CN202883335U - The compressor air adjusting system in diesel hydrogenation device - Google Patents
The compressor air adjusting system in diesel hydrogenation device Download PDFInfo
- Publication number
- CN202883335U CN202883335U CN2012202820779U CN201220282077U CN202883335U CN 202883335 U CN202883335 U CN 202883335U CN 2012202820779 U CN2012202820779 U CN 2012202820779U CN 201220282077 U CN201220282077 U CN 201220282077U CN 202883335 U CN202883335 U CN 202883335U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
A compressor air adjusting system in a diesel hydrogenation device comprises a compressor air cylinder, a piston, a hydraulic control system and an electrical control device. Two ends of the compressor air cylinder are connected with an adjustable clearance air cylinder and a hydraulic servo oil cylinder. An adjustable clearance piston is arranged in the adjustable clearance air cylinder. A clearance cavity is arranged at the front end of the adjustable clearance piston. A control cavity is arranged at the back end of the adjustable clearance piston. A hydraulic servo piston is arranged in the hydraulic servo oil cylinder. A constant pressure cavity is arranged at the front end of the hydraulic servo piston. A leakage cavity is arranged at the back end of the hydraulic servo piston. The adjustable clearance piston is connected with the hydraulic servo piston through a piston rod. A position sensor is arranged on the hydraulic servo piston. The hydraulic control system output is provided with three routes which are respectively connected with the clearance cavity, the control cavity and the constant pressure cavity. The compressor air adjusting system in the diesel hydrogenation device has the advantages of being low in investment and maintenance costs, good in energy-saving effect, reliable in system, especially suitable for a stepless regulation which needs reducing an air flow which is less than 40%, and suitable for an energy-saving reform of a reciprocating compressor in petroleum and chemical industries.
Description
Technical field
The utility model relates to compressor amount regulating system in a kind of diesel hydrotreating unit, particularly a kind of being applicable in the petroleum chemical industry as compressor amount regulating system in a kind of diesel hydrotreating unit of reducing energy consumption.
Background technique
In petroleum chemical industry, as the air displacement of the reciprocal compressor in the oil refining apparatus generally be according to the required maximum volume flow of device or in the recent period device may select by the required flow of dilatation, generally have certain affluence amount.Because the demand of the change (inlet pressure, temperature etc.) of entry condition, technological process or consumption gas equipment changes, when air consumption during less than the air displacement of compressor, just needing that compressor is carried out tolerance regulates, so that the air displacement of compressor adapts to the requirement of air consumption, keep the pressure stability in the pipe network.
The traditional tolerance regulating method of reciprocal compressor has pressing-off suction valve adjusting, fixedly clearance adjusting and bypass adjusting.Wherein pressing-off suction valve regulate and fixedly clearance to regulate be to have level to regulate, it is that power consumption is regulated that bypass is regulated.Find in actual applications, press off a side draught air valve when for a long time, liquid accumulates meeting and produces liquid hammer because not discharging with gas in cylinder in the cylinder of pressing-off suction valve one side, so compressor is not suitable for pressing off for a long time side draught air valve operation; Find that by the demarcation to compressor fixedly clearance is regulated wasted work is not reached the minimizing air displacement and reduces the directly proportional variation of energy consumption, it is not obvious to lower consumption; Whole compression works that bypass is regulated not only unnecessary gas all lose, and the gas that refluxes is the high-temperature gas after compressed, also will use water quench.Above-mentioned traditional tolerance regulating method can not realize that compressor displacement is directly proportional with indicated work, and the energy consumption of compressor operating is large.
Generally be provided with fixedly clearance adjusting and pressing-off suction valve controlling mechanism on the reciprocal compressor, both cooperate, and can realize air displacement classification adjusting.The amplitude of accommodation of pressing-off suction valve is larger, generally is to press off a side draught air valve to reduce air displacement 50%, is applicable to coarse adjustment.Fixedly the clearance adjusting is with auxiliary clearance chamber access cylinder working chamber, and clearance volume is increased, and volumetric efficiency reduces, and air displacement reduces, and also is thicker adjusting.
Traditional fixedly clearance is regulated because the useful area of clearance valve is too little, and in the cyclic process of gas reciprocal compression and expansion in cylinder, the flow velocity of the high pressure draught of the valve port of flowing through is very high, and power consumption is very large, causes the air-flow temperature rise to increase, so energy-saving effect is not good.Owing to need artificial the adjustment, major part is not used again.
The model utility content
Its purpose of the utility model just is to provide compressor amount regulating system in a kind of diesel hydrotreating unit, has investment and maintenance cost is low, good energy-conserving effect, the reliable characteristics of system, be particularly suitable for need reducing flow less than 40% step-less adjustment, be applicable to the reducing energy consumption of reciprocating compressor in the petroleum chemical industry.
The technological scheme that realizes above-mentioned purpose and take, comprise compresser cylinder and piston and hydraulic control system and electric control equipment, described compresser cylinder two ends connect adjustable clearance cylinder and hydraulic servo oil cylinder, be provided with adjustable clearance piston in the described adjustable clearance cylinder, adjustable clearance piston nose is provided with the clearance chamber, adjustable clearance piston rear end is provided with control chamber, be provided with the hydraulic servo piston in the described hydraulic servo oil cylinder, the hydraulic servo piston nose is provided with the constant voltage chamber, the hydraulic servo piston rear end is provided with and leaks the chamber, described adjustable clearance piston is connected by piston rod with the hydraulic servo piston, the hydraulic servo piston is provided with position transducer, described hydraulic control system output is provided with three the tunnel, connects respectively the clearance chamber, control chamber and constant voltage chamber.
Compared with prior art the utlity model has following advantage.
1, adjustable clearance is to adopt more common electrichydraulic control and drive actuator, to the transformation of complete machine and maintenance cost far below partial journey pressing-off suction valve regulative mode; Do not have high-speed moving part owing to drive actuator, almost reach non-maintaining.
2, owing to there is not unnecessary tolerance repeatedly to pass in and out suction valve, drag losses is little.
3, the maximum energy consumption equipment of control system---electric gear wheel pump intermittent duty accounts for the termination of pumping time scale working time less than 1/20, and the power consumption of control system is also far below partial journey pressing-off suction valve regulative mode.
Show through result of practical application that 4, this system has stability height, flexible setting for parameters, the investment of output tolerance and maintenance cost is low, good energy-conserving effect, the reliable characteristics of system, needing to be particularly suitable for the minimizing flow less than 40% step-less adjustment.
5, hydrogen-generator compressor air-discharging amount realizes 62%～100% step-less adjustment, saves energy consumption 22% by existing operating mode work, saves power of motor 85KW.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural principle schematic representation of this device.
Fig. 2 is hydraulic control system principle schematic in this device.
Embodiment
This device comprises compresser cylinder 1 and piston 2 and hydraulic control system and electric control equipment, as shown in Figure 1, described compresser cylinder 1 two ends connect adjustable clearance cylinder 3 and hydraulic servo oil cylinder 5, be provided with adjustable clearance piston 4 in the described adjustable clearance cylinder 3, adjustable clearance piston 4 front ends are provided with clearance chamber 11, adjustable clearance piston 4 rear ends are provided with control chamber 12, be provided with hydraulic servo piston 6 in the described hydraulic servo oil cylinder 5, hydraulic servo piston 6 front ends are provided with constant voltage chamber 13, hydraulic servo piston 6 rear ends are provided with leaks chamber 14, described adjustable clearance piston 4 is connected by piston rod 8 with hydraulic servo piston 6, hydraulic servo piston 6 is provided with position transducer 7, described hydraulic control system output is provided with three the tunnel, connects respectively clearance chamber 11, control chamber 12 and constant voltage chamber 13.
Described adjustable clearance cylinder 3 outsides are provided with cooling chamber 15, described cooling chamber 15 access cooling waters.
Described hydraulic control system comprises Oil pump electrical machinery unit 16,17 and relief valve 19, as shown in Figure 2, hydraulic control system output divides three the tunnel, one the tunnel is connected with accumulator through hand-operated direction valve 23, servo proportion 21, solenoid directional control valve 20 and connects clearance chamber 11, two the tunnel are connected control chamber 12 through hand-operated direction valve, servo proportion, solenoid directional control valve and accumulator, three the tunnel are connected constant voltage chamber 13 through hand-operated direction valve, servo proportion and solenoid directional control valve, described leakage chamber 14 connects local panel 25, and described local panel 25 comprises minute flow container 26 and emptying pipe 27.
Described electric control equipment comprises the PLC programmable controller.
Servo proportion 21 in the described hydraulic control system connects electric control equipment, and described electric control equipment is connected with position transducer 7.
It is on the basis that fixedly clearance is regulated that clearance is regulated, and has cancelled the clearance valve between clearance chamber and the cylinder, loads onto the clearance adjusting device (see figure 1).This device comprises compresser cylinder 1 and compressor piston 2, compresser cylinder 1 is provided with compressor breather check valve 9 and compressor outgassing nonreturn valve 10, compresser cylinder 1 two ends are provided with adjustable clearance cylinder 3, be provided with adjustable clearance piston 4 in the adjustable clearance cylinder 3, the outside is provided with cooling chamber 15, described adjustable clearance cylinder 3 outsides are provided with hydraulic servo oil cylinder 5, be provided with hydraulic servo piston 6 in the hydraulic servo oil cylinder, described adjustable clearance piston 4 is connected by piston rod 8 with hydraulic servo piston 6, and piston rod 8 centers are provided with position transducer 7.
This device hydraulic control system (see figure 2) is provided with a cover oil pump 16 motors 17 units, by relief valve 19 and reduction valve 18 system works pressure is set, by accumulator 24 stable system pressure, stored energy.This hydraulic control system is provided with three grades of outputs, controls respectively the constant voltage chamber 13 in clearance chamber 11 in the one-level clearance adjusting device, the control chamber 12 in the secondary clearance adjusting device and the three grades of clearance adjusting devices.The control principle of three grades of outputs is basic identical: hydraulic system pressure oil one tunnel directly accesses the constant voltage chamber 13 of clearance adjusting device, make clearance chamber 11 remain on the maximum clearance position, another road is subjected to solenoid directional control valve 20, Pilot operated check valve 22, servo proportion 21 or hand-operated direction valve 23 controls enter the control chamber 12 of clearance adjusting device, promote the direction action that adjustable clearance piston 4 reduces to clearance chamber 11.
Control system can be according to master variable or by the manual setting parameter, signal through isolator, the on-the-spot actual position signal that co-located sensor 7 records, the two is by programmable controller PLC comparison operation, again through proportional amplifier output pwm power signal driver servo proportion, control promotes the direction action that adjustable clearance piston 4 reduces to clearance chamber 11, thereby realizes the automatic adjusting to compressor redundant gap.Automatically regulating in the situation of locking, but also direct control hand-operated direction valve 23 manual tune compressor redundant gaps.
Give adjustable clearance cylinder 3 outside cooling chambers 15 access cooling waters, can carry out effective cooling to clearance chamber 11.
The leakage chamber 14 that do-part is regulated in clearance is connected with local panel 25, can the gas that leak be detected and safety dumping.
This device Environmental Conditions:
1. ambient temperature :-30 ℃～55 ℃
2. be applicable to the explosion-proof place of II C level, two classes, two district.
Important technological parameters
1, electrical source of power: three-phase 380V 50Hz power 2.2Kw
2, instrument power: single-phase 220V 50Hz UPS peak output 0.2Kw
3, system's rated pressure: 4～8MPa ± 10%(is adjustable)
4, position control accuracy :≤1/1000
5, resolution≤1/1000.
Claims (5)
1. compressor amount regulating system in the diesel hydrotreating unit, comprise compresser cylinder (1) and piston (2) and hydraulic control system and electric control equipment, it is characterized in that, described compresser cylinder (1) two ends connect adjustable clearance cylinder (3) and hydraulic servo oil cylinder (5), be provided with adjustable clearance piston (4) in the described adjustable clearance cylinder (3), adjustable clearance piston (4) front end is provided with clearance chamber (11), adjustable clearance piston (4) rear end is provided with control chamber (12), be provided with hydraulic servo piston (6) in the described hydraulic servo oil cylinder (5), hydraulic servo piston (6) front end is provided with constant voltage chamber (13), hydraulic servo piston (6) rear end is provided with leaks chamber (14), described adjustable clearance piston (4) is connected by piston rod (8) with hydraulic servo piston (6), hydraulic servo piston (6) is provided with position transducer (7), described hydraulic control system output is provided with three the tunnel, connects respectively clearance chamber (11), control chamber (12) and constant voltage chamber (13).
2. compressor amount regulating system in root a tree name a kind of diesel hydrotreating unit claimed in claim 1 is characterized in that, described adjustable clearance cylinder (3) outside is provided with cooling chamber (15), described cooling chamber (15) access cooling water.
3. compressor amount regulating system in root a tree name a kind of diesel hydrotreating unit claimed in claim 1, it is characterized in that, described hydraulic control system comprises Oil pump electrical machinery unit (16), (17) and relief valve (19), hydraulic control system output divides three the tunnel, one the tunnel through hand-operated direction valve (23), servo proportion (21), solenoid directional control valve (20) is connected 24 with accumulator) connection clearance chamber (11), two the tunnel through hand-operated direction valve, servo proportion, solenoid directional control valve is connected control chamber (12) with accumulator, three the tunnel through hand-operated direction valve, servo proportion is connected constant voltage chamber (13) with solenoid directional control valve, described leakage chamber (14) connects local panel (25), and described local panel (25) comprises a minute flow container (26) and emptying pipe (27).
4. compressor amount regulating system in root a tree name a kind of diesel hydrotreating unit claimed in claim 1 is characterized in that described electric control equipment comprises the PLC programmable controller.
5. compressor amount regulating system in root a tree name claim 1 or the 3 described a kind of diesel hydrotreating units, it is characterized in that, servo proportion in the described hydraulic control system (21) connects electric control equipment, and described electric control equipment is connected with position transducer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202820779U CN202883335U (en) | 2012-06-15 | 2012-06-15 | The compressor air adjusting system in diesel hydrogenation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202820779U CN202883335U (en) | 2012-06-15 | 2012-06-15 | The compressor air adjusting system in diesel hydrogenation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883335U true CN202883335U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202820779U Expired - Lifetime CN202883335U (en) | 2012-06-15 | 2012-06-15 | The compressor air adjusting system in diesel hydrogenation device |
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| Country | Link |
|---|---|
| CN (1) | CN202883335U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822629A (en) * | 2014-12-19 | 2016-08-03 | 罗伯特·博世有限公司 | Hydraulic unit and method for operating hydraulic unit |
| CN108223497A (en) * | 2018-03-14 | 2018-06-29 | 顾兴坤 | A kind of energy saving change system of reciprocating compressor using executing agency's cooling heat |
| CN108223498A (en) * | 2018-03-14 | 2018-06-29 | 顾兴坤 | A kind of hydraulic control system using hydraulic oil cooling clearance adjustment actuating mechanism |
-
2012
- 2012-06-15 CN CN2012202820779U patent/CN202883335U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822629A (en) * | 2014-12-19 | 2016-08-03 | 罗伯特·博世有限公司 | Hydraulic unit and method for operating hydraulic unit |
| CN105822629B (en) * | 2014-12-19 | 2021-05-04 | 罗伯特·博世有限公司 | Hydraulic unit and method for operating a hydraulic unit |
| CN108223497A (en) * | 2018-03-14 | 2018-06-29 | 顾兴坤 | A kind of energy saving change system of reciprocating compressor using executing agency's cooling heat |
| CN108223498A (en) * | 2018-03-14 | 2018-06-29 | 顾兴坤 | A kind of hydraulic control system using hydraulic oil cooling clearance adjustment actuating mechanism |
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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: 20130417 |
|
| CX01 | Expiry of patent term |