CN103573759A - Throttling and pressure reduction combined device of triangular hole throttling valve - Google Patents
Throttling and pressure reduction combined device of triangular hole throttling valve Download PDFInfo
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- CN103573759A CN103573759A CN201310561014.6A CN201310561014A CN103573759A CN 103573759 A CN103573759 A CN 103573759A CN 201310561014 A CN201310561014 A CN 201310561014A CN 103573759 A CN103573759 A CN 103573759A
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- throttle valve
- rectifier
- delthyrium
- valve plate
- connecting tube
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Abstract
The invention relates to a throttling and pressure reduction combined device of a triangular hole throttling valve. The throttling and pressure reduction combined device of the triangular hole throttling valve comprises the throttling valve, a throttling valve plate, a right flange, a left flange, a connection pipe and a rectifier, wherein one end of the connection pipe is fixedly connected with the right flange through a bolt; the other end of the connection pipe is fixedly connected with the rectifier through a bolt; the throttling valve comprises the left flange, the throttling valve plate and the right flange; the left flange and the right flange are located on the two sides of the throttling valve plate respectively; the left flange is fixedly connected with the throttling valve plate; the right flange is fixedly connected with the throttling valve plate. The throttling and pressure reduction combined device of the triangular hole throttling valve is superior in pressure reduction and rectification effect, airflow at an outlet is even and orderly, a flow field is stabilized without a straight pipe section, pressure and temperature can be measured directly, or the device can be connected with an inlet of a compressor directly, and the site requirements of fan testing are reduced greatly.
Description
Technical field
The present invention relates to a kind of air flow regulator, especially, in blower fan is measured, air-flow is carried out to the device of step-down current stabilization, be specially the reducing pressure by regulating flow combination unit that uses delthyrium throttle valve.
Background technique
In the application of fan test, usually need the incoming flow of negative pressure, contribute to like this to reduce the required air horsepower of blower fan, can reduce the hardware requirement of test.For the blower fan of some superhigh powers, conventionally adopt such method to test.
In prior art, conventionally adopt gate valve to carry out step-down throttling, when the pressure of required decline is larger, air-flow tends to very disorderly, thereby need one section of very long straight pipeline that disorderly air-flow is become evenly again, avoid the measurement of follow-up blower fan to produce adverse influence.Also have by honeycomb rectifier and carry out uniform air flow, can under to a certain degree, shorten the length of straight pipeline, but effect is still limited.The required pressure of fan test is less, and the air-flow after step-down is just more disorderly, and required straight length is longer, just higher to the requirement in place.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of reducing pressure by regulating flow combination unit of delthyrium throttle valve is provided, this reducing pressure by regulating flow combination unit can solve the required pressure of fan test more hour, air-flow after step-down is just more disorderly, required straight length is longer, to the requirement in place higher defect just, provide a kind of air-flow to produce the larger pressure loss, disorderly air-flow after step-down is effectively integrated simultaneously, make the air-flow of flowing through evenly dredge whole, meet the inlet pressure requirement of fan test, the adverse effect simultaneously because of air turbulence, fan performance not being produced.
According to technological scheme provided by the invention, the reducing pressure by regulating flow combination unit of delthyrium throttle valve comprises throttle valve, throttle valve valve plate, right flange, left flange, connecting tube, rectifier; One end of described connecting tube is fixedly connected with right flange by bolt; The other end of described connecting tube is fixedly connected with rectifier by bolt; Described throttle valve comprises left flange, throttle valve valve plate and right flange, and left flange and right flange lay respectively at throttle valve valve plate both sides, and described left flange and throttle valve valve plate are connected and fixed; Described right flange and throttle valve valve plate are connected and fixed; Described throttle valve valve plate is provided with 8 the first delthyriums that distribute along even circumferential, and right flange is provided with 8 second delthyriums along even circumferential distributing corresponding with the first delthyrium, and throttle valve valve plate is rotatable; The cylindrical end face of described rectifier is provided with densely covered through hole, between through hole, is not communicated with mutually.
As a further improvement on the present invention, described throttle valve, connecting tube, rectifier inner diameter D are identical; The length of described connecting tube is L1, and the proportionate relationship between the length L 1 of described throttle valve, connecting tube, rectifier inner diameter D and connecting tube is: 0.5D≤L1≤D.
As a further improvement on the present invention, the through-hole diameter of described rectifier is d, and the internal diameter of rectifier is D; The through-hole diameter d of described rectifier and the proportionate relationship between the inner diameter D of rectifier are: 0.01D≤d≤0.02D;
As a further improvement on the present invention, the length L 2 of described rectifier, the through-hole diameter of rectifier is d, the proportionate relationship between the length L 2 of described rectifier and the through-hole diameter d of rectifier is: 8d≤L2≤10d.
As a further improvement on the present invention, on described left flange, be provided with the waist type groove coordinating with handle.
As a further improvement on the present invention, the first delthyrium is identical with the second delthyrium shape, is obtuse angle isosceles triangle, and the first delthyrium is 20 ° with respect to the fan-shaped subtended angle a in the throttle valve valve plate center of circle, and fan-shaped subtended angle a is less than 22.5 °.
Compared with the prior art the present invention has the following advantages:
The present invention is simple in structure, compact, reasonable.The circulating area being comprised of several delthyriums distributes along even circumferential, airflow passes throttle valve, and in the time of effective step-down, air turbulence degree significantly reduces, and enters rectifier subsequently through connecting tube.Connect the small through hole of cylindrical body end face, in stream, large whirlpool fragmentation is reformed in the future, and the little whirlpool after fragmentation enters after small through hole, disorderly air-flow can be reformed in order, make even flow field consistent.Depressurization and rectification effect of the present invention is excellent, and the air-flow of outlet is uniform sequential, without straight length, with steady flow condition, can directly carry out pressure, thermometry, or directly connect compressor inlet, has greatly reduced the site requirements of fan test.
Accompanying drawing explanation
Fig. 1 is the plan view of structure of the present invention.
Fig. 2 is the structural representation of throttle valve.
Fig. 3 is the A-A schematic diagram of Fig. 2 throttle valve.
Fig. 4 is the structural representation of rectifier.
Embodiment
The present invention is below further described in connection with the embodiment in accompanying drawing:
As Figure 1-Figure 4, comprise that throttle valve 1, throttle valve valve plate 11, the first delthyrium 12, right flange 13, the second delthyrium 14, left flange 15, handle 16, groove 17, connecting tube 2, rectifier 3, through hole 31, throttle valve inner diameter D, connecting tube inner diameter D, rectifier inner diameter D, through-hole diameter d, the length L 1 of connecting tube are, the length L 2 of rectifier.
Described connecting tube 2 is positioned at the downstream of throttle valve 1, and one end of connecting tube 2 is fixedly connected with right flange 13 by bolt.Rectifier 3 is positioned at the downstream of connecting tube 2, and the other end of connecting tube 2 is fixedly connected with rectifier 3 by bolt.
Described throttle valve 1 comprises left flange 15, throttle valve valve plate 11 and right flange 13, and left flange 15 lays respectively at throttle valve valve plate 11 both sides with right flange 13, and described left flange 15 is connected and fixed with throttle valve valve plate 11; Described right flange 13 is connected and fixed with throttle valve valve plate 11; On throttle valve valve plate 11, be provided with 8 the first delthyriums 12, right flange 13 is provided with 8 second delthyriums 14 corresponding with the first delthyrium 12, and throttle valve valve plate 11 is rotatable.
The cylindrical end face of described rectifier 3 is provided with the through hole 31 that gathers, and between through hole 31, is not communicated with mutually.Described throttle valve 1, connecting tube 2, rectifier 3 inner diameter D are identical, and inner diameter D is 500mm; Described connecting tube 2 length L 1 are 300mm.The length of described connecting tube 2 is L1, and the proportionate relationship between described throttle valve 1, connecting tube 2, rectifier 3 inner diameter D and the length L 1 of connecting tube is: 0.5D≤L1≤D.
Through hole 31 diameter d of described rectifier 3 are 7mm, and the internal diameter of rectifier is D; The through-hole diameter d of described rectifier and the proportionate relationship between the inner diameter D of rectifier are: 0.01D≤d≤0.02D;
Described rectifier 3 length L 2 are 60mm; The length L 2 of described rectifier, the through-hole diameter of rectifier is d, the proportionate relationship between the length L 2 of described rectifier and the through-hole diameter d of rectifier is: 8d≤L2≤10d.
Described throttle valve valve plate 11 normal vector directions, to being outside equipped with two handles 16, are provided with the waist type groove 17 coordinating with handle 16 on left flange 15.Handle 16 can rotate along the track of groove 17, thereby drives throttle valve valve plate 11 to rotate, and throttle valve valve plate 11 makes 8 the first delthyriums 12 and 8 the second delthyriums 14 on right flange 13 form dislocation while rotating, thereby controls circulation area.
The first delthyrium 12 is identical with the second delthyrium 14 shapes, be obtuse angle isosceles triangle, the first delthyrium 12 is 20 ° with respect to the fan-shaped subtended angle a in throttle valve valve plate 2 centers of circle, and fan-shaped subtended angle a is less than 22.5 °, can guarantee that like this throttle valve 1 can be completely closed.Fan-shaped subtended angle a is less than 22.5 °.
The first delthyrium 12 of described throttle valve 1 and the second delthyrium 14 distribute and jointly form circulating area along even circumferential, and in the time of the 1 effective step-down of airflow passes throttle valve, air turbulence degree significantly reduces, and enter rectifier 3 subsequently through connecting tube 2.Connect the through hole 31 of rectifier 3 cylindrical body end faces, in stream, large whirlpool fragmentation is reformed in the future, and the little whirlpool after fragmentation enters after through hole 31, experiences sufficiently long straight length, disorderly air-flow can be reformed in order, make even flow field consistent.Depressurization and rectification effect of the present invention is excellent, and the air-flow of outlet is uniform sequential, without straight length, with steady flow condition, can directly carry out pressure, thermometry, or directly connect compressor inlet, has greatly reduced the site requirements of fan test.
Claims (5)
1. a reducing pressure by regulating flow combination unit for delthyrium throttle valve, is characterized in that: comprise throttle valve (1), connecting tube (2), rectifier (3), one end of described connecting tube (2) is fixedly connected with right flange (13) by bolt; The other end of described connecting tube (2) is fixedly connected with rectifier (3) by bolt; Described throttle valve (1) comprises left flange (15), throttle valve valve plate (11) and right flange (13), left flange (15) lays respectively at throttle valve valve plate (11) both sides with right flange (13), and described left flange (15) is connected and fixed with throttle valve valve plate (11); Described right flange (13) is connected and fixed with throttle valve valve plate (11); On described throttle valve valve plate (11), be provided with two handles (16); Described throttle valve valve plate (11) is provided with 8 the first delthyriums (12) that distribute along even circumferential, and right flange (13) is provided with 8 second delthyriums (14) that along even circumferential distribute corresponding with the first delthyrium (12); The end face of described rectifier (3) is provided with through hole (31), and through hole is not communicated with mutually between (31).
2. the reducing pressure by regulating flow combination unit of a kind of delthyrium throttle valve as claimed in claim 1, it is characterized in that: described throttle valve (1), connecting tube (2), rectifier (3) internal diameter (D) are identical, the length of described connecting tube is (L1), and the proportionate relationship between the length (L1) of described internal diameter (D) and connecting tube is: 0.5D≤L1≤D.
3. the reducing pressure by regulating flow combination unit of a kind of delthyrium throttle valve as claimed in claim 1, is characterized in that: the through-hole diameter of described rectifier is (d), and the internal diameter of rectifier is (D); Proportionate relationship between the internal diameter (D) of the through-hole diameter of described rectifier (d) and rectifier is: 0.01D≤d≤0.02D; 4, the reducing pressure by regulating flow combination unit of a kind of delthyrium throttle valve as claimed in claim 1, it is characterized in that: the length of described rectifier (L2), the through-hole diameter of rectifier is (d), and the proportionate relationship between the through-hole diameter (d) of the length of described rectifier (L2) and rectifier is: 8d≤L2≤10d.
4. the reducing pressure by regulating flow combination unit of a kind of delthyrium throttle valve as claimed in claim 1, is characterized in that: on described left flange (15), be provided with the waist type groove (17) coordinating with handle (16).
5. the reducing pressure by regulating flow combination unit of a kind of delthyrium throttle valve as claimed in claim 1, it is characterized in that: described the first delthyrium (12) is identical with the second delthyrium (14) shape, be obtuse angle isosceles triangle, described the first delthyrium (12) is 20 ° with respect to the fan-shaped subtended angle (a) in throttle valve valve plate (2) center of circle, and fan-shaped subtended angle (a) is less than 22.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561014.6A CN103573759A (en) | 2013-11-12 | 2013-11-12 | Throttling and pressure reduction combined device of triangular hole throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561014.6A CN103573759A (en) | 2013-11-12 | 2013-11-12 | Throttling and pressure reduction combined device of triangular hole throttling valve |
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|---|---|
| CN103573759A true CN103573759A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561014.6A Pending CN103573759A (en) | 2013-11-12 | 2013-11-12 | Throttling and pressure reduction combined device of triangular hole throttling valve |
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| CN (1) | CN103573759A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595293A (en) * | 2015-01-14 | 2015-05-06 | 华南农业大学 | Combined wind field generation device and method |
| CN105351296A (en) * | 2015-01-09 | 2016-02-24 | 新汶矿业集团有限责任公司 | Laminar flow device |
| CN106769064A (en) * | 2016-12-24 | 2017-05-31 | 中国科学院工程热物理研究所 | A kind of orifice-plate type back pressure regulator device |
| CN110056736A (en) * | 2019-04-03 | 2019-07-26 | 华电电力科学研究院有限公司 | A kind of arc panel pantographic adjustable contraction and its working method for coal-burning power plant's primary air piping |
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| JPH08193687A (en) * | 1995-01-17 | 1996-07-30 | Kubota Corp | Noise preventing structure of fluid control valve |
| CN2401874Y (en) * | 1999-11-18 | 2000-10-18 | 刘金禄 | Valve type orifice restrictor with tube bank rectifier |
| CN101427060A (en) * | 2006-04-18 | 2009-05-06 | 费希尔控制产品国际有限公司 | Fluid pressure reduction devices |
| CN201527286U (en) * | 2009-11-23 | 2010-07-14 | 天津市润泰自动化仪表有限公司 | Porous rectifier type throttling component |
| CN102735297A (en) * | 2012-07-20 | 2012-10-17 | 广州柏诚智能科技有限公司 | Prepositioned flow adjuster of ultrasonic flow meter |
| CN103291943A (en) * | 2013-06-17 | 2013-09-11 | 无锡杰尔压缩机有限公司 | Throttle dropping equipment |
| CN203500189U (en) * | 2013-09-10 | 2014-03-26 | 无锡杰尔压缩机有限公司 | Throttling and pressure reducing combination device using triangular hole throttling valve |
-
2013
- 2013-11-12 CN CN201310561014.6A patent/CN103573759A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193687A (en) * | 1995-01-17 | 1996-07-30 | Kubota Corp | Noise preventing structure of fluid control valve |
| CN2401874Y (en) * | 1999-11-18 | 2000-10-18 | 刘金禄 | Valve type orifice restrictor with tube bank rectifier |
| CN101427060A (en) * | 2006-04-18 | 2009-05-06 | 费希尔控制产品国际有限公司 | Fluid pressure reduction devices |
| CN201527286U (en) * | 2009-11-23 | 2010-07-14 | 天津市润泰自动化仪表有限公司 | Porous rectifier type throttling component |
| CN102735297A (en) * | 2012-07-20 | 2012-10-17 | 广州柏诚智能科技有限公司 | Prepositioned flow adjuster of ultrasonic flow meter |
| CN103291943A (en) * | 2013-06-17 | 2013-09-11 | 无锡杰尔压缩机有限公司 | Throttle dropping equipment |
| CN203500189U (en) * | 2013-09-10 | 2014-03-26 | 无锡杰尔压缩机有限公司 | Throttling and pressure reducing combination device using triangular hole throttling valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351296A (en) * | 2015-01-09 | 2016-02-24 | 新汶矿业集团有限责任公司 | Laminar flow device |
| CN105351296B (en) * | 2015-01-09 | 2018-11-20 | 新汶矿业集团有限责任公司 | Laminar flow device |
| CN104595293A (en) * | 2015-01-14 | 2015-05-06 | 华南农业大学 | Combined wind field generation device and method |
| CN104595293B (en) * | 2015-01-14 | 2017-02-01 | 华南农业大学 | Combined wind field generation device and method |
| CN106769064A (en) * | 2016-12-24 | 2017-05-31 | 中国科学院工程热物理研究所 | A kind of orifice-plate type back pressure regulator device |
| CN106769064B (en) * | 2016-12-24 | 2019-06-18 | 中国科学院工程热物理研究所 | A kind of orifice-plate type back pressure regulator device |
| CN110056736A (en) * | 2019-04-03 | 2019-07-26 | 华电电力科学研究院有限公司 | A kind of arc panel pantographic adjustable contraction and its working method for coal-burning power plant's primary air piping |
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Application publication date: 20140212 |