CN103216437B - For the gas cushion of compressor test unit - Google Patents
For the gas cushion of compressor test unit Download PDFInfo
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- CN103216437B CN103216437B CN201310110128.9A CN201310110128A CN103216437B CN 103216437 B CN103216437 B CN 103216437B CN 201310110128 A CN201310110128 A CN 201310110128A CN 103216437 B CN103216437 B CN 103216437B
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Abstract
The invention belongs to compressor test unit technical field, be specifically related to a kind of gas cushion for compressor test unit. This gas cushion comprises the cylindrical shell being erected on bearing, and the upper and lower both sides of described cylindrical shell are equipped with end socket, and the lowest part of the end socket in cylindrical shell downside is provided with blow-off pipe; On described cylindrical shell, be respectively arranged with air inlet pipe and gas outlet and take over, the mouth of pipe that described air inlet pipe is positioned at cylindrical shell is set near and towards cylinder body bottom, the mouth of pipe place of described air inlet pipe is provided with the ventilation terminal that the gas uniform for making in air inlet pipe is sent. The present invention has avoided the generation of the problems such as suction temperature pressure oscillation, guarantee the uniformity of gas buffer, and effectively prevented the pulsation impact of bubble on gas in air inlet pipe, thus ensure the stability of flow measurement, greatly improve the accuracy of flow measurement. The present invention can meet the test requirements document of refrigerant gas cooling method, and reaches the object of test stable state.
Description
Technical field
The invention belongs to compressor test unit technical field, be specifically related to a kind of gas cushion for compressor test unit.
Background technology
At present the gasmetry instrument in compressor test unit generally all adopts vortex-shedding meter, and the advantage of vortex-shedding meter is that precision is high, good stability, reaction speed are fast. But because tested compressor is all generally piston machine or screw machine, described piston machine or screw machine can produce certain gas in running in system, this gas meeting produces more than 5% measure error to the measurement of vortex-shedding meter, thereby has had a strong impact on the accuracy that compressor performance is measured.
Pulsation damper is one of requisite equipment in compressor test unit, its Main Function is: the lower refrigerant gas of the degree of superheat of being discharged by economizer, after gas flowmeter is measured flow, enter pulsation damper, the inlet ductwork of pulsation damper stretches into pulsation damper bottom, to make cold-producing medium realize as much as possible buffering in buffer, thereby reduce the impact that gas is measured vortex-shedding meter.
The structure of existing positive displacement compressor experimental rig gas cushion used as shown in Figure 1, 2, gas cushion in Fig. 1 is taken over 6 by bearing 1, blow-off pipe 2, elliptoid end socket 3, cylindrical shell 4, air inlet pipe 5 and gas outlet and is formed, the buffer container of two end sockets 3 and the common composition closed of cylindrical shell 4.
As seen from Figure 1, gas cushion of the prior art rely on merely cold-producing medium have in larger-diameter buffer container flow and reduce flowing velocity, buffer is comparatively single, therefore in the time testing, be easy to occur cushioning insufficient and bring certain gas, causing the measurement of vortex-shedding meter to occur fluctuation.
In addition, in process of the test, bottom in gas cushion has a small amount of liquid refrigerant, and top is saturated refrigerant gas, when gas enters in gas cushion by air inlet pipe 5, local meeting produces bubble, bubble surface and liquid carry out heat exchange, now liquid evaporation, the temperature of reduction gas, because surface area and the liquid contact surface of bubble are long-pending limited, so do not reach good heat-transfer effect, just there will be some problems, such as: suction temperature pressure oscillation etc., these problems can cause flow measurement fluctuation equally.
Summary of the invention
The object of this invention is to provide a kind of gas cushion for compressor test unit, this gas cushion can reduce and even stop the impact that gas is measured vortex-shedding meter, thereby can meet the test requirements document of refrigerant gas cooling method, and reach the object of test stable state.
For achieving the above object, the technical solution adopted in the present invention is: a kind of gas cushion for compressor test unit, comprise the cylindrical shell being erected on bearing, the upper and lower both sides of described cylindrical shell are equipped with end socket, and the lowest part of the end socket in cylindrical shell downside is provided with blow-off pipe; On described cylindrical shell, be respectively arranged with air inlet pipe and gas outlet and take over, the mouth of pipe that described air inlet pipe is positioned at cylindrical shell is set near and towards cylinder body bottom, the mouth of pipe place of described air inlet pipe is provided with the ventilation terminal that the gas uniform for making in air inlet pipe is sent.
Meanwhile, the present invention can also be able to further realization by following technical measures:
Preferably, described ventilation terminal is be convenient to be connected with the air inlet pipe mouth of pipe cylindric, on the barrel of cylindric ventilation terminal, is evenly equipped with wind distributing hole.
Further, in described cylindrical shell, be provided with the horizontal pulsation suppressing plate in cylindrical shell inner side, in described pulsation suppressing plate, be evenly equipped with air passing hole; Described air inlet pipe extends downward the end socket place of cylindrical shell downside through pulsation suppressing plate; The mouth of pipe bottom in inner barrel that the plate top of described pulsation suppressing plate is taken over lower than described gas outlet, and at the bottom of the plate of described pulsation suppressing plate higher than the top of described ventilation terminal.
Further, described pulsation suppressing plate is skewed layout in cylindrical shell, and pulsation suppressing plate extends to the internal face place of cylindrical shell obliquely from the outboard tube wall of described air inlet pipe.
Preferably, the percent opening of described pulsation suppressing plate is 30～50%.
Preferably, described pulsation suppressing plate is provided with multilayer from top to bottom, and the incline direction of this multilayer pulsation suppressing plate is identical.
Beneficial effect of the present invention is:
1), the present invention is provided with ventilation terminal at the mouth of pipe place of air inlet pipeline, ventilation terminal is tubular, and be evenly equipped with wind distributing hole on the barrel of tubular ventilation terminal, the mode that refrigerant gas in air inlet pipeline is sent into by porous thus enters in the buffer container of the sealing being made up of end socket and cylindrical shell, thereby ensure that refrigerant gas can comparatively be evenly distributed in the inner chamber of buffer container, the mode that this porous is sent into not only can be in cylindrical shell liquid refrigerant and gas refrigerant between realize good heat-transfer effect, thereby avoid the generation of the problems such as suction temperature pressure oscillation, guarantee the uniformity of gas buffer, and effectively prevent that bubble from affecting the pulsation of gas in air inlet pipe.
2), the present invention is also provided with the horizontal pulsation suppressing plate in cylindrical shell inner side in buffer container, in described pulsation suppressing plate, be evenly equipped with air passing hole, and pulsation suppressing plate is set to the arrangement that tilts to extend to the internal face top of cylindrical shell from the outboard tube wall of air inlet pipe. The filtration of carrying under one's arms in refrigerant gas has not only been filtered in the setting of pulsation suppressing plate oil droplet, has also prevented that outlet pipe from being that during gas outlet is taken over, air pulsing returns the impact bringing effectively.
3) the pulsation suppressing plate, in the present invention has increased flow-disturbing area, has further strengthened gas buffer effect, thereby has ensured the stability of flow measurement, has greatly improved the accuracy of flow measurement.
Brief description of the drawings
Fig. 1 is the structural representation of gas cushion in prior art.
Fig. 2 is the A-A generalized section of Fig. 1.
Fig. 3 is the structural representation of gas cushion in the present invention.
Fig. 4 is the B-B generalized section of Fig. 3.
In figure, the implication of mark is as follows:
1-bearing, 2-blow-off pipe, 3-end socket, 4-cylindrical shell 41-pulsation suppressing plate
42-air passing hole, 5-air inlet pipe, 51-ventilation terminal, 6-gas outlet is taken over
Detailed description of the invention
As shown in Figure 3, a kind of gas cushion for compressor test unit, comprises the cylindrical shell 4 being erected on bearing 1, and the upper and lower both sides of described cylindrical shell 4 are equipped with end socket 3, and the lowest part of the end socket 3 in cylindrical shell 4 downsides is provided with blow-off pipe 2; On described cylindrical shell 4, be respectively arranged with air inlet pipe 5 and gas outlet and take over 6, the mouth of pipe that described air inlet pipe 5 is positioned at cylindrical shell 4 is set near and towards cylindrical shell 4 bottoms, the mouth of pipe place of described air inlet pipe 5 is provided with the ventilation terminal 51 that the gas uniform for making in air inlet pipe 5 is sent.
Preferably, as shown in Figure 3, described ventilation terminal 51 is be convenient to be connected with air inlet pipe 5 mouths of pipe cylindric, on the barrel of cylindric ventilation terminal 51, is evenly equipped with wind distributing hole.
Further, as shown in Figure 3,4, in described cylindrical shell 4, be provided with the horizontal pulsation suppressing plate 41 in cylindrical shell inner side, in described pulsation suppressing plate 41, be evenly equipped with air passing hole 42; Described air inlet pipe 5 extends downward end socket 3 places of cylindrical shell 4 downsides through pulsation suppressing plate 41; 6 the mouth of pipe bottom in cylindrical shell 4 inside is taken on the plate top of described pulsation suppressing plate 41 lower than described gas outlet, and at the bottom of the plate of described pulsation suppressing plate 41 higher than the top of described ventilation terminal 51.
Pulsation suppressing plate 41 is arranged between the mouth of pipe bottom in cylindrical shell 4 inside and the top of ventilation terminal 51 of gas outlet adapter 6, be to take over 6 in order to ensure first entering again gas outlet after pulsation suppressing plate 41 bufferings from refrigerant gas out in ventilation terminal 51, thereby ensured gas buffer effect.
Further, described pulsation suppressing plate 41 is skewed layout in cylindrical shell 4, and pulsation suppressing plate 41 extends to the internal face place of cylindrical shell 4 obliquely from the outboard tube wall of described air inlet pipe 5.
The pulsation suppressing plate 41 of skewed layout, in ensureing gas buffer effect, also plays guiding gas and takes over 6 mobile guide effects to gas outlet, has further realized the regularity and stability of gas flow.
Preferably, the percent opening of described pulsation suppressing plate 41 is 30～50%, the ratio of plate face area of the perforated area that described percent opening pulses in suppressing plate 41 and pulsation suppressing plate 41.
Preferably, as shown in Figure 3, described pulsation suppressing plate 41 is provided with multilayer from top to bottom, and the incline direction of this multilayer pulsation suppressing plate 41 is identical.
Multilayer pulsation suppressing plate 41 the further buffering effect that improves gas is set, ensured the stability of flow measurement.
Be described further below in conjunction with 3,4 pairs of courses of work of the present invention of Figure of description.
Gas cushion in Fig. 3 comprises following part: bearing 1, blow-off pipe 2, elliptoid end socket 3, cylindrical shell 4, air inlet pipe 5, gas outlet takes over 6, air inlet pipe 5 is along the axis direction of cylindrical shell 4 to downward-extension, the mouth of pipe place of described air inlet pipe 5 is provided with the ventilation terminal 51 of tubular, the pulsation suppressing plate 41 that extends to obliquely the internal face place of cylindrical shell 4 from the outboard tube wall of described air inlet pipe 5 is installed in described cylindrical shell 4, pulsation suppressing plate 41 is set to two-layer from top to bottom, and is evenly equipped with air passing hole 42 on the plate face of pulsation suppressing plate 41.
The bottom mouth of pipe of air inlet pipe 5 changes into through ventilation terminal 51 mode that porous is sent, and has ensured the uniformity that gas is sent on the one hand, has also prevented on the other hand the pulsation impact of bubble on gas in air inlet pipe 5.
Pulsation suppressing plate 41 is set to altogether inclination and installs two-layer, and the percent opening of pulsation suppressing plate 41 is 30～50%, refrigerant gas pressure and temperature after pulsation suppressing plate 41 all reduces, can effectively the oil droplet in gas be filtered out on the one hand thus, also prevent that on the other hand gas outlet from taking over 6 is that in outlet pipe, air pulsing exerts an influence to the measurement of vortex-shedding meter.
What the gas cushion in the present invention adopted is that material is Q345R, and operating temperature is at-20 DEG C～150 DEG C, and operating pressure is less than 16Mpa; Working media is cold-producing medium, such as being R22 and R134a. Facts have proved, in process of the test, refrigerant gas, after the gas cushion in the present invention, can ensure the stably measured of flow effectively, and the degree of accuracy of measurement volumes flow can reach 1%.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skill in the art make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (1)
1. for a gas cushion for compressor test unit, comprise and being erected on bearing (1)Cylindrical shell (4), the upper and lower both sides of described cylindrical shell (4) are equipped with end socket (3), under cylindrical shell (4)The lowest part of the end socket (3) of side is provided with blow-off pipe (2); On described cylindrical shell (4), be respectively arranged with into(6) are taken in tracheae (5) and gas outlet, and described air inlet pipe (5) is positioned at the mouth of pipe of cylindrical shell (4) and establishesBe set near and towards cylindrical shell (4) bottom, it is characterized in that: the mouth of pipe place of described air inlet pipe (5) establishesBe equipped with the ventilation terminal (51) that the gas uniform for making in air inlet pipe (5) is sent;
Described ventilation terminal (51) is be convenient to be connected with air inlet pipe (5) mouth of pipe cylindric, cylindric clothOn the barrel of wind device (51), be evenly equipped with wind distributing hole;
In described cylindrical shell (4), be provided with the horizontal pulsation suppressing plate (41) in cylindrical shell inner side, described pulsationIn suppressing plate (41), be evenly equipped with air passing hole (42); Described air inlet pipe (5) is through pulsation suppressing plate (41)The end socket (3) that extends downward cylindrical shell (4) downside is located; The plate top of described pulsation suppressing plate (41) is lowTake over the mouth of pipe bottom in cylindrical shell (4) inside of (6) in described gas outlet, and described pulsation suppressesAt the bottom of the plate of plate (41) higher than the top of described ventilation terminal (51);
Described pulsation suppressing plate (41) is skewed layout in cylindrical shell (4), and pulsation suppressing plate (41)Extend to obliquely the internal face place of cylindrical shell (4) from the outboard tube wall of described air inlet pipe (5);
The percent opening of described pulsation suppressing plate (41) is 30～50%;
Described pulsation suppressing plate (41) is provided with multilayer from top to bottom, and this multilayer pulsation suppressing plate (41)Incline direction identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110128.9A CN103216437B (en) | 2013-03-29 | 2013-03-29 | For the gas cushion of compressor test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110128.9A CN103216437B (en) | 2013-03-29 | 2013-03-29 | For the gas cushion of compressor test unit |
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| Publication Number | Publication Date |
|---|---|
| CN103216437A CN103216437A (en) | 2013-07-24 |
| CN103216437B true CN103216437B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310110128.9A Active CN103216437B (en) | 2013-03-29 | 2013-03-29 | For the gas cushion of compressor test unit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840460A (en) * | 2016-04-05 | 2016-08-10 | 北京化工大学 | Pipeline airflow pulsation attenuation device of grid reciprocating compressor |
| CN109546008B (en) * | 2017-09-22 | 2020-11-06 | 清华大学 | Preparation method of organic light emitting diode |
| CN111624054B (en) * | 2020-05-12 | 2022-10-21 | 北京市医疗器械检验所 | Buffer for releasing compressed gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507159A (en) * | 1994-04-25 | 1996-04-16 | Tecumseh Products Company | Suction accumulator vibration damper |
| CN201321962Y (en) * | 2008-07-30 | 2009-10-07 | 杨勇华 | Snubber |
| CN201771726U (en) * | 2010-09-17 | 2011-03-23 | 周绍毅 | Pressure measurement buffer |
| CN102788001A (en) * | 2012-07-12 | 2012-11-21 | 天津渤天化工有限责任公司 | Vibration eliminating device for outlet of compressor |
| CN102872769A (en) * | 2012-09-28 | 2013-01-16 | 神华集团有限责任公司 | Gas distributor and slurry bed reactor and crude carbinol synthetic system both comprising same |
| CN102895922A (en) * | 2012-10-23 | 2013-01-30 | 上海戊正工程技术有限公司 | Industrial plate type reactor for preparing glycol by hydrogenating oxalate or preparing alcohol by hydrogenating ester |
-
2013
- 2013-03-29 CN CN201310110128.9A patent/CN103216437B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507159A (en) * | 1994-04-25 | 1996-04-16 | Tecumseh Products Company | Suction accumulator vibration damper |
| CN201321962Y (en) * | 2008-07-30 | 2009-10-07 | 杨勇华 | Snubber |
| CN201771726U (en) * | 2010-09-17 | 2011-03-23 | 周绍毅 | Pressure measurement buffer |
| CN102788001A (en) * | 2012-07-12 | 2012-11-21 | 天津渤天化工有限责任公司 | Vibration eliminating device for outlet of compressor |
| CN102872769A (en) * | 2012-09-28 | 2013-01-16 | 神华集团有限责任公司 | Gas distributor and slurry bed reactor and crude carbinol synthetic system both comprising same |
| CN102895922A (en) * | 2012-10-23 | 2013-01-30 | 上海戊正工程技术有限公司 | Industrial plate type reactor for preparing glycol by hydrogenating oxalate or preparing alcohol by hydrogenating ester |
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| CN103216437A (en) | 2013-07-24 |
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Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee before: HEFEI GENERAL MACHINERY Research Institute |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee before: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. |
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