CN204851641U - Mining closed screw rod compressor - Google Patents
Mining closed screw rod compressor Download PDFInfo
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- CN204851641U CN204851641U CN201520443743.6U CN201520443743U CN204851641U CN 204851641 U CN204851641 U CN 204851641U CN 201520443743 U CN201520443743 U CN 201520443743U CN 204851641 U CN204851641 U CN 204851641U
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Abstract
The utility model discloses a mining closed screw rod compressor, include: prevent the withstand voltage explosion proof machine of fluorine, magnetic coupling ware, screw compressor, prevent being connected through the magnetic coupling ware between the withstand voltage explosion proof machine of fluorine and the screw compressor and realize the transmission, prevent that withstand voltage explosion proof machine of fluorine and screw compressor shell adopt terminal surface static sealing structure to be connected. The utility model discloses motor and compressor adoption magnetic force connected mode to make integrative closed flange seal form with the casing, overcome open -type screw rod compressor leak many, wearing and tearing greatly, centering, the operating environment scheduling problem that expects much not, also overcome the positive die mould antiknock device of semi -enclosed screw rod compressor and can not be applied to 0 problem of distinguishing the getting face in the explosion district, improve the motor heat dissipation system simultaneously, under equal refrigeration condition, furthest has improved refrigeration efficiency, the utility model discloses safe, high -efficient, convenient operation, service requirement hang down.
Description
Technical field
The utility model relates to a kind of compressor, provides industry down-hole, a kind of colliery refrigeration system safety, efficiently enclosed screw rod refrigeration compressor especially.
Background technique
Along with society is to the increase day by day of coal demand, the producing capacity of people improves constantly, and mining depth also constantly increases, and after entering deep mining, underground heat increases, and heat evil problem more seriously restricts Safety of Coal Mine Production.Therefore, solve underground thermal pollution problem, research refrigeration of underground mine cool-down method has become an important topic in China's coal-mine safety in production.At present, refrigeration of underground mine cooling system technology reaches its maturity, its system mainly comprises refrigeration compressor set, condenser, vaporizer, returns the parts such as cooler, wherein refrigeration compressor is used for the conversion of refrigeration agent phase, the most important thing in refrigeration cool-down link, its working efficiency direct influential system integrally cooling efficiency.Domestic refrigeration of underground mine cooling system refrigeration compressor mostly is open piston compressor, opening type helical-lobe compressor and semi-enclosed helical-lobe compressor, there is no the real enclosed screw rod refrigeration compressor that adopts as the precedent of refrigeration agent converting apparatus.
Open piston compressor air displacement scope is wide, and low to material requirements, easy processing, the thermal efficiency is high, strong adaptability.But it adopts brace and connecting rod framework, piston reciprocates, also exists inertial force, and thus machine rotational speed is subject to a definite limitation; Radiating efficiency is low, need join oil cooler and multi way temperature sensor; Motor is connected by coupling with compressor, and compressor output shaft is sealed by shaft seal, easily leaks after shaft seal wearing and tearing.There is larger clearance volume, volumetric efficiency is not high.Piston and cylinder, piston pin, connecting rod and crankshaft, crankshaft and bearing etc. all have friction, have suction, go out valve block, easy to wear.Compression can cause valve block damaged, and piston ring scuffing, serious causes crankshaft, connecting rod cracking.The shortcomings such as when air displacement is large, piston diameter is large, and machine volume and weight is all comparatively large, more owing to there is quick-wear part, and maintenance load is large, and during running vibration is larger, thus within the scope of large air displacement gradually replace by screw compressor.
Screw type refrigerating compressor is divided into opening type, semi-enclosed and closed.Opening type Spiral Lobe Refrigeration Compressor also needs to join oil cooler and exhaust gas temperature sensor, its refrigeration host computer Partial shrinkage machine adopts coupling to be connected with motor, motor and compressor are independent separately, housing is not connected, compressor output shaft is sealed by shaft seal, easily leak after shaft seal wearing and tearing, the potential safety hazard of existence is more, cannot run well under worse Minepit environment.Relative to piston compressor, screw compressor completes compressor work by negative and positive rotor rotary compression, and volume is little; Without clearance volume, volumetric efficiency is relatively high; Except bearing, without friction position, almost without wearing and tearing; Without valve block unit, vibration is few.
Semi-enclosed Spiral Lobe Refrigeration Compressor, does not need oil cooler, and single-machine capacity is comparatively large, and efficiency is higher, can meet operated within range wider.But because built-in motor is non-anti-explosion motor, complete machine must make positive voltage type anti-explosion structure, is placed in explosion-proof tank by whole refrigeration compressor.Now, due to the design of explosion-proof tank encapsulation, cause case inner fluid flow field to be closed, motor radiating efficiency is low, and motor is not suitable for employing and carries air cooling system, cools so must consume refrigeration system cold, reduces refrigerating efficiency.Motor is connected by flange plate static seal with compressor, and motor and compressor adopt a main shaft, and be positioned at same chamber, sealability is better.
In refrigeration of underground mine cooling device, Piston Refrigerant Compreessor is eliminated gradually, refrigeration compressor in current underground moving refrigeration cooling device mostly is opening type Spiral Lobe Refrigeration Compressor and semi-enclosed Spiral Lobe Refrigeration Compressor, and these two kinds of form Spiral Lobe Refrigeration Compressors exist a lot of problem.
One, opening type Spiral Lobe Refrigeration Compressor need configure the complicated oil system parts such as independent oil cooler, oil pump and exhaust gas temperature sensor, motor is connected by traditional coupling with compressor, housing does not communicate, compressor output shaft seals the leakage way of refrigeration agent and oil by shaft seal, easily leak after shaft seal wearing and tearing, need often to add refrigerant and refrigerator oil; Equipment compression completes compressor work by negative and positive rotor rotary compression, and efficiency is lower; Cause different swell increment because motor shaft is different from compressor shaft temperature and cause Shaft misalignment, destroy the problem of shaft seal; Motor adopts Air flow, and cooling fan pneumatic noise is large, and efficiency is low, and easily stained, fluctuation of service.
Its two, semi-enclosed Spiral Lobe Refrigeration Compressor comparatively opening type Spiral Lobe Refrigeration Compressor has advanced part, does not need the complicated oil-way system that oil cooler etc. is formed; Low relative to the withstand voltage degree of opening type helical-lobe compressor, semi-hermetic refrigerating compressor unit can bear certain pressure, design pressure≤3.6Mpa; Condensing pressure≤2.1MPa; Operational limit is higher, can work under more severe condition; Leaks aspect, motor is connected by flange plate static seal with compressor, and motor and compressor share a main shaft, and quite in a chamber, without shaft seal, leakage problem solves.But it is defectiveness still, motor and compressor share the same axis, must ensure the coaxality problem of whole axle, very high to the requirement on machining accuracy of axle; Because it must make positive voltage type anti-explosion structure, cause interior flow field to be closed, built-in motor cannot adopt and carry air cooling system, and the cold air in refrigeration system can only be relied on to lower the temperature, the refrigerating capacity of consumption own, reduces whole system refrigerating efficiency; According to GB3836.5-2004 regulation, positive voltage type anti-explosion is not useable for the getting working face belonging to explosive region, 0th district, so getting working face does not generally adopt this mode.
Model utility content
The purpose of this utility model is to provide a kind of mining enclosed screw rod refrigeration compressor, can effectively solve the problem.
A main shaft is shared for motor and compressor, or the transmission that motor and compressor two main shafts adopt coupling to be connected and cause coaxality to ensure and to cause has the problem of vibration, the utility model adopts magnetic force Placement to connect motor and compressor, starts the precedent that motor is connected with compressor magnetic force.Adopt magnetic force to connect good damping effect, work system operates steadily, long service life, has overload protection function, without rigid joint between driving shaft and bearing axle, installs coaxality and allows to there is certain coverage error, and friction transmission, equipment operates steadily.
For leakage problem, the utility model housing adopts the closed design of one, and end face of flange adopts the sealing of O RunddichtringO, without shaft seal, and No leakage.
Be not useable for the problem of getting working face for semi-hermetic refrigerating compressor unit positive-pressure explosion-proof structure, built-in motor is improved, make it more meet safety of coal mines requirement, can be applicable to getting working face; Improve motor cooling heat radiation system simultaneously, increase coefficient of heat transfer, improve refrigeration system operational efficiency, ensure motor more stable operation.
The technical solution of the utility model is: a kind of mining enclosed screw rod refrigeration compressor, comprising: anti-fluorine explosion-proof motor 1, magnetic coupling 2, screw compressor 3; Described anti-fluorine explosion-proof motor 1 realizes transmission with being connected by magnetic coupling 2 between screw compressor 3, and described anti-fluorine explosion-proof motor 1 adopts end face static seal structure 4 to be connected with screw compressor 3 shell, i.e. integral type enclosed construction.Adopt anti-fluorine explosion-proof motor 1, avoid positive voltage type anti-explosion structure, more meet mine anti-explosion safety requirement, can be applicable to getting working face.
Preferably, described anti-fluorine explosion-proof motor 1 comprises drive motor 11 and radiation system 12.
Preferably, described magnetic coupling 2 comprises copper rotor 21, magnetic steel rotor 22, copper rotor mounting disc 23, magnetic steel rotor mounting disc 24, described copper rotor mounting disc 23 is fixed on the main shaft 11a of drive motor 11, and described magnetic steel rotor mounting disc 24 is fixed on the main shaft 30a of screw compressor 3;
Described copper rotor mounting disc 23 comprises copper rotor mounting disc I 23a be fixed on the main shaft 11a of drive motor 11, copper rotor mounting disc II 23b be sleeved on the main shaft 30a of screw compressor 3, is bolted connection the connecting body 23c of copper rotor mounting disc I 23a and copper rotor mounting disc II 23b;
Described magnetic steel rotor mounting disc 24 comprises magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b, described magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b is positioned at the cavity that copper rotor mounting disc I 23a, copper rotor mounting disc II 23b and connecting body 23c three are formed, and the main shaft 30a that described magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b is sleeved on screw compressor 3 carries out axially locating with the main shaft 30a of screw compressor 3;
Described copper rotor 21 is arranged on inside copper rotor mounting disc I 23a and copper rotor mounting disc II 23b respectively, and described magnetic steel rotor 22 is arranged on magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b respectively.
Copper rotor 21 and magnetic steel rotor 22 are free to independent rotation.When copper rotor 21 is by drive motor 11 driven rotary, copper rotor 21 and magnetic steel rotor 22 produce relative movement, alternating magnetic field produces eddy current by air gap on copper rotor 21, eddy current generation induction field and permanent magnetic field interact simultaneously, thus drive magnetic steel rotor 22 to rotate along the direction identical with copper rotor 21, result is at output shaft---and the main shaft 30a of screw compressor 3 produces torque, thus drives the main shaft 30a of screw compressor 3 to rotate.
Preferably, described radiation system 12 comprises the radiating motor 12b of fan 12a and drive fan 12a.Anti-fluorine explosion-proof motor 1 carries radiation system 12, namely radiating motor 12b and fan 12a is carried, radiating motor 12b drives fan 12a to carry out radiating and cooling to drive motor 11, owing to not adopting positive-pressure explosion-proof structure, air-cooled flow field is not closed, radiating effect obviously promotes, simultaneously not consumption systems cold, improves complete machine refrigerating efficiency.
Preferably, described end face static seal structure 4 is flange sealing structure, the O RunddichtringO 43 comprising motor side flange 41, compressor end flange 42 and be located in compressor end flange 42 groove, described motor side flange 41 is connected by bolt and nut with compressor end flange 42.Adopt end face static seal structure 4, ensure sealing, stop leakage problem.
The advantage that the utility model has compared with existing coupling interconnection technique:
1, friction, No leakage.Magnetic coupling adopts the floating diaxon that is in transmission connection of magnetic, well solves coaxality and is difficult to ensure and the problem causing vibration, and magnetic floats transmission simultaneously does not need sealing, does not need lubrication, so solve leakage problem yet.
2, wearing and tearing are few, stable equipment operation.Magnetic coupling connection set relies on magnetic drives; realize the transmission of unlimited contact-type moment; do not exist and transmit contact surface abrasion situation; eliminate flexible coupling requirement intermittent oiling; wear point is many; No-mistake Principle is protected, and the rubber in rubber flexible coupling device is thermo-labile, be subject to the problem such as chemistry and ultraviolet corrosion.
3, have overload protection function, maintenance performance, working efficiency is high.When driven member load there is stall, stuck, load strengthens instantaneously etc. exceed its maximum delivered power situation time, slippage is produced between motor and compressor, avoid equipment to be hit and the danger that damages, thus improve the reliability of whole system, extend system working life.
The utility model has following useful effect:
The utility model motor and compressor adopt magnetic force Placement, and housing is made of one closing type flange seal form, overcome opening type Spiral Lobe Refrigeration Compressor and leak the problems such as many, wearing and tearing are large, misalign, running environment requirement is high, also overcome the problem that semi-enclosed Spiral Lobe Refrigeration Compressor positive voltage type anti-explosion equipment not can be applicable to blast area 0 district getting working face; Improve motor cooling system simultaneously, under equal cryogenic conditions, improve refrigerating efficiency to greatest extent, the utility model safely, efficient, easy-to-operat, service condition are low.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of magnetic coupling in the utility model;
Fig. 4 is the structural representation of radiation system in the utility model
In figure: 1, anti-fluorine explosion-proof motor; 2, magnetic coupling; 3, screw compressor; 4, end face static seal structure; 11, drive motor; 12, radiation system; 21, copper rotor; 22, magnetic steel rotor; 23, copper rotor mounting disc; 24, magnetic steel rotor mounting disc; 41, motor side flange; 42, compressor end flange; 43, O RunddichtringO; The main shaft of 11a, drive motor; 12a, fan; 12b, radiating motor; 23a, copper rotor mounting disc I; 23b, copper rotor mounting disc II; 23c, connecting body; 24a, magnetic steel rotor mounting disc I; 24b, magnetic steel rotor mounting disc II; The main shaft of 30a, screw compressor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As Figure 1-4, a kind of mining enclosed screw rod refrigeration compressor, comprising: anti-fluorine explosion-proof motor 1, magnetic coupling 2, screw compressor 3; Anti-fluorine explosion-proof motor 1 realizes transmission with being connected by magnetic coupling 2 between screw compressor 3, and anti-fluorine explosion-proof motor 1 adopts end face static seal structure 4 to be connected with screw compressor 3 shell, i.e. integral type enclosed construction.Adopt anti-fluorine explosion-proof motor 1, avoid positive voltage type anti-explosion structure, more meet mine anti-explosion safety requirement, can be applicable to getting working face.
End face static seal structure 4 is flange sealing structure, and the O RunddichtringO 43 comprising motor side flange 41, compressor end flange 42 and be located in compressor end flange 42 groove, motor side flange 41 is connected by bolt and nut with compressor end flange 42.O RunddichtringO 43 is fixed between two panels flange, forms end face of flange static seal, prevent the agent of screw compressor 3 internal refrigeration storage from leaking, stop outside mine gas simultaneously, as gas etc., enter compressor.End face seal ensures compressor tightness, makes screw compressor 3 more stable operation.
Anti-fluorine explosion-proof motor 1 comprises drive motor 11 and radiation system 12.Radiation system 12 comprises the radiating motor 12b of fan 12a and drive fan 12a.Anti-fluorine explosion-proof motor 1 carries radiation system 12, namely radiating motor 12b and fan 12a is carried, radiating motor 12b drives fan 12a to rotate, disturbance anti-fluorine explosion-proof motor 1 inner air flows, increase inner member coefficient of heat transfer, improve internal heat dissipating efficiency, ensure heat dissipation potential, prevent from causing because radiating efficiency is low anti-fluorine explosion-proof motor 1 normally to work.Anti-fluorine explosion-proof motor 1 carries radiation system 12, can not consume refrigeration system cold, improves complete machine refrigerating efficiency.
Magnetic coupling 2 comprises copper rotor 21, magnetic steel rotor 22, copper rotor mounting disc 23, magnetic steel rotor mounting disc 24, copper rotor mounting disc 23 is fixed on the main shaft 11a of drive motor 11, and magnetic steel rotor mounting disc 24 is fixed on the main shaft 30a of screw compressor 3; Magnetic steel rotor mounting disc 24 aluminium dishes, magnetic steel rotor 22 adopts NdFeB material;
Copper rotor mounting disc 23 comprises copper rotor mounting disc I 23a be fixed on the main shaft 11a of drive motor 11, copper rotor mounting disc II 23b be sleeved on the main shaft 30a of screw compressor 3, is bolted connection the connecting body 23c of copper rotor mounting disc I 23a and copper rotor mounting disc II 23b;
Magnetic steel rotor mounting disc 24 comprises magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b, magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b is positioned at the cavity that copper rotor mounting disc I 23a, copper rotor mounting disc II 23b and connecting body 23c three are formed, and the main shaft 30a that magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b is sleeved on screw compressor 3 carries out axially locating with the main shaft 30a of screw compressor 3;
Copper rotor 21 is arranged on inside copper rotor mounting disc I 23a and copper rotor mounting disc II 23b respectively, and described magnetic steel rotor 22 is arranged on magnetic steel rotor mounting disc I 24a and magnetic steel rotor mounting disc II 24b respectively.
When copper rotor 21 rotates with drive motor 11, copper rotor 21 and magnetic steel rotor 22 produce relative movement, and slippage is formed between the rotating speed and the rotating speed of magnetic steel rotor 22 of copper rotor 21, changed according to certain rule by the magnetic flux of copper rotor 21, according to Faraday law of electromagnetic induction, alternating magnetic field produces eddy current on copper rotor 21, the interphase interaction in the induction field that eddy current produces and magnetic steel rotor 22 magnetic field, the magnetic force produced due to slippage corner displacement drives magnetic steel rotor mounting disc 24 along with copper rotor mounting disc 23 rotating Vortex, the main shaft 30a of the main shaft 11a transmission of torque of drive motor 11 to screw compressor 3 is held, thus drive screw compressor 3 to do work, transform refrigeration agent phase.Magnetic coupling 2 achieves anti-fluorine explosion-proof motor 1 and is connected with magnetic drives between screw compressor 3, connects stride forward major step relative to coupling.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (5)
1. a mining enclosed screw rod refrigeration compressor, is characterized in that, comprising: anti-fluorine explosion-proof motor (1), magnetic coupling (2), screw compressor (3); Described anti-fluorine explosion-proof motor (1) is connected with between screw compressor (3) is realized transmission by magnetic coupling (2), and described anti-fluorine explosion-proof motor (1) adopts end face static seal structure (4) to be connected with screw compressor (3) shell.
2., according to the mining enclosed screw rod refrigeration compressor of one according to claim 1, described anti-fluorine explosion-proof motor (1) comprises drive motor (11) and radiation system (12).
3. according to the mining enclosed screw rod refrigeration compressor of one according to claim 2, described magnetic coupling (2) comprises copper rotor (21), magnetic steel rotor (22), copper rotor mounting disc (23), magnetic steel rotor mounting disc (24), described copper rotor mounting disc (23) is fixed on the main shaft (11a) of drive motor (11), and described magnetic steel rotor mounting disc (24) is fixed on the main shaft (30a) of screw compressor (3);
Described copper rotor mounting disc (23) comprise be fixed on drive motor (11) main shaft (11a) on copper rotor mounting disc I (23a), the copper rotor mounting disc II (23b) be sleeved on the main shaft (30a) of screw compressor (3), be bolted connection the connecting body (23c) of copper rotor mounting disc I (23a) and copper rotor mounting disc II (23b);
Described magnetic steel rotor mounting disc (24) comprises magnetic steel rotor mounting disc I (24a) and magnetic steel rotor mounting disc II (24b), described magnetic steel rotor mounting disc I (24a) and magnetic steel rotor mounting disc II (24b) are positioned at copper rotor mounting disc I (23a), in the cavity that copper rotor mounting disc II (23b) and connecting body (23c) three are formed, the main shaft (30a) that described magnetic steel rotor mounting disc I (24a) and magnetic steel rotor mounting disc II (24b) are sleeved on screw compressor (3) is gone up and carries out axially locating with the main shaft (30a) of screw compressor (3),
Described copper rotor (21) is arranged on copper rotor mounting disc I (23a) and copper rotor mounting disc II (23b) inner side respectively, and described magnetic steel rotor (22) is arranged in magnetic steel rotor mounting disc I (24a) and magnetic steel rotor mounting disc II (24b) respectively.
4., according to the mining enclosed screw rod refrigeration compressor of one according to claim 2, described radiation system (12) comprises the radiating motor (12b) of fan (12a) and drive fan (12a).
5. according to the mining enclosed screw rod refrigeration compressor of one according to claim 1, it is characterized in that, described end face static seal structure (4) is flange sealing structure, the O RunddichtringO (43) comprising motor side flange (41), compressor end flange (42) and be located in compressor end flange (42) groove, described motor side flange (41) is connected by bolt and nut with compressor end flange (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443743.6U CN204851641U (en) | 2015-06-24 | 2015-06-24 | Mining closed screw rod compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443743.6U CN204851641U (en) | 2015-06-24 | 2015-06-24 | Mining closed screw rod compressor |
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| Publication Number | Publication Date |
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| CN204851641U true CN204851641U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520443743.6U Active CN204851641U (en) | 2015-06-24 | 2015-06-24 | Mining closed screw rod compressor |
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| CN (1) | CN204851641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929936A (en) * | 2015-06-24 | 2015-09-23 | 煤科集团沈阳研究院有限公司 | Mining closed-type screw refrigerating compressor |
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2015
- 2015-06-24 CN CN201520443743.6U patent/CN204851641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929936A (en) * | 2015-06-24 | 2015-09-23 | 煤科集团沈阳研究院有限公司 | Mining closed-type screw refrigerating compressor |
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