CN203422122U - Throttling device - Google Patents
Throttling device Download PDFInfo
- Publication number
- CN203422122U CN203422122U CN201320524115.1U CN201320524115U CN203422122U CN 203422122 U CN203422122 U CN 203422122U CN 201320524115 U CN201320524115 U CN 201320524115U CN 203422122 U CN203422122 U CN 203422122U
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- CN
- China
- Prior art keywords
- turning axle
- opening
- throttling element
- ring
- throttling
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- Expired - Lifetime
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Abstract
The utility model provides a throttling device. The throttling device comprises a first rotating shaft, a pipe flange, a throttling piece and a second rotating shaft. The throttling piece is an annular hole plate. The two ends of the pipe flange are connected with adjacent pipelines respectively, the inner side of a pipe body of the pipe flange is oppositely provided with a first opening and a second opening, the throttling piece is arranged inside the pipe body, the first end of the first rotating shaft is fixedly connected with the plate surface of the throttling piece, the second end of the first rotating shaft penetrates out of the first opening and extends out of the pipe body, the first end of the second rotating shaft is fixedly connected with the plate surface of the throttling piece, and the second end of the second rotating shaft is rotatably arranged in the second opening. The throttling piece is capable of rotating, the throttling piece is not abraded easily, scaling is not easily formed on the surface of the throttling piece, and the measuring accuracy is improved.
Description
Technical field
The utility model embodiment relates to mechanical technique, relates in particular to a kind of restriction device.
Background technology
In coal mine gas drainage process, in order to measure the gas pumping amount in mine and single extraction place, generally adopt orifice flowmeter to measure at present.
When prior art adopts orifice flowmeter, throttling element in the restriction device of orifice flowmeter is fixed in straight tube, during airflow passes throttling element, at throttling element place, form local contraction, thereby air-flow velocity increases, static pressure reduces, so it is poor to produce static pressure before and after throttling element, during measurement, by reading, static pressure is poor weighs the uninterrupted that air flow stream is crossed throttling element.Therefore, in prior art, throttling element easily weares and teares, and easily fouling of surface, causes larger measuring error.
Utility model content
The utility model provides a kind of restriction device, has realized rotating restriction device, has improved accuracy of measurement.
The utility model provides a kind of restriction device, comprising:
The first turning axle, pipe flange, throttling element and the second turning axle;
Wherein, described throttling element is ring-like orifice plate;
The two ends of described pipe flange connect respectively adjacent tubes, the body inner side of described pipe flange offers the first opening and the second opening relatively, it is inner that described throttling element is placed in described body, the plate face of the first end of described the first turning axle and described throttling element is fixed, it is outside that the second end of described the first turning axle extends to described body through described the first opening, the plate face of the first end of described the second turning axle and described throttling element is fixed, and the second end of described the second turning axle is arranged in described the second opening rotationally.
Described pipe flange is connected with the ring flange of adjacent tubes with the second ring flange by being arranged on first ring flange at described pipe flange two ends.
Described the first turning axle and described the second turning axle are column structure.
The second end of described the first turning axle is also provided with operating grip.
Described the first turning axle is placed in the part in described the first opening and is arranged with O-ring seal; Described the second turning axle is placed in the part in described the second opening and is arranged with packing ring.
Described O-ring seal is fixed on described the first opening inner side by the first securing member.
Described packing ring is fixed on described the second opening inner side by the second securing member.
The utility model by the first end of the first turning axle be fixed on throttling element, the first end of the second turning axle is fixed on throttling element and the second end of the second turning axle is arranged in the second opening rotationally, thereby this throttling element is rotating, throttling element is not easy to wear and surperficial less scaling, thereby has improved accuracy of measurement.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram while measuring in the utility model restriction device embodiment mono-;
Fig. 2 is the schematic diagram while stopping side in the utility model restriction device embodiment mono-;
Fig. 3 is the schematic diagram while stopping side in the utility model restriction device embodiment bis-;
Fig. 4 is the schematic diagram while measuring in the utility model restriction device embodiment bis-.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the schematic diagram while measuring in the utility model restriction device embodiment mono-, Fig. 2 is the schematic diagram while stopping side in the utility model restriction device embodiment mono-, as shown in Figures 1 and 2, the restriction device of the present embodiment comprises: the first turning axle 1, pipe flange 2, throttling element 3 and the second turning axle 4; Wherein, throttling element 3 is ring-like orifice plate; The two ends of pipe flange 2 connect respectively adjacent tubes, the body inner side of pipe flange 2 offers the first opening 5 and the second opening 6 relatively, throttling element 3 is placed in body inside, the plate face of the first end of the first turning axle 1 and throttling element 3 is fixed, the second end of the first turning axle 1 extends to body outside through the first opening 5, the plate face of the first end of the second turning axle 4 and throttling element 3 is fixed, and the second end of the second turning axle 4 is arranged in the second opening 6 rotationally.
In the present embodiment, throttling element 3 is annular orifice.Wherein, pipe flange 2 comprises the first ring flange, body and the second ring flange, and pipe flange 2 is connected with the ring flange of adjacent tubes with the second ring flange by being arranged on first ring flange at pipe flange 2 two ends.Particularly, the first ring flange is arranged at one end of the body of pipe flange 2, and the second ring flange is arranged at the other end of the body of pipe flange 2.Alternatively, body inner side at pipe flange 2 offers the first opening 5 matching with the first turning axle 1 and the second opening 6 matching with the second turning axle 4 relatively, being respectively used to the first turning axle 1 is connected with the throttling element 3 that is placed in body inside through tube body wall with the second turning axle 4, and the gas outside body can not enter in body, alternatively, the plate face of the first end of the first turning axle 1 and throttling element 3 is fixed, wherein, the groove that a shape with the first end of the first turning axle 1 matches can be set on throttling element 3, the first end of the first turning axle 1 is placed in this groove, and be fixed by pin, the plate face of the first end of the second turning axle 4 and throttling element 3 is fixed, and wherein, the groove that a shape with the first end of the second turning axle 4 matches can be set on throttling element 3, the first end of the second turning axle 4 is placed in this groove, and is fixed by pin.Alternatively, the second end of the first turning axle 1 extends to body outside through the first opening 5, be convenient to control the rotation of the first turning axle 1, further, because the first end of the first turning axle 1 is fixedly installed on throttling element 3, the first end of the second turning axle 4 is fixedly installed on throttling element 3 and the second end of the second turning axle 4 is arranged in the second opening 6 rotationally, and the second end of the second turning axle 4 is stuck in outside tube wall, when the first turning axle 1 rotation, can drive throttling element 3 rotations.Further, the first turning axle 1 and the second turning axle 4 can be column structure, and accordingly, above-mentioned groove is cylindrical recesses.
Particularly, when carrying out flow measurement, by rotate the first turning axle 1 by throttling element 3 rotation to vertical with air flow direction as shown in Figure 1 position, can carry out reading static pressure poor; When not carrying out flow measurement; by rotating the first turning axle 1, throttling element 3 is rotated to parallel with air flow direction as shown in Figure 2 position; now the air flow inlet of throttling element 3 is not subject to the wearing and tearing of gas and dirt; can effectively protect throttling element 3; make it intact, meanwhile, air flow direction is parallel with throttling element 3 can be washed away the dirt of the dirt on throttling element 3 surfaces and the place ahead accumulation effectively; can guarantee that surveyed air flow state meets standard code more, thereby improve accuracy of measurement.
The utility model embodiment by the first end of the first turning axle be fixed on throttling element, the first end of the second turning axle is fixed on throttling element and the second end of the second turning axle is arranged in the second opening rotationally, thereby this throttling element is rotating, throttling element is not easy to wear and surperficial less scaling, thereby has improved accuracy of measurement.
Fig. 3 is the schematic diagram while stopping side in the utility model restriction device embodiment bis-, Fig. 4 is the schematic diagram while measuring in the utility model restriction device embodiment bis-, as shown in Figures 3 and 4, in the present embodiment, restriction device is on the basis of structure described in above-described embodiment one, further, the second end of the first turning axle 1 is also provided with operating grip.
When not carrying out flow measurement, as shown in Figure 3, the plate face of throttling element 3 is parallel with air flow direction, when carrying out flow measurement, thus can be by operating grip clockwise or be rotated counterclockwise 90 degree and drive throttling elements 3 rotations to vertical with air flow direction as shown in Figure 4 position.
Further, better for sealing effectiveness, the first turning axle 1 is placed in the part in the first opening 5 and is arranged with O-ring seal 7; The second turning axle 4 is placed in the part in the second opening 6 and is arranged with packing ring 8.Further, for fear of O-ring seal 7, move up and down, O-ring seal 7 is fixed on the first opening 5 inner sides by the first securing member 9, and in like manner, packing ring 8 is fixed on the second opening 6 inner sides by the second securing member 10.
In the present embodiment, the structure of the first opening 5 can comprise two parts: tube wall inner circle barrel and tube wall outer cylindrical wall.O-ring seal 7 is placed on the first turning axle 1, and is placed in the first opening 5, and the first securing member 9 is fixed on O-ring seal 7 and the first opening 5.Wherein, the inner side shape of O-ring seal 7 and the shape of the first turning axle 1 match, the interior shape of the outer shape of O-ring seal 7 and the first opening 5 matches, accordingly, the first securing member 9 can be circular plate, and wherein, the diameter of interior ring is more than or equal to the diameter of the first turning axle 1, the diameter of outer shroud can be the same with the outer dia of the first opening 5, and can be fixed on the first opening 5 by pin.Alternatively, the structure of the first opening 5 can also be the structure of other shape, and accordingly, the outer shape of O-ring seal 7 is made correspondingly and changed, and the utility model does not limit at this.
Further, the structure of the second opening 6 can comprise two parts: tube wall inner circle barrel and tube wall outer cylindrical wall.Packing ring 8 is placed on the second turning axle 4, and is placed in the second opening 6, and the second securing member 10 can be plectane, and can be fixed on the second opening 6 by pin.Wherein, the inner side shape of packing ring 8 and the shape of the second turning axle 4 match, and the interior shape of the outer shape of packing ring 8 and the second opening 6 matches.Alternatively, the structure of the second opening 6 can also be the structure of other shape, and accordingly, the outer shape of packing ring 8 is made correspondingly and changed, and the present invention does not limit at this.
The utility model embodiment is fixed on throttling element by the first end of the first turning axle, the first end of the second turning axle is fixed on throttling element and the second end of the second turning axle is arranged in the second opening rotationally, thereby this throttling element is rotating, throttling element is not easy to wear and surperficial less scaling, thereby improved accuracy of measurement, further, the first turning axle is placed in the part that part in the first opening and the second turning axle be placed in the second opening and is arranged with respectively O-ring seal and packing ring, preventing from managing outer gas enters in pipe, thereby improved further accuracy of measurement.
Finally it should be noted that: each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit above; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a restriction device, is characterized in that, comprising:
The first turning axle, pipe flange, throttling element and the second turning axle;
Wherein, described throttling element is ring-like orifice plate;
The two ends of described pipe flange connect respectively adjacent tubes, the body inner side of described pipe flange offers the first opening and the second opening relatively, it is inner that described throttling element is placed in described body, the plate face of the first end of described the first turning axle and described throttling element is fixed, it is outside that the second end of described the first turning axle extends to described body through described the first opening, the plate face of the first end of described the second turning axle and described throttling element is fixed, and the second end of described the second turning axle is arranged in described the second opening rotationally.
2. device according to claim 1, is characterized in that, described pipe flange is connected with the ring flange of adjacent tubes with the second ring flange by being arranged on first ring flange at described pipe flange two ends.
3. device according to claim 1, is characterized in that, described the first turning axle and described the second turning axle are column structure.
4. device according to claim 1, is characterized in that, the second end of described the first turning axle is also provided with operating grip.
5. according to the device described in any one in claim 1～4, it is characterized in that, described the first turning axle is placed in the part in described the first opening and is arranged with O-ring seal; Described the second turning axle is placed in the part in described the second opening and is arranged with packing ring.
6. device according to claim 5, is characterized in that, described O-ring seal is fixed on described the first opening inner side by the first securing member.
7. device according to claim 5, is characterized in that, described packing ring is fixed on described the second opening inner side by the second securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524115.1U CN203422122U (en) | 2013-08-26 | 2013-08-26 | Throttling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524115.1U CN203422122U (en) | 2013-08-26 | 2013-08-26 | Throttling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422122U true CN203422122U (en) | 2014-02-05 |
Family
ID=50021217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320524115.1U Expired - Lifetime CN203422122U (en) | 2013-08-26 | 2013-08-26 | Throttling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422122U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453949A (en) * | 2013-08-26 | 2013-12-18 | 淮南矿业(集团)有限责任公司 | Throttle device |
| CN104990603A (en) * | 2015-08-07 | 2015-10-21 | 成都国光电子仪表有限责任公司 | Throttling mechanism |
| CN104990604A (en) * | 2015-08-07 | 2015-10-21 | 成都国光电子仪表有限责任公司 | Metering throttle pipe section |
-
2013
- 2013-08-26 CN CN201320524115.1U patent/CN203422122U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453949A (en) * | 2013-08-26 | 2013-12-18 | 淮南矿业(集团)有限责任公司 | Throttle device |
| CN104990603A (en) * | 2015-08-07 | 2015-10-21 | 成都国光电子仪表有限责任公司 | Throttling mechanism |
| CN104990604A (en) * | 2015-08-07 | 2015-10-21 | 成都国光电子仪表有限责任公司 | Metering throttle pipe section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |