CN202348742U - Orifice plug for centrifugal compressor - Google Patents
Orifice plug for centrifugal compressor Download PDFInfo
- Publication number
- CN202348742U CN202348742U CN 201120482742 CN201120482742U CN202348742U CN 202348742 U CN202348742 U CN 202348742U CN 201120482742 CN201120482742 CN 201120482742 CN 201120482742 U CN201120482742 U CN 201120482742U CN 202348742 U CN202348742 U CN 202348742U
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- CN
- China
- Prior art keywords
- orifice plug
- centrifugal compressor
- gas
- sealing
- air
- 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 - Lifetime
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Abstract
An orifice plug for a centrifugal compressor comprises a body. An air inlet (1) at one end of the body extends inwards to form an air inlet channel (2), an air outlet (3) on the body extends inwards to form an air outlet channel (4) which is communicated with the air inlet channel (2), a screwed hole (5) is arranged at the other end of the body, the outside is provided with screw threads (6), and a round table (7) is arranged at an air inlet end. The orifice plug is placed in an air sealing hole built-in a machine casing of the centrifugal compressor, circulation of air sealing gas and throttling and decompression functions are achieved, and energy-saving performance of a machine unit is improved accordingly.
Description
Technical field
The utility model relates to a kind of orifice plug that is used for handpiece Water Chilling Units or heat pump unit with centrifugal compressor.
Background technique
Handpiece Water Chilling Units mainly is grouped into by motor part and compressor section with centrifugal compressor; Power through motor drives compressor drum and rotates acting, and the seal of high pressure sealing gland motor side and compressor side when reaching the centrifugal compressor operation is set between compressor and motor.In order to reach desirable sealing effect, the high pressure sealing gland is a labyrinth seal, and adopts pressurized gas to disturb gas as isolating.Because these pressurized gas are from centrifugal compressor exhaust volute casing; Its pressure ratio is higher; For the refrigeration or the heating efficiency of assurance unit are higher, under the situation of the favorable sealing property that satisfies the high pressure sealing gland, the steam that is used for the high pressure sealing gland is fewer favourable more to unit refrigeration or heating effect.
Centrifugal refrigerating machines and heat pump unit that industries such as existing refrigeration air-conditioner, chemical industry, medicine are generally used are used centrifugal compressor; Its power end and compressor end adopt the mode of high pressure sealing gland to realize the sealing of lubricant oil and refrigeration agent usually; The required pressurized gas of high pressure sealing gland are delivered to the sealing gland position and are realized sealing then through being built in the sealing gland hole in the casing after the HCS throttling step-down with exhaust outlet of compressor, therefore in being built in the sealing gland hole of interior; Be difficult to realize the effect of throttling; Make the gas pressure of high pressure sealing gland too high, and too much pressurized gas are used for air seal set, cause unit refrigeration or heating performance to reduce.
The model utility content
The purpose of the utility model is to provide a kind of handpiece Water Chilling Units or heat pump unit with the orifice plug to the step-down of high pressure sealing gland gas throttling on the centrifugal compressor.
The purpose of the utility model is to realize through such technological scheme: a kind of orifice plug that is used for centrifugal compressor, and it is characterized in that: it comprises body; The suction port of the body one end formation gas-entered passageway that extends internally; The exhaust passage that constitutes that extends internally, air outlet on the body is communicated with said gas-entered passageway.
In order to reduce the sealing gland gas flow as far as possible, satisfy the optimal pressure value, said outlet passageway is vertical each other with said gas-entered passageway.
For guaranteeing the sealing of the utility model and compressor high pressure air tube sealing road, the end that said body is provided with suction port is provided with round platform, this round platform and the sealing of high pressure air tube sealing road Spielpassung.
For guaranteeing the fastening of the utility model and compressor case and sealing, the other end of said body has tapped hole, and its outside is a screw thread; Said external screw-thread is best with the taper thread, and it more can realize the integrity sealing effectively.
The refrigerator steam of the HTHP of drawing from centrifugal compressor exhaust volute casing; In the process orifice plug; Because the high gas gas peak pipeline of orifice plug is little; Therefore the refrigerant vapor of high pressure can receive drag effect when flowing through orifice plug, thereby has reduced the refrigerant gas pressure that flows through behind the orifice plug.Under the same terms, the inside gas-entered passageway diameter and the length of orifice plug directly determine its pressure loss, thus the gas pressure after the decision throttling.
Owing to adopted technique scheme, the utlity model has following advantage:
1, the utility model can be realized the circulation and the throttling buck functionality of sealing gland gas, thereby improves the refrigeration or the heating performance effect of unit;
2, the exhaust passage is vertical each other with gas-entered passageway, reduces the sealing gland gas flow as much as possible, has played the effect of adjustment optimum gas seal pressure;
3, the overall tightness in orifice plug and centrifugal compressor casing inner high voltage sealing gland hole has been satisfied in taper thread fit sealing and round platform Spielpassung sealing.
Description of drawings
The description of drawings of the utility model is following:
Fig. 1 is the utility model embodiment's a outline drawing;
Fig. 2 is the axial section of Fig. 1;
Fig. 3 is the utility model embodiment mounting structure schematic representation.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation; But the utility model is not limited to this mode of execution; Any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.
Embodiment: referring to accompanying drawing 2, a kind of orifice plug that is used for centrifugal compressor, it comprises body; The suction port 1 of body one end extends formation gas-entered passageway 2 in body; Air outlet 3 on the body is extended the exhaust passage 4 that constitutes and is communicated with said gas-entered passageway 2 in body.
In the present embodiment, said outlet passageway 4 is vertical each other with said gas-entered passageway 2.
Further referring to Fig. 2, the end that said body is provided with suction port 1 has individual round platform 7; The other end has tapped hole 5, and the outside is a taper thread 6.
Claims (7)
1. orifice plug that is used for centrifugal compressor, it is characterized in that: it comprises body; The suction port (1) of body one end extends internally and constitutes gas-entered passageway (2); The exhaust passage (4) that constitutes that extends internally, air outlet on the body (3) is communicated with said gas-entered passageway (2).
2. according to the orifice plug of the described centrifugal compressor of claim 1, it is characterized in that: said outlet passageway (4) is vertical each other with said gas-entered passageway (2).
3. according to the orifice plug of claim 1 or 2 described centrifugal compressors, it is characterized in that: the other end of body has tapped hole (5), and the outside is screw thread (6).
4. according to the orifice plug of the described centrifugal compressor of claim 3, it is characterized in that: external screw-thread (6) is a taper thread.
5. according to the orifice plug of claim 1 or 2 described centrifugal compressors, it is characterized in that: the end that body is provided with suction port (1) also is provided with round platform (7).
6. according to the orifice plug of the described centrifugal compressor of claim 3, it is characterized in that: the end that body is provided with suction port (1) also is provided with round platform (7).
7. according to the orifice plug of the described centrifugal compressor of claim 4, it is characterized in that: the end that body is provided with suction port (1) also is provided with round platform (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482742 CN202348742U (en) | 2011-11-29 | 2011-11-29 | Orifice plug for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482742 CN202348742U (en) | 2011-11-29 | 2011-11-29 | Orifice plug for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348742U true CN202348742U (en) | 2012-07-25 |
Family
ID=46537750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120482742 Expired - Lifetime CN202348742U (en) | 2011-11-29 | 2011-11-29 | Orifice plug for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603846A (en) * | 2013-11-28 | 2014-02-26 | 常德中联重科液压有限公司 | Damping plug, valve and engineering machine |
-
2011
- 2011-11-29 CN CN 201120482742 patent/CN202348742U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603846A (en) * | 2013-11-28 | 2014-02-26 | 常德中联重科液压有限公司 | Damping plug, valve and engineering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |