CN110566674A - Novel pressure regulating and silencing valve - Google Patents
Novel pressure regulating and silencing valve Download PDFInfo
- Publication number
- CN110566674A CN110566674A CN201910740363.1A CN201910740363A CN110566674A CN 110566674 A CN110566674 A CN 110566674A CN 201910740363 A CN201910740363 A CN 201910740363A CN 110566674 A CN110566674 A CN 110566674A
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- cylinder
- silencing
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 59
- 230000001105 regulatory effect Effects 0.000 title claims description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a novel pressure-regulating silencing valve. The hydraulic control valve comprises a front valve body, a servo oil cylinder, a linear displacement sensor, a connecting frame, a travel switch, a valve rod, a shaft sleeve, a conical valve clack, a conical valve seat, a guide rod, a guide sleeve, a middle valve body and a rear valve body; the front valve body is formed by welding an inlet flange, an inlet taper pipe, a cylinder, an elliptical pipe, a connecting flange and a supporting leg; the middle valve body consists of a connecting flange, an inlet ring plate, a cylinder, a flow-regulating gate and an outlet ring plate; the rear valve body consists of a connecting flange, an outer ring plate, a screw rod, an inner ring plate, a cylinder, an outer layer silencing ring, a middle layer silencing ring, an inner layer silencing ring, an outlet taper pipe, an outlet flange and supporting legs. The invention changes the flow area of the air flow between the conical valve clack and the conical valve seat by the reciprocating linear motion of the conical valve clack driven by the servo oil cylinder so as to achieve the purpose of pressure regulation, and can realize the functions of rectifying and silencing high-speed air flow and the functions of rectifying and silencing high-speed air flow by the rectifying grating and the multilayer silencing rings arranged in the inner cavity of the valve.
Description
Technical Field
the invention relates to a novel pressure-regulating silencing valve, in particular to a pressure-regulating silencing valve which can control the gas pressure at the top of an iron-making blast furnace and can control the pressure at the top of the blast furnace within the range of iron-making process requirements.
Background
The pressure regulating valve group is a pressure regulating device for controlling the pressure of the gas at the top of the blast furnace, and the normal and high-efficiency production of the blast furnace can be ensured only by controlling the pressure at the top of the blast furnace within the process requirement range. At present, in order to improve the iron-making efficiency, the pressure value of high-pressure operation of a large and medium-sized blast furnace is increasingly large, and the gas flow during high-pressure operation is increasingly large, so that the caliber of a regulating butterfly valve matched with a pressure regulating valve group is increasingly large, and the regulating performance of the regulating butterfly valve is increasingly difficult to meet the technical requirements of the high-pressure operation of the iron-making blast furnace.
As shown in fig. 1 and 2, a conventional butterfly valve pressure regulating valve set generally comprises a front collecting pipe 1, a regulating butterfly valve 2, a tapered connecting pipe 3 and a rear collecting pipe 4. 4 export takeover are usually seted up to the seal end of collecting pipe 1 in the front, and 4 export takeover's right-hand member passes through flange form and 4 regulation butterfly valves respectively fixed connection, and 4 regulation butterfly valves right-hand member are connected with 4 taper joint pipes respectively, and 4 taper joint pipe's right-hand member is connected 4 seal ends in the collecting pipe of back respectively, adjusts the butterfly valve and adopts 3 heavy-calibre butterfly valves and 1 less bore butterfly valves of equal bore usually. According to the technological requirements of the iron-making blast furnace, the opening angle of the butterfly valve is controlled and adjusted at the same time or partially so as to meet the technological requirements of high-pressure operation of the furnace top. Due to the inherent flow regulation characteristic limitation of the butterfly valve, the butterfly valve has approximate linear regulation performance within 25-75% of the travel range, and the nominal diameters of a larger-caliber butterfly valve for coarse regulation and a smaller-caliber butterfly valve for fine regulation have matching requirements. In practical application, due to the mismatching of the nominal diameter designs of the large butterfly valve and the small butterfly valve, the adjusting performance of the butterfly valve cannot completely meet the technological requirements, and meanwhile, due to the fact that the butterfly valves act simultaneously, the operation control program of the driving device is complex, and the accident rate of operation control is high.
Disclosure of Invention
the invention aims to provide a novel pressure regulating and silencing valve for controlling the top gas pressure of an iron-making blast furnace, which overcomes the defects of poor regulating performance, complex operation control program of a driving device and higher accident rate of operation control of the traditional pressure regulating valve group in the prior art, has good regulating performance and silencing performance, simplifies the operation control program of the driving device, and is simpler and more reliable in valve operation control.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a novel pressure regulating silencing valve which comprises a front valve body (5), a servo oil cylinder (6), a linear displacement sensor (7), a connecting frame (8), a travel switch (9), a valve rod (10), a shaft sleeve (11), a conical valve clack (12), a conical valve seat (13), a guide rod (14), a guide sleeve (15), a middle valve body (16) and a rear valve body (17);
The front valve body (5) is connected with the middle valve body (16) through a flange, and the middle valve body (16) is connected with the rear valve body (17) through a flange;
The front valve body (5) is formed by welding an inlet flange (18), an inlet taper pipe (19), a cylinder (20), an elliptical pipe (21), a connecting flange (22) and supporting legs, and the elliptical pipe (21) penetrates through the wall of the cylinder and is welded with the cylinder (20);
The middle valve body (16) is composed of connecting flanges (23), inlet ring plates (24), cylinders (25), a rectifying grid (26) and outlet ring plates (27), the two connecting flanges (23) are respectively welded at the two ends of the cylinder (25), the sealing surfaces of the connecting flanges (23) are perpendicular to the central line of the cylinder (25), the inlet ring plates (24) and the outlet ring plates (27) are respectively welded at the left end and the right end of the inner cavity of the cylinder (25), the sections of the inlet ring plates (24) and the outlet ring plates (27) are L-shaped, outer edge cylinders arranged on the conical valve seat (13) are inserted into inner edge cylinders arranged on the inlet ring plates (24) for positioning and then are connected by fasteners, outer edge cylinders (38) arranged on the rectifying grid (26) are inserted into inner edge positioning cylinders arranged on the outlet ring plates (27) for positioning and then are connected by fasteners, the inner side surfaces of the inlet ring plate (24) and the outlet ring plate (27) are respectively provided with sound attenuation materials;
The rear valve body (17) consists of a connecting flange (28), outer annular plates (29), screws (30), an inner annular plate (31), a cylinder (32), an outer sound-deadening ring (33), a middle sound-deadening ring (34), an inner sound-deadening ring (35), an outlet taper pipe (36), an outlet flange (37) and support legs, wherein the connecting flange (28) and the outlet taper pipe (36) are respectively welded at the left end and the right end of the cylinder (32), the outlet flange (37) is welded at the right end of the outlet taper pipe (36), the two outer annular plates (29) are respectively welded at the two ends of the inner cavity of the cylinder (32), the two inner annular plates (31) are respectively and fixedly connected with the two outer annular plates (29) through a plurality of screws (30) which are uniformly distributed along the central line of the rear valve body (17), the outer sound-deadening ring (33) is positioned at the inner sides of the two outer annular plates (29) and is fixedly connected with the inner wall of the cylinder (32) after being attached, the middle sound-, the inner diameter of the middle silencing ring (34) is equal to the inner diameter of the outer ring plate (29), the inner silencing rings (35) are positioned on the inner sides of the two inner ring plates (31) and fixedly connected with the inner ring plates (31), and the inner diameter and the outer diameter of each inner silencing ring (35) are respectively equal to the inner diameter and the outer diameter of each inner ring plate (31);
The horizontal central lines of the front valve body (5), the middle valve body (16), the rear valve body (17), the servo oil cylinder (6), the connecting frame (8), the valve rod (10), the conical valve clack (12), the conical valve seat (13), the guide rod (14) and the rectifying grating (26) are overlapped, wherein the servo oil cylinder (6) and the connecting frame (8) are arranged in the elliptical tube (21), the servo oil cylinder (6) is fixedly connected with the left end of the connecting frame (8), the linear displacement sensor (7) and the travel switch (9) are arranged on the connecting frame (8), the right end of the connecting frame (8) is fixedly connected with a base (42) arranged on the elliptical tube (21), a shaft sleeve (11) is arranged in the base (42), the shaft sleeve (11) supports the valve rod (10), the valve rod (10) is assembled in the shaft sleeve (11), the left end of the valve rod (10) is fixedly connected with a piston rod of the servo oil cylinder (6), and the right end of the valve rod (10) is, the right end of the conical valve flap (12) is fixedly connected with the left end of the guide rod (14), the right end of the guide rod (14) penetrates through the guide sleeve (15), and the guide sleeve (15) is arranged in the guide seat (41) of the rectifying grating (26).
The working principle and the process of the invention are as follows: the servo oil cylinder (6) drives the valve rod (10) and the conical valve clack (12) to do reciprocating linear motion in the horizontal direction, and the adjustment, the closing and the in-place opening of the furnace top pressure are realized through the change of the circular seam area formed between the conical valve clack (12) and the conical valve seat (13); a linear displacement sensor (7) arranged on the connecting frame (8) outputs an electric signal of the opening and closing position of the valve at the right moment, and a travel switch (9) displays the signals of the opening and closing in place of the valve.
When the valve is to be completely closed, oil is fed into an oil port at the right end of the servo oil cylinder (6), hydraulic oil pushes the piston rod to move leftwards, the piston rod drives the valve rod (10) and the conical valve clack (12) to synchronously move leftwards until the outer conical surface of the conical valve clack (12) is attached to the inner conical surface of the conical valve seat (13), the valve is closed in place, and the travel switch (9) outputs a signal that the valve is closed in place.
When the valve is to be completely opened, oil is fed into an oil port at the left end of the servo oil cylinder (6), hydraulic oil pushes the piston rod to move rightwards, the piston rod drives the valve rod (10) and the conical valve clack (12) to move rightwards synchronously, the outer conical surface of the conical valve clack (12) is separated from the inner conical surface of the conical valve seat (13), the valve is opened in place after the piston on the servo oil cylinder (6) runs in place, and the travel switch (9) outputs a signal that the valve is opened in place.
When the pressure of the blast furnace top is to be regulated, a control program is started to drive the servo oil cylinder (6) to act according to the corresponding relation between the stroke of the servo oil cylinder (6) and the pressure of the furnace top, and the opening area of the valve is timely regulated through an electric signal of the linear displacement sensor (7) so as to achieve the purpose of regulating the pressure.
The upstream high-speed airflow bypasses an oval pipe (21) through an inlet flange (18), passes through a gap between a conical valve flap (12) and a conical valve seat (13), enters an inner cavity of a middle valve body (16) for buffering and decelerating, is rectified and carded through a flow guide cone (40) and a rectifying plate (39) arranged on a rectifying grating (26), enters an annular space formed by a middle-layer silencing ring (34) and an inner-layer silencing ring (35), a larger part of the airflow moves rightwards along the horizontal center line direction of the pressure-regulating silencing valve, a smaller part of the airflow passes through the middle-layer silencing ring (34) or the inner-layer silencing ring (35) and is radially diffused to the annular space formed by an outer-layer silencing ring (33) and the middle-layer silencing ring (34) or a cylindrical space formed by the inner-layer silencing ring (35) and continuously moves rightwards, and finally all the air is collected into a downstream process pipeline; when the high-speed airflow passes through the silencing material arranged on the silencing ring, the kinetic energy of the high-speed airflow is absorbed by the silencing material, and finally the purposes of silencing and reducing noise are achieved.
The beneficial effects of the invention by adopting the scheme are as follows:
The novel pressure-regulating silencing valve adopts the conical valve to replace a plurality of regulating butterfly valves in the prior art, simplifies the operation control program of the driving device, and has simpler and more reliable valve operation control.
The novel pressure regulating silencing valve adopts the conical valve to replace a plurality of regulating butterfly valves in the prior art, only one driving device is needed, and the purchase or manufacturing cost of the driving device (such as a hydraulic servo oil cylinder and an electric regulating device) is reduced.
Compared with the adjusting butterfly valve in the prior art, the conical valve has equal percentage flow characteristic in the whole opening and closing stroke, has better adjusting performance, and can better meet the process requirement of adjusting the pressure of the top of the blast furnace.
The novel pressure regulating silencing valve provided by the invention has the advantages that the flow guiding rectification and energy absorption damping of high-speed airflow are realized by arranging the rectifying grating structure and the silencing ring structure, and the silencing and noise reducing performances are good.
Drawings
Fig. 1 is a schematic structural diagram of a conventional butterfly valve pressure regulating valve set.
3 fig. 32 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 of 3 fig. 3 1A 3- 3 a 3. 3
Fig. 3 is a schematic structural diagram of an embodiment of the novel pressure regulating silencing valve.
Fig. 4 is a cross-sectional view of the invention taken along the line of fig. 3B-B.
FIG. 5 is a schematic view of the structure of FIG. 3 according to the present invention.
Fig. 6 is a schematic view of the air flow state of the novel pressure regulating silencing valve in the open state.
FIG. 7 is a schematic structural diagram of a flow straightener in an embodiment of the novel pressure regulating silencer valve of the present invention.
fig. 8 is a cross-sectional view taken along the line of fig. 7C-C of the present invention.
In the figure: 1. a front manifold; 2. a pressure regulating butterfly valve; 3. a tapered adapter tube; 4. a rear manifold; 5. a front valve body; 6. a servo cylinder; 7. a linear displacement sensor; 8. a connecting frame; 9. a travel switch; 10. a valve stem; 11. a shaft sleeve; 12. a tapered valve flap; 13. a conical valve seat; 14. a guide bar; 15. a guide sleeve; 16. a middle valve body; 17. a rear valve body; 18. an inlet flange; 19. an inlet cone; 20. a cylinder; 21. an elliptical tube; 22. a connecting flange; 23. a connecting flange; 24. an inlet ring plate; 25. a cylinder; 26. a rectifying grid; 27. an outlet ring plate; 28. a connecting flange; 29. an outer ring plate; 30. a screw; 31. an inner ring plate; 32. a cylinder; 33. an outer layer noise reduction ring; 34. a middle layer silencing ring; 35. an inner layer sound deadening ring; 36. an outlet cone; 37. an outlet flange; 38. an outer edge cylinder; 39. a rectifying plate; 40. a flow guide cone; 41. a guide seat; 42. a base.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
As shown in fig. 3 and 4, the novel pressure regulating silencing valve according to the embodiment of the invention comprises a front valve body 5, a servo oil cylinder 6, a linear displacement sensor 7, a connecting frame 8, a travel switch 9, a valve rod 10, a shaft sleeve 11, a conical valve clack 12, a conical valve seat 13, a guide rod 14, a guide sleeve 15, a middle valve body 16 and a rear valve body 17. The front valve body 5 is connected with the middle valve body 16 through a flange, and the middle valve body 16 is connected with the rear valve body 17 through a flange. Servo cylinder 6 and 8 left end fixed connection of link, linear displacement sensor 7 and travel switch 9 are installed on link 8, 8 right-hand members of link and the base 42 fixed connection on the elliptical tube 21 set up axle sleeve 11 in the base 42, axle sleeve 11 supports valve rod 10, the piston rod fixed connection of 10 left ends of valve rod and servo cylinder 6, valve rod 10 right-hand members and 12 left ends of toper valve clack pass through round pin axle fixed connection, 12 right ends of toper valve clack and 14 left end fixed connection of guide bar, guide bar 14 runs through the uide bushing 15 of setting on the grating.
as shown in fig. 5, 6, 7 and 8, the front valve body 5 is formed by welding an inlet flange 18, an inlet taper pipe 19, a cylinder 20, an elliptical pipe 21, a connecting flange 22 and a support leg, wherein the elliptical pipe 21 penetrates through the wall of the cylinder and is welded with the cylinder 20; the middle valve body 16 consists of connecting flanges 23, an inlet ring plate 24, a cylinder 25, a flow straightener 26 and an outlet ring plate 27, the two connecting flanges 23 are respectively welded at the two ends of the cylinder 25, the inlet ring plate 24 and the outlet ring plate 27 are respectively welded at the left end and the right end of the inner cavity of the cylinder 25, the cross sections of the inlet ring plate 24 and the outlet ring plate 27 are L-shaped, an outer edge cylinder arranged on the conical valve seat 13 is inserted into an inner edge cylinder arranged on the inlet ring plate 24 for positioning and then connected by a fastener, an outer edge cylinder 38 arranged on the flow straightener 26 is inserted into an inner edge cylinder arranged on the outlet ring plate 27 for positioning and then connected by a fastener, the inner side surfaces of the inlet ring plate 24 and the outlet ring plate 27 are respectively provided with a silencing material, the flow-regulating fence 26 consists of an outer edge cylinder 38, a flow-regulating plate 39, a flow-regulating cone 40 and a guide seat 41, and the flow-regulating plate 39 is uniformly distributed along the symmetrical center line of the outer edge cylinder 38 to regulate and comb disordered airflow; the rear valve body 17 consists of a connecting flange 28, an outer ring plate 29, a screw rod 30, an inner ring plate 31, a cylinder 32, an outer layer sound-deadening ring 33, a middle layer sound-deadening ring 34, an inner layer sound-deadening ring 35, an outlet taper pipe 36, an outlet flange 37 and supporting legs, the connecting flange 28 and the outlet taper pipe 36 are respectively welded at the left end and the right end of the cylinder 32, the outlet flange 37 is welded at the right end of the outlet taper pipe 36, the two outer ring plates 29 are respectively welded at the two ends of the inner cavity of the cylinder 32, the two inner ring plates 31 are respectively fixedly connected with the two outer ring plates 29 through a plurality of screws 30 uniformly distributed along the central line of the rear valve body 17, the outer silencing ring 33 is positioned at the inner sides of the two outer ring plates 29 and is fixedly connected with the inner wall of the cylinder 32 after being attached, the middle silencing ring 34 is positioned at the inner sides of the two outer ring plates 29 and is fixedly connected with the outer ring plates 29, and the inner silencing ring 35 is positioned at the inner sides of the.
The working process of the invention is as follows: the servo oil cylinder 6 drives the valve rod 10 and the conical valve clack 12 to do reciprocating linear motion in the horizontal direction, and the adjustment, the closing and the opening of the furnace top pressure are realized in place through the change of the circular seam area formed between the conical valve clack 12 and the conical valve seat 13.
When the valve is to be completely closed, oil is fed into an oil port at the right end of the servo oil cylinder 6, hydraulic oil pushes the piston rod to move leftwards, the piston rod drives the valve rod 10 and the conical valve clack 12 to synchronously move leftwards until the outer conical surface of the conical valve clack 12 is tightly attached to the inner conical surface of the conical valve seat 13, the valve is closed in place, the induction plate fixedly connected to the piston rod synchronously moves in place, and the travel switch 9 outputs a signal that the valve is closed in place.
When the valve is to be opened completely, oil is fed into an oil port at the left end of the servo oil cylinder 6, hydraulic oil pushes the piston rod to move rightwards, the piston rod drives the valve rod 10 and the conical valve clack 12 to move rightwards synchronously, the outer conical surface of the conical valve clack 12 is separated from the inner conical surface of the conical valve seat 13, after the piston on the servo oil cylinder 6 runs in place, the valve is opened in place, the sensing plate fixedly connected to the piston rod synchronously moves in place, and the travel switch 9 outputs a signal that the valve is opened in.
when the pressure of the blast furnace top is to be regulated, a control program is started to drive the servo oil cylinder 6 to act according to the corresponding relation between the stroke of the servo oil cylinder 6 and the pressure of the furnace top, an induction plate fixedly connected to a piston rod drives an induction ring of the linear displacement sensor 7 to synchronously move, and the opening area of a valve is timely regulated through an electric signal output by the linear displacement sensor 7 so as to achieve the purpose of regulating the pressure.
The upstream high-speed airflow bypasses the elliptical tube 21 through the inlet flange 18, passes through a gap between the conical valve flap 12 and the conical valve seat 13, enters an inner cavity of the middle valve body 16 for buffering and decelerating, then enters an annular space formed by the middle silencing ring 34 and the inner silencing ring 35 after being rectified and carded by the flow guide cones 40 and the rectifying plates 39 arranged on the rectifying grids 26, a larger part of the airflow moves rightwards along the horizontal center line direction of the pressure regulating silencing valve, a smaller part of the airflow passes through the middle silencing ring 34 or the inner silencing ring 35 and is radially diffused to the annular space formed by the outer silencing ring 33 and the middle silencing ring 34 or a cylindrical space formed by the inner silencing ring 35 to continue moving rightwards, and finally all the air is collected at the right end of the pressure regulating silencing valve and flows into a downstream; when the high-speed airflow passes through the silencing material arranged on the silencing ring, the kinetic energy of the high-speed airflow is absorbed by the silencing material, and finally the purposes of silencing and reducing noise are achieved.
according to the novel pressure-regulating silencing valve, the inlet flange 18 arranged on the front valve body 5 can be changed into a welding structure to be welded with an upstream process pipeline, the outlet flange 37 arranged on the rear valve body 17 can be changed into a welding structure to be welded with a downstream process pipeline, and the change of the design structure is in the range of patent protection.
Claims (1)
1. The utility model provides a novel pressure regulating amortization valve which characterized in that: the device comprises a front valve body (5), a servo oil cylinder (6), a linear displacement sensor (7), a connecting frame (8), a travel switch (9), a valve rod (10), a shaft sleeve (11), a conical valve flap (12), a conical valve seat (13), a guide rod (14), a guide sleeve (15), a middle valve body (16) and a rear valve body (17); the front valve body (5) is connected with the middle valve body (16) through a flange, and the middle valve body (16) is connected with the rear valve body (17) through a flange; the front valve body (5) is formed by welding an inlet flange (18), an inlet taper pipe (19), a cylinder (20), an elliptical pipe (21), a connecting flange (22) and supporting legs, and the elliptical pipe (21) penetrates through the wall of the cylinder and is welded with the cylinder (20); the middle valve body (16) is composed of connecting flanges (23), inlet ring plates (24), cylinders (25), a rectifying grid (26) and outlet ring plates (27), the two connecting flanges (23) are respectively welded at the two ends of the cylinder (25), the sealing surfaces of the connecting flanges (23) are perpendicular to the central line of the cylinder (25), the inlet ring plates (24) and the outlet ring plates (27) are respectively welded at the left end and the right end of the inner cavity of the cylinder (25), the sections of the inlet ring plates (24) and the outlet ring plates (27) are L-shaped, outer edge cylinders arranged on the conical valve seat (13) are inserted into inner edge cylinders arranged on the inlet ring plates (24) for positioning and then are connected by fasteners, outer edge cylinders (38) arranged on the rectifying grid (26) are inserted into inner edge positioning cylinders arranged on the outlet ring plates (27) for positioning and then are connected by fasteners, the inner side surfaces of the inlet ring plate (24) and the outlet ring plate (27) are respectively provided with sound attenuation materials; the rear valve body (17) consists of a connecting flange (28), outer annular plates (29), screws (30), an inner annular plate (31), a cylinder (32), an outer sound-deadening ring (33), a middle sound-deadening ring (34), an inner sound-deadening ring (35), an outlet taper pipe (36), an outlet flange (37) and support legs, wherein the connecting flange (28) and the outlet taper pipe (36) are respectively welded at the left end and the right end of the cylinder (32), the outlet flange (37) is welded at the right end of the outlet taper pipe (36), the two outer annular plates (29) are respectively welded at the two ends of the inner cavity of the cylinder (32), the two inner annular plates (31) are respectively and fixedly connected with the two outer annular plates (29) through a plurality of screws (30) which are uniformly distributed along the horizontal central line of the rear valve body (17), the outer sound-deadening ring (33) is positioned at the inner sides of the two outer annular plates (29) and is fixedly connected with the inner wall of the cylinder (32) after being attached, the middle sound-, the inner diameter of the middle silencing ring (34) is equal to the inner diameter of the outer ring plate (29), the inner silencing rings (35) are positioned on the inner sides of the two inner ring plates (31) and fixedly connected with the inner ring plates (31), and the inner diameter and the outer diameter of each inner silencing ring (35) are respectively equal to the inner diameter and the outer diameter of each inner ring plate (31); the horizontal central lines of the front valve body (5), the middle valve body (16), the rear valve body (17), the servo oil cylinder (6), the connecting frame (8), the valve rod (10), the conical valve clack (12), the conical valve seat (13), the guide rod (14) and the rectifying grating (26) are overlapped, the servo oil cylinder (6) is fixedly connected with the left end of the connecting frame (8), the linear displacement sensor (7) and the travel switch (9) are installed on the connecting frame (8), the right end of the connecting frame (8) is fixedly connected with the base (42) on the elliptical tube (21), the base (42) is internally provided with the shaft sleeve (11), the shaft sleeve (11) supports the valve rod (10), the left end of the valve rod (10) is fixedly connected with the piston rod of the servo oil cylinder (6), the right end of the valve rod (10) is fixedly connected with the left end of the conical valve clack (12) through a pin shaft, the right, the right end of the guide rod (14) penetrates through the guide sleeve (15), and the guide sleeve (15) is arranged in a guide seat (41) of the rectifier grid (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740363.1A CN110566674B (en) | 2019-08-12 | 2019-08-12 | Novel pressure regulating amortization valve |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594443A (en) * | 2020-12-09 | 2021-04-02 | 天生桥二级水力发电有限公司 | Fairing and pressure reducing valve |
| CN114542757A (en) * | 2020-11-24 | 2022-05-27 | 盾安环境技术有限公司 | Reversing valve and refrigerating system |
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| CN108662234A (en) * | 2018-07-09 | 2018-10-16 | 约翰斯顿流体科技（无锡）有限公司 | A kind of sealing effect is good and has the regulating valve of decrease of noise functions |
| CN211423391U (en) * | 2019-08-12 | 2020-09-04 | 石特阀门股份有限公司 | Novel pressure regulating and silencing valve |
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| CN101126454A (en) * | 2007-09-13 | 2008-02-20 | 董映红 | Mute type pressure regulating valve set |
| CN103791113A (en) * | 2014-03-03 | 2014-05-14 | 北京航空航天大学 | Pressure regulating valve |
| CN105587871A (en) * | 2014-10-21 | 2016-05-18 | 王帅 | Novel one-piece regulating valve |
| CN104534134A (en) * | 2014-11-12 | 2015-04-22 | 浙江盾安阀门有限公司 | High-precision diaphragm type muting pressure reduction valve |
| CN108252936A (en) * | 2018-01-04 | 2018-07-06 | 湖南九九智能环保股份有限公司 | A kind of variable cross-section hydraulic pressure regulating fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542757A (en) * | 2020-11-24 | 2022-05-27 | 盾安环境技术有限公司 | Reversing valve and refrigerating system |
| CN114542757B (en) * | 2020-11-24 | 2024-03-22 | 盾安环境技术有限公司 | Reversing valve and refrigerating system |
| CN112594443A (en) * | 2020-12-09 | 2021-04-02 | 天生桥二级水力发电有限公司 | Fairing and pressure reducing valve |
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| CN110566674B (en) | 2024-04-16 |
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