CN2175335Y - Flow rate adjusting valve for large pipe - Google Patents
Flow rate adjusting valve for large pipe Download PDFInfo
- Publication number
- CN2175335Y CN2175335Y CN 93247590 CN93247590U CN2175335Y CN 2175335 Y CN2175335 Y CN 2175335Y CN 93247590 CN93247590 CN 93247590 CN 93247590 U CN93247590 U CN 93247590U CN 2175335 Y CN2175335 Y CN 2175335Y
- Authority
- CN
- China
- Prior art keywords
- iron hoop
- axostylus axostyle
- valve
- adjusting valve
- pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model relates to a flow rate adjusting valve for a large pipe. The casing of the adjusting valve is composed of a pipe body which can be jogged with a pipeline, the inner part of the adjusting valve is provided with a rubber ball and a steel ring, the size of a ball body is adjusted by the mutual match of the compressed air and a gravity shaft rod, and the goal of controlling the water flow is achieved. The flow rate adjusting valve is used for adjusting the circulating water flow of the large pipe of thermal power plants.
Description
The utility model relates to a kind of fluid control device, and the large-caliber flow regulating valve of quantity of circulating water is regulated in particularly a kind of thermal power plant that is applicable to.
In order to guarantee that the thermal power plant steam turbine set moves under optimal vacuum pressure, need on it circulates water channel, flow control valve be installed.But because this circulating water caliber is bigger, also suitable without comparison at present modulating valve.Existing modulating valve mainly contains two kinds of flapper valve and spherical valves, and wherein, the adjusting function of flapper valve is relatively poor, and ball valve is when caliber surpasses 1 meter, and volume is very big, and the mounting point is limited, and the bigger moment of operation need, often regulate poor reliability, thereby be difficult to satisfy job requirement.Therefore, on the circulating water pipeline in existing thermal power plant modulating valve is not installed all, thereby is difficult to guarantee that steam turbine set moves under optimum vacuum, make electrical production be subjected to very big economic loss.
It is little that the purpose of this utility model provides a kind of volume, is convenient to the large-caliber flow regulating valve that Flow Adjusting Performance is good is installed.
Above-mentioned purpose is realized by following technological scheme: in valve casing (1) the inside, the global body of cored iron that has a iron hoop (3) to form by multistage mutual hanging sleeve, a rubber sacculus (12) is arranged in the iron hoop spheroid, sacculus is connected to the tracheae that charges and discharge gas on (12), on the iron hoop of the two ends of iron hoop spheroid minimum, each is connected with screw thread on the axostylus axostyle (6) by screw, axostylus axostyle (6) stretches out valve casing (1) through seal ring (5), pulley (7) is equipped with on the axostylus axostyle top, on the valve body of axostylus axostyle (6) both sides, be welded with iron hoop (4) and pulley (8) respectively, a rope (9) is arranged, one end is fixed on the iron hoop (4), the pulley on axostylus axostyle (7), and the pulley on the valve body (8) links to each other with balancing weight (10).
According to the modulating valve that such scheme is made, be installed on the big-diameter pipeline, make axostylus axostyle in horizontal direction.When charging and discharging tracheae when being connected to suction tude on the sacculus, pressurized gas charges into sacculus, makes inflation, and the blocking pipe section diminishes flow.When charging and discharging tracheae when being connected to exhaust duct, gas is discharged sacculus in the sacculus, and sacculus shrinks, and outside iron hoop spheroid is followed contraction, and flow increases, and regulates the aeration quantity of sacculus, gets final product control flow rate, but the aperture of the length indicating valve that the valve casing upper shaft lever stretches out.This device, simple in structure, easy for installation, can adapt to the needs that large-caliber flow is regulated fully.
Introduce a kind of embodiment below in conjunction with accompanying drawing.
Fig. 1 is the plan view of modulating valve.
Fig. 2 is the plan view of rubber sacculus.
Fig. 3 is the plan view of iron hoop.Fig. 4 is its plan view.
Fig. 5 is the plan view of the end sacculus ring-type film of rubber sacculus.Fig. 6 is its plan view.Fig. 7, Fig. 8 are respectively the plan view and the plan views of remaining sacculus ring-type film.
As seen from Figure 1, the valve casing of this modulating valve (1) is that one section steel pipe is made, the inside is the spheroid that a multistage iron hoop (3) hanging sleeve is formed together, the descending difference of diameter of iron hoop (3), the upper limb (14) of big iron hoop, hang over by the lower edge (16) of 6 ball bearings (15) with adjacent little iron hoop, mutual frictional force is very little, all there is an inner edge (13) each iron hoop lower end, when the iron hoop ball shrinks, the lower edge of iron hoop (16) offsets with adjacent iron hoop inner edge (13), so the spheroid of this annulus composition is compressible in the iron hoop chamber (2) fully.On the top of iron hoop spheroid outermost end one-level steel ring is a screw, with the threads engaged on the axostylus axostyle (6), axostylus axostyle (6) stretches out valve casing (1) outside by seal ring (5), on axostylus axostyle (6) top, pulley (7) is housed, axostylus axostyle (6) level is installed as good, valve casing outside in axostylus axostyle (6) top, be welded with the fixedly iron hoop of wire rope (4), in the below of axostylus axostyle (6) valve casing outside, pulley (8) is housed, wire rope (9) one ends are fixed on the iron hoop (4), arrive the inboard of pulley (8) again through the top of pulley (7), be hung with balancing weight (10) endways.Because the pulling force of balancing weight is converted on axostylus axostyle (6) along the inside pressure of axostylus axostyle, the spheroid compression that this power is formed the iron hoop (3) in the valve.In iron hoop spheroid the inside, a rubber sacculus (12) of being made up of multistage rubber ring (11) is arranged.The upper limb (17) of rubber ring (11) is bonded together with the lower edge (18) of adjacent rubber ring, and a steel wire ring (19) is all arranged in each glue ring.The upper limb of the rubber ring of outermost end is airtight as shown in Figure 5.Other rubber rings all are cavity ring, and are bonded together by the upper limb (17) and the lower edge (18) of adjacent two rings.Also can not interfere mutually after this rubber ring compression.On rubber sacculus (12), be connected to tracheae.During use, inflated in ball by tracheae, glueballs promptly expands, and the iron hoop ball of outside also increases thereupon, and the flow of pipeline reduces.When the needs enlargement discharge, by the tracheae exhaust, the iron hoop ball shrinks under the pressure that pouring weight produces and gets final product.Axostylus axostyle stretches out the length of valve casing, aperture that can indicating valve.
Claims (1)
1, a kind of fluid control device, it is a kind of large-caliber flow regulating valve, it is characterized in that: in valve casing (1) the inside, the global body of cored iron that has a iron hoop (3) to form by multistage mutual hanging sleeve, a rubber sacculus (12) is arranged in the iron hoop spheroid, sacculus is connected to the tracheae that charges and discharge gas on (12), on the iron hoop of the two ends of iron hoop spheroid minimum, each is connected with screw thread on the axostylus axostyle (6) by screw, axostylus axostyle (6) stretches out valve casing (1) through seal ring (8), pulley (7) is equipped with on the axostylus axostyle top, on the valve body of axostylus axostyle (6) both sides, is welded with iron hoop (4) and pulley (8) respectively, a rope (9) is arranged, one end is fixed on the iron hoop (4), the pulley on axostylus axostyle (7), and the pulley on the valve body (8) links to each other with balancing weight (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247590 CN2175335Y (en) | 1993-12-11 | 1993-12-11 | Flow rate adjusting valve for large pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247590 CN2175335Y (en) | 1993-12-11 | 1993-12-11 | Flow rate adjusting valve for large pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2175335Y true CN2175335Y (en) | 1994-08-24 |
Family
ID=33819951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247590 Expired - Fee Related CN2175335Y (en) | 1993-12-11 | 1993-12-11 | Flow rate adjusting valve for large pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2175335Y (en) |
-
1993
- 1993-12-11 CN CN 93247590 patent/CN2175335Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |