perpendicular to the plane of valve rod rotary centerline L4 perpendicular to the projection included angle A on the plane of valve rod rotary centerline L4.In this preferred embodiment, because preferred valve rod rotary centerline L4 is vertical with centre line L 1, the plane, L2 place of two air outlets, then two air outlet centre line L 1, L2 perpendicular to the projection included angle B on the plane of valve rod rotary centerline L4 are being exactly angle between the two air outlet center lines; Owing to but two valve gaps, 30,40 vertical seal are set at corresponding with it 12,13 places, air outlet, make that sealing surface P1, the P2 of two valve gaps are parallel with valve rod rotary centerline L4, then the sealing surface of two valve gaps perpendicular to the projection included angle B on the plane of valve rod rotary centerline L4 is being exactly angle between two valve bonnet seal face P1, the P2.Therefore, in this preferred embodiment, the complementary angle that included angle A between the two valve bonnet seal faces is less than or equal to included angle B between the two air outlet center lines is set gets final product.As shown in Figure 2, when one of them valve gap 30 seals up the air outlet 12 corresponding with it, the sealing surface P2 of another valve gap 40 is parallel with the madial wall S of another air outlet 13 or form angles greater than 180 degree, 12 direction tilts valve gap 40 towards the air outlet with respect to air outlet 13 madial walls, thereby can at the suction port place gas be divided into two strands because of the center line of oblique air outlet 13; Like this, the gas that flows into from suction port 11 can pass through another air outlet 13 swimmingly along the sealing surface P2 of another valve gap, has reduced the flow path resistance that gas is subjected in this valve body 10 greatly, has reduced the pressure drop of gas; Sectional area because of each air outlet all equates with the sectional area of suction port simultaneously, makes gas can not change from air outlet effluent air total amount after commutation, has further promoted reducing of gas pressure drop.In this preferred embodiment, preferably the included angle B between the two air outlet center lines is set to 60 degree, included angle A between the two valve bonnet seal faces is set to 30 degree, makes two included angle A, B complementary angle each other, and then the angle between valve gap 40 and the air outlet madial wall S is 180 to spend; Thereby make gas when flowing out from one of them air outlet through valve body from suction port, only need turn over the angle of 30 degree, and valve inner has enough spaces to rotate for valve gap again, this moment, the end cover of valve gap was parallel with the air outlet madial wall, be to flow during gas process valve inner, and can be divided into two strands by valve gap along the air outlet madial wall is straight.
Equally, the included angle B between can also two air outlet center lines is set to 30 degree, and the included angle A between the two valve bonnet seal faces is set to less than 60 degree, as 45 degree; Perhaps the included angle B between the two air outlet center lines is set to 80 degree, and the included angle A between the two valve bonnet seal faces is set to less than 10 degree, as 5 degree; Angle between valve gap 40 and air outlet 13 madial walls is greater than 180 degree at this moment, and valve gap 40 equally can be so that gas flows out along the sealing surface of valve gap 40 and the madial wall of air outlet 13 swimmingly with respect to 12 inclinations towards the air outlet of air outlet 13 madial walls; Can be because of not being divided into two strands by valve gap, make wherein one to flow to and 13 flow out from the air outlet again after turning back in valve gap 30 places that the energy loss when further having reduced gas flow has reduced gas pressure drop.
Shown in Fig. 1,5, during the vertical seal between valve gap 10 and air outlet 12 cooperated, the sealing surface on the valve gap 30 was arranged on the end cover 31, and the sealing surface on the preferred end cover 31 is the O-ring conical surface 53; The sealing surface at 12 places, air outlet is arranged on the step 55 of air outlet inwall in the valve body, this step 55 is provided with rounded surface 54 towards a side of valve gap 30, the O-ring conical surface 53 common sealing surface P1 that form between valve gap and the air outlet of this rounded surface 54 and end cover, thereby the sealing between realization valve gap 30 and the air outlet 12.Concrete, rounded surface 54 on the step is the sealing sphere, when the end cover on the valve gap 31 turns to step 55 places of air outlet with valve rod 20, the O-ring conical surface 53 on the end cover is embedded in the step 55 of air outlet inwall, makes to form the line contact between the O-ring conical surface 53 and the sealing sphere 54.If the center of the O-ring conical surface 53 and the central lines of air outlet, then the Line of contact between the O-ring conical surface 53 and the sealing sphere 54 is a circle.But because the machining error of accumulation, the center of the O-ring conical surface 53 not necessarily just faces the center of the sealing sphere (being rounded surface) 54 on the air outlet on the end cover.At this moment, because end cover 31 flexibly connects by connecting screw rod 33 with valve rod 20, end cover 31 is on the step 55 that is pressed on the air outlet inwall by the T shape connecting rod 22 of valve rod the time, can carry out adaptive adjustment: end cover 31 is with respect to the centre line L 1 inclination several angle of air outlet, same line contact, the formation reliable sealing of forming between the O-ring conical surface 53 and the sealing sphere 54.
On valve gap 30, be mingled with a lot of fine particles in the high-temperature gas usually, these fine particles are easy to be brought into gap between chamber 38, connecting bolt 33 and the through hole 34 between end cover and the capping by gas.And when end cover 31 was pressed on step 55 places of air outlet inwall by T shape connecting rod 22, a T shape side 25 of T shape connecting rod was pressed on through hole 34 the other ends.A T shape side 25 sizes that T shape connecting rod is set make a T shape side 25 just in time can cover through hole 34 greater than through hole 34 apertures, prevent that fine particle from entering in the through hole.The T shape side 25 that T shape connecting rod preferably is set makes a T shape side 25 form line with through hole 34 and contacts for spherical.When the center line of through hole 34 and a T shape side 25 decentraction, spherical surface still can form circular Line of contact with through hole.When T shape connecting rod 22 passes torque to end cover 31, the Line of contact of this circle make end cover stressed evenly, thereby can be sealed in the place, air outlet more reliably.
In long-term using process, as shown in Figure 3, in the above-described embodiments, be preferably in the position of matching with valve gap 30,40 in two air outlets 12,13 of valve body 10 seal ring 14 is set, with a locking nut 15 seal ring 14 is fixed on the madial wall of air outlet 12 again.Seal ring 14 and valve body 10 inwalls form the madial wall step 55 of the air outlet described in the foregoing description, and seal ring 14 is provided with rounded surface 54 towards an end of valve gap 30, is the sealing sphere.Like this, after long-term the use, behind sealing sphere 54 wear out failures, removable locking nut 15 takes off seal ring 14 and changes, thereby guarantees the sealability between valve gap 30 and the air outlet 12.
In the above-described embodiments, valve body can be provided with as a whole, also can be divided into two-part.As shown in Figure 3, preferably valve body 10 is set to two-part, an end that promptly is provided with suction port 11 is a part, and an end that is provided with air outlet 12,13 is another part, and two-part are fixed together by fastening connection piece.Be provided with like this, conveniently the chamber that rotates for valve gap in the processing valve body also makes things convenient for valve gap 30,40 and valve rod 20 are installed in the valve body 10, also conveniently designs and produces the casting mould of valve body simultaneously.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1, a kind of low pressure drop high-temperature gas changing-over valve comprises valve body, it is characterized in that, described valve body one end is provided with a suction port, and the other end is provided with two air outlets, and the sectional area of described two air outlets all is set to equate with the sectional area of suction port; Be provided with rotating valve rod in the described valve body, the rotary centerline of described valve rod is positioned on the symmetrical neutral surface of two air outlet center lines, and the one end extends to the valve body outside; Be connected with the valve gap that two energy rotate around valve rod in valve body with valve rod on the described valve rod; Be provided with mutual coupling between described valve gap and the corresponding air outlet and perpendicular to the sealing surface of this gas outlet center line; On the plane perpendicular to the valve rod rotary middle spindle, the projection angle on described two valve gaps between the sealing surface is less than or equal to the complementary angle of projection angle between the described two air outlet center lines.
According to the described low pressure drop high-temperature gas changing-over valve of claim 1, it is characterized in that 2, the center line of described suction port is with two air outlet center line place plane parallel or overlap.
3, according to the described low pressure drop high-temperature gas changing-over valve of claim 2, it is characterized in that, described valve gap comprises being movably connected on the described valve rod and matching with described air outlet and forms the end cover of described sealing surface, the sealing surface of described end cover is set to the O-ring conical surface, and the sealing surface of described air outlet is set to the sealing sphere that is complementary with the described O-ring conical surface.
According to the described low pressure drop high-temperature gas changing-over valve of claim 3, it is characterized in that 4, place, described air outlet is provided with seal ring and seal ring is fixed on the locking nut at place, air outlet, described sealing sphere is arranged on the seal ring end towards end cover.
5, according to the described low pressure drop high-temperature gas changing-over valve of claim 3, it is characterized in that, the end cover of described valve gap and described valve rod joint are provided with through hole, described valve gap comprises that also tail end passes described through hole and is fixedly connected on connecting bolt on the valve rod, and is fixed on the end cover and with the capping in described through hole of the head seal of described attachment screw.
6, according to the described low pressure drop high-temperature gas changing-over valve of claim 5, it is characterized in that, described valve rod comprises rotating shaft and the connecting rod that is fixed together, one end of described rotating shaft extends to the valve body outside, one end of described connecting rod is fixed on the rotating shaft middle part, and its other end is fixedlyed connected with the connecting bolt afterbody of described two valve gaps respectively.
7, according to the described low pressure drop high-temperature gas changing-over valve of claim 6, it is characterized in that, be positioned at the through hole between described capping and the end cover and be provided with chamber, be set to the spherical crown that is complementary with described through hole with the joint, screw section of described connecting bolt on the described connecting rod for the head movement of described connecting bolt.
According to the high-temperature gas changing-over valve of each described low pressure loss in the claim 1 to 7, it is characterized in that 8, the angle between the described two air outlet center lines is set to 30～80 degree, the angle between the seal face of described two valve gaps is set to 5～60 degree.
According to the described low pressure drop high-temperature gas changing-over valve of claim 2, it is characterized in that 9, the center line of described suction port also is arranged on the symmetrical neutral surface of two air outlet center lines.
According to the described low pressure drop high-temperature gas changing-over valve of claim 2, it is characterized in that 10, the rotary centerline of described valve rod is vertical with plane, center line place, two air outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100667236A CN100561025C (en) | 2008-04-14 | 2008-04-14 | Low pressure drop high-temperature gas changing-over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100667236A CN100561025C (en) | 2008-04-14 | 2008-04-14 | Low pressure drop high-temperature gas changing-over valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101260943A true CN101260943A (en) | 2008-09-10 |
| CN100561025C CN100561025C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100667236A Expired - Fee Related CN100561025C (en) | 2008-04-14 | 2008-04-14 | Low pressure drop high-temperature gas changing-over valve |
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| CN (1) | CN100561025C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769387B (en) * | 2009-11-23 | 2011-12-21 | 深圳大学 | Reversing valve with flow guide structure |
| CN112648406A (en) * | 2020-12-21 | 2021-04-13 | 浙江宣达环境科技股份有限公司 | Wear-resistant turnover plate reversing valve |
-
2008
- 2008-04-14 CN CNB2008100667236A patent/CN100561025C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769387B (en) * | 2009-11-23 | 2011-12-21 | 深圳大学 | Reversing valve with flow guide structure |
| CN112648406A (en) * | 2020-12-21 | 2021-04-13 | 浙江宣达环境科技股份有限公司 | Wear-resistant turnover plate reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100561025C (en) | 2009-11-18 |
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