JPS60147599A - Starting device for turbo compressor device - Google Patents

Abstract

PURPOSE:To permit to effect preliminary operation with the minimum time by a method wherein the process value, operating condition or the like of each system are given to a central operating and processing unit to operate the necessary operating time of an auxiliary machine in each systems and finish the establishment of operation of the auxiliary machine in each system of the compressor. CONSTITUTION:The starting device is for starting automatically the auxiliary machines (air system S1, oil system S2, cooling water system S3 and dehumidifying system S4) of each system in the turbo compressor device 100 and is consisting of the central processing unit 200, provided with the functions of operation, memory and timer, and a process inputting unit 300. The starting device inputs a digital signal DI and an analog signal AI to operate the necessary operating time of each system and outputs a relay signal RO and a pulse signal PO to each auxiliary machines. According to this method, the necessary operating time for the auxiliary machines in each system may be shortened and energy saving effect may be obtained by reducing the electric power consumption of each auxiliary machines.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a starting device for a turbo compressor device for supplying compressed air to painting machines, machine tools, etc. In a turbo compressor system that is composed of many auxiliary machines such as an instrument air system, an oil system, a cooling water system, and a dehumidification system to support this, the turbo compressor system operates each auxiliary machine at an appropriate time. relating to a starting device.

[Technical background of the invention and its problems]

The applicant of the present application previously proposed a turbo compressor device having a configuration as shown in FIG. 1 as a turbo compressor device for supplying compressed air to a load such as a painting machine. In Figure 1, AN is the air system of the main engine for supplying compressed air, and this air system MAN
is the instrument air system S that maintains the pressure inside the main engine above the specified value.
1. Oil system S2 that supplies lubricating oil into the main engine
, a cooling water system S3 that cools the compressed air, and a dehumidification system Su that dehumidifies the compressed air.

Here, the main engine includes a main motor IO, and first-stage, second-stage, and third-stage compression sections connected to the main motor 10 via rotating shaft parts //, /:l, /3. , 15. /
It is equipped with A. And the air system AN of this main engine is
It has an intake silencer 20, through which air from which dust and dirt in the atmosphere has been removed is supplied to the intake valve 2.
is input to the first stage compression section/Q by opening/closing.

This 7-stage compression section/I1. The first compression of air is performed at , and this compressed air is manually supplied to the second stage compression section IS through the seventh intercooler. Here, a second compression takes place, and the compressed air passes through the second intercooler n.
It is input to the stage compression section/l. Here, the third compression is performed, and the compressed air is passed through the aftercooler J, and the air is passed through the air discharge valve J.
When the system is open, the air is muffled through the air silencer lagoon and released into the atmosphere. On the other hand, when the air discharge valve is closed, the air is sent to the header 27 for suppressing pressure fluctuations via the dehumidification system shaft, and from there is supplied to the load side unit.

Further, each of the auxiliary equipment systems S1 to SII is configured as follows. That is, the instrumentation air system s1 includes each stage compression section/IA
This is to maintain the pressure within ~lA above the specified value,
A heavy compressor (auxiliary compressor) 30 and a dryer 3/ are used to send air to each multistage compression section/q to 16.

The oil system S2 includes the rotating shaft portion l of the multi-stage compression section /ri~/6.
/ ~ 13 is for supplying lubricating oil to rotating parts, main oil pump θ and auxiliary oil pump Hiroshi /
, an oil tank 3 having an oil heater 2, and an oil cooler. Since the load is small until the main motor 10 is operated, the auxiliary oil pump Hiroshi/
is driven to suck up oil from the oil tank 3, cool it through an oil cooler bowl, and supply the oil to the rotating shaft parts l/~/3 and other rotating parts.

After operating the main motor io, the main oil pump y is used instead of the auxiliary oil pump Hirol because the load is large.

to drive and supply oil. Also oil heater'/-
2 is automatically operated when the oil temperature in the oil tank Hiroshi 3 falls below the specified value, and the oil tank Hiroshi? Maintain the oil temperature inside the tank above the specified value.

The cooling water system S3 is for cooling compressed air that has reached a high temperature, and includes a cooling tower 50, a cooling water tank S/, and a cooling water pump octopus. The cooling water returned from the cooling water system S5 is cooled by the cooling tower 50 and stored in the cooling water tank 51, and the necessary amount of cooling water is pumped to the first intercooler n1 by the cooling water pump 5'-. Intercooler J1 Aftercooler μ
Water is then sequentially sent to oil cooler Hiro 2 to cool the compressed air and oil.

Furthermore, the dehumidification system Sm dehumidifies the compressed air supplied to the load side J so that it does not condense in the pipe. and sends it to the load side 2g.

In the above configuration, as shown in FIG. 2, the main motor 10 and the multi-stage compression parts 74 to 74/l rotated by the main motor 10 usually start operating at a predetermined time Ta within 7 days.
After that, the operation will be stopped after a predetermined number of days. The main engine shutdown cycle varies depending on the factory operation mode, but
For example - weeks.

Here, in order to operate the main motor 10, the systems 81 to Sm of each auxiliary machine are set in advance at time T. I have been driving since then,
It is necessary to bring each auxiliary machine into a normal operating state, that is, to satisfy the establishment conditions necessary for operation, at least by time T or time Tb, which takes into account the previous certain margin time.

By the way, conventionally, in order to operate each auxiliary machine in a turbo compressor device, a person goes to the site, looks at various conditions, makes decisions, and operates the various auxiliary machines. This operation is performed at a time (TbTo) based on knowledge gained from experience and time (TbTo) obtained from performance data, so that the preparation for operation of the auxiliary equipment is completed before the start of operation of the main motor T,l.

-Tb) The auxiliary equipment was operated with sufficient time allowed between the two. In addition, in operation that relies on human intuition, variations occur in the operation establishment time (Tb - To) of auxiliary equipment,
Since the operation preparation completion time Tb of the auxiliary equipment may sometimes be delayed, the operation start time Tb of the auxiliary equipment. is advanced to the time (TaT
b) If sufficient time is not allowed in between, the main motor 10 may not be able to be operated during the scheduled operating time T, which may have a significant impact on factory operations. In this way, in conventional equipment, the operation establishment time (Tb-T
o) cannot be accurately grasped, the operation start time T of the auxiliary equipment
. must be advanced to provide sufficient time between the times (Ta - Tb), and since the auxiliary equipment is operated based on human intuition, the operation establishment time (Tb - T
o) may also become longer. For this reason, the operation establishment time Tb of the auxiliary equipment is delayed, and the operation time T8 of the traction motor 10 is delayed, which has an adverse effect on factory operations.
This has the disadvantage that it takes a long time and wastes power.

[Purpose of the invention]

The present invention was made in order to eliminate the drawbacks of the prior art as described above, and it is possible to
It is an object of the present invention to provide a starting device for a turbo compressor device that can perform advance operation in the minimum operating time of each system's auxiliary equipment.

[Summary of the invention]

In order to achieve the above object, the present invention includes a main engine of an air system that compresses air in the atmosphere by a compression section rotationally driven by a main electric motor and supplies the compressed air to a load side, a compressor, and a dryer. Auxiliary equipment for the instrumentation air system that maintains the pressure in the compression section above a specified value, an auxiliary equipment for the oil system that has an oil pump and supplies lubricating oil to the rotating parts of the main engine, and a cooling water pump and cooling equipment. A turbo compressor device comprising an auxiliary machine of a cooling water system that has a cooling water system and that cools the compressed air, and an auxiliary machine of a dehumidification system that has a dehumidifier that uses cooling water and dehumidifies the compressed air, The instrumentation air system includes a central processing unit having an arithmetic unit, a storage device, and a control unit, and a five-person output device for transmitting and receiving signals between the central processing unit and the main engine and the auxiliary equipment. The air pressure of the oil system, the oil temperature of the oil system, the cooling water pressure of the cooling water system, and the cold water pressure of the dehumidification system are respectively applied to the central processing unit via the input/output device, and the central processing unit performs each of the corrections. The required operating time of the machine is calculated, and the operation establishment of each of the auxiliary machines is completed by the time when the main machine starts operating according to the operation program for each of the auxiliary machines stored in the central processing unit. shall be.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a schematic diagram of the starting device according to this embodiment. This starting device is a turbo compressor device 10 shown in FIG.
The central processing unit 200 is for automatically starting up the auxiliary equipment of each system in 0, and has a control unit equipped with an arithmetic unit, a storage unit, and a timer function, and this central processing unit -〇〇 and a process input/output device 300 that transmits and receives signals between the turbo compressor device 100 and each auxiliary device in the turbo compressor device 100. The central processing unit 200 then connects the turbo compressor device 10 to the turbo compressor device 10 via the process input/output device 300.
0, input digital signals DI such as equipment operating status and failure, and analog signals AI such as lubricating oil temperature and outside air temperature, calculate the required operating time for each system, and It outputs a relay signal RO for operating commands of an auxiliary oil pump, baby compressor, etc. and a pulse signal Po for temperature setting to auxiliary equipment.

Here, the digital signal D output from the auxiliary equipment of each system
I and the analog signal AI, and the relay signal RO and pulse signal PO input to the auxiliary equipment of each system will be explained with reference to FIG. The analog signal AI is the compression part internal pressure Pv110/ for the instrument air system S1, and the oil temperature PV2 in the oil tank lA3 for the oil system S2.
102, for the cooling water system S3, the cooling water main pipe pressure p
v5103 and the cooling water main pipe temperature PvlI10≠, and for the dehumidification system Su, the cold water temperature in the dehumidifier 10 Py510
! is output as a process value signal from each system. For the instrumented air system S1, the relay signal RO is an operation command signal /// given to the dryer 3/ and an operation command signal //2 given to the baby compressor 3o.
For the oil system s2, the operation command signal 713 is given to the auxiliary oil pump Hiroshi; for the cooling water system s3, the operation command signal //'I is given to the cooling water pump S2; and the operation command signal /no is given to the cooling tower 50. , for the dehumidification system Su, the operation command signal given to the dehumidifier Lθ is //1. is output from the central processing unit SOO to the auxiliary machines of each system via the process input/output device 300. For the instrumentation air system s1, the digital signal DI is an operating status signal /, 2 output from the dryer 3/.
/and operation status signal output from baby compressor 3o/22. For the oil system s2, the operating state signal /co3 is output from the auxiliary oil pump tAl, and for the cooling water system S3, the operating state signal 12≠ is output from the cooling water pump tacho, and the operating state signal / is output from the cooling tower 5°. On the 2nd evening, the operating status signals 7 and 26 of the dehumidifier 6o of the dehumidifier system & are respectively given to the central processing unit 200 via the process exit device M3oθ. In addition, the digital signal DI output from each system when the operation establishment conditions are satisfied is the establishment condition signal /3/ of the compression section internal pressure for the instrumentation air system s1, and the oil temperature signal in the oil main pipe for the oil system s2. Establishment condition signal 1
32. Regarding the cooling water system S3, the establishment condition signal 13.3 of the cooling water main pipe pressure and the establishment condition signal /# of the temperature in the cooling water main pipe.

Regarding the dehumidification system, the establishment condition signal /3.5' of the cold water temperature in the dehumidifier to is connected to the process input/output device 3, respectively.
00 to the central processing unit, 200.

Furthermore, the pulse signal Po is a set temperature signal/storage given to the dehumidifier AO, and this is the central processing unit, 2O
It is output from O via the process input/output device 300.

Next, the operation of this embodiment will be explained with reference to FIGS.

Fig. φ shows the operation mode of the auxiliary equipment of each system 81 to sII, and the instrument air system S1 is at time T. Operation is started at 1 o'clock, and after 1 has elapsed in the required operation time, operation of the auxiliary equipment is established at Tb1, and after a predetermined margin time has elapsed, at T1, the main motor i
o's operation is started. Similarly, the oil system S2 has an operation start time T. 2. The required operation time T2, the operation establishment time Tb2 of the auxiliary equipment, and the operation start time T for the cooling water system S5. 5
, required operation time T3 and auxiliary equipment operation establishment time Tb3,
The dehumidification system SU starts operating at time T. Monkey, driving time'
A schedule called ru and auxiliary equipment operation establishment time Tb1l.
It is driven by In addition, in FIG. 7, T5 + T6 +
'r71 TB is for each system 81~SL+ from reference time O
It represents the time until the start of operation, that is, the operation time.

FIG. 3 and FIG. 1 are flowcharts showing arithmetic operations in the central processing unit 200 of FIG.

First, the required operation time T1 of the instrumentation air system S1 is calculated as follows (step ti-oo). That is, step II requires inputting the compression section internal pressure PVI 10/.
O/), the difference between the compressor internal specified pressure PN1 and the difference Psi (=
PNl -PVl) (step θ2), extract (that is, read) the location corresponding to the pressure difference Psi from the instrument pressure time table A prepared in advance in the storage device in the central processing unit θ0. The required operating time TB of the compressor 3o is determined (step 4103).The instrumented pressure time table A is, for example,
0. θ0/K97cm” increments, 0.00Kp/c
m'' to specified pressure II, jOKg/cm'' are stored. The dryer 3/ requires TD time to establish the conditions, and the baby compressor 3o cannot be operated unless the dryer 3/ is running, so the required time T1 for operating the instrument air system is calculated from T1 = TD + TB. (Step HiroO≠, GuOS).

Next, the required operating time T2 of the oil system S2 is calculated as follows (step 4tio). That is, input the oil temperature Pv2102 in the oil tank I13 (Step III/), and calculate the difference PS2 (=
PN2-Pvg) (step≠72), and extract the location corresponding to the temperature difference PS2 from the oil temperature time table B, which is prepared in advance. As a result, the required time 'rp for auxiliary oil system operation is determined, and the required time T2 for oil system operation is determined.
(-TP) (step storage 3).

The oil temperature time table B is, for example, 0. /"C, increments from -10.0°C to the oil temperature establishment temperature λθ, θ°C are stored.

Next, the required operation time T5 of the cooling water system S5 is calculated as follows (step≠20). That is, input the cooling water main pipe pressure PV5103 (step j) and calculate the difference PS5 (=PH1-PV3) between the main pipe established pressure PN and the main pipe pressure PN (step≠22). The location corresponding to the pressure difference P83 is extracted from the cooling water main pipe pressure time table C prepared in advance. As a result, the required operating time of the cooling water pump T
P2 is detected (step 23). Furthermore, input the cooling water main pipe temperature PVII 10'l- via the connector CN (step≠details), and the difference from the main pipe established temperature PNu PBII.
(= PNII − Pvu ) (step psi
), the location corresponding to the temperature difference PSII is extracted from the cooling water main pipe temperature table D prepared in advance. This determines the required operating time Tc of the cooling tower SO (step!, 26). Required time for cooling water system operation T3
The cooling water pump 5-! The required operating time TP2 and the required operating time Tc of the cooling tower are either longer.

Therefore, if TP2≧'rc, T5 "" TP2
When Tc > TP2 (step 4t21), T5=Tc (step≠λ).

Finally, the required operating time TII of the dehumidification system SII is calculated as follows (step≠30). That is, the temperature of cold water in the dehumidifier 10 is Py510! step ≠ 37), and the difference from the cold water establishment temperature PN5 is P85 (= PN5
- PV5) (Step Hiroshi 32). The location corresponding to the temperature difference PS5 is extracted from the cold water temperature table E prepared in advance. As a result, the required time T for dehumidifying equipment operation was determined, and the required time T for dehumidifying system operation was determined by one company (-Tr).
(Step 733).

Then, from the required operation time T1t Ti T3t T11 for each system S1 to separate, and the main motor operation start time T, the operation time T5 + T6p T7 is calculated as shown in the following formula.
Calculate pTB.

'l'5=T, Tl, T6='l', -T2, T7
:T11-T3, T6:'r,-'rMThis formula is based on the operation establishment end time T of the auxiliary equipment of each system in Fig. 1.
b1. Tb2. Tb3. Since the margin time from Tb extension to the main motor operation start time T, i is approximately several minutes, this margin time is omitted.

For example, the central processing unit 200 checks the operating time T5p T6t T79 T8 every minute, and determines the operating time T. When the condition becomes ipTa2FTO5pTou, the auxiliary machines of each system 81 to milk are operated (Stenovhiro≠O), and the condition monitoring timer in the central processing unit 200 is set up.

Here, the above operation will be further explained for each system.

The instrument air system S1 is operated at time To after the operation time T5 has elapsed.
When the machine starts, the dryer 3/ is first operated by the operation command signal /l/, and then the operation status signal 12/ is used to check whether it is normal or not, and if it is normal, the required operating time of the dryer 3/ is determined. After TD, the baby compressor 30 is operated according to the operation command signal //, and then the operation status signal /
, 22, it is confirmed whether or not it is normal, and if it is normal, a timer Tml for monitoring the baby compressor 7 is set up.

The oil system S2 is operated at time To2 after the operating time T6 has elapsed.
When this happens, the operation command signal for the auxiliary oil pump f///3
After that, it is checked whether the oil pump is normal or not based on the operating status signal lko3, and if it is normal, the auxiliary oil pump monitoring timer Tm2 is set.

The cooling water system S3 is operated at time To3 after the operation time T7 has elapsed.
If the required cooling water pump operation time TP2 is longer than the required cooling tower operation time TC, first the cooling water pump S2 is operated according to the operation command signal l/≠, and then the operation status signal 7.2≠ is used to operate the cooling water pump S2. Check whether it is normal or not, and if it is normal, set the cooling water pump monitoring timer Tm3. Next, when the cooling tower operation time has come, the cooling tower 50 is operated by the operation command signals ii and t, and then it is checked whether it is normal by the operation status signal l and j, and if it is normal, the cooling tower 50 is 7 Set and knob the timer Tml for monitoring the power.

The dehumidification system SL1 reaches time T after the operating time Tg has elapsed. 1
1, the dehumidifier 10 is operated by the operation command signal Ill, and then the operation status signal 7.2 O is used to check whether it is normal or not, and if it is normal, the dehumidifier monitoring timer Tm5 is increased. , temperature setting signal/4t
Output /.

When the auxiliary equipment of each system 81 to S11 is operated normally and the respective monitoring timers Tml to Tm5 are set up, the establishment condition signal /31. /32°/3
3. /34', for example 1 until /3K is manually
Whether or not the established condition ends is monitored at a cycle of 00 mg, and when the established condition ends, each of the above-mentioned timers Tml to Tm5 is activated.
A count-up is performed. Then, when the operation start time T8 of the main electric motor 10 comes, each monitoring timer Tm
The contents of 1 to Tm5 and the operation process state when calculating each required operation time T1 to Tu are saved as data (step pro in FIG. 5). After the above processing is performed, the main electric motor @10 is operated.

Therefore, in this embodiment, the operation start time T of the main motor 10
In time for a, each operation required time T1~'rm is calculated from each analog signal (process value signal) 10/~101, so each operation required time T1~TII can be shortened, and each operation establishment is completed. The margin time between times Tbl to Tb1l and main motor operation start time T8 can be shortened, and therefore, the power consumption of the auxiliary equipment of each system s1 to sII is minimized, which not only results in energy savings. , it is possible to prevent an adverse effect on factory operations due to a delay in the operation of the main electric motor 10. Furthermore, the performance data of the operating process status stored in the central processing unit 200 allows the ability of each auxiliary function to be known, which is therefore very useful in terms of maintenance management and the like.

In addition, in the above embodiment, the case of seven compressors each including a multi-stage compression section /4t~/ and a main motor 10 was explained, but the above practical example also applies to a turbo compressor device containing a plurality of these compressors. Needless to say, the same can be applied.

〔Effect of the invention〕

As explained above, the process values, operating conditions, etc. of each system are provided to the central processing unit via the process input/output device, and the central processing unit calculates the required operation time of the auxiliary equipment of each system, Since the operation establishment of the auxiliary equipment in each system is completed at the same time as the operation start time of the main engine according to the pre-stored operation program, it is possible to shorten the operation time of the auxiliary equipment in each system, and to It is possible to shorten the margin time between the end time of operation establishment of the main engine and the start time of the main engine, thereby reducing the power consumption of each auxiliary machine and achieving an energy saving effect. By terminating the established operation of the machine, it is possible to prevent the negative impact on factory operations due to a delay in the start time of the main machine.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a turbo compressor device, FIG. 1 is an operation diagram for explaining a conventional startup method of a turbo compressor device, and FIG. 3 is a startup diagram of a turbo compressor device according to an embodiment of the present invention. A configuration diagram showing the apparatus, and FIGS. 7 to 7 are explanatory diagrams of the operation of FIG. 3. 10---Main motor, /4. /, 5. /7; compression section, 30-... auxiliary compressor, 3/... dryer, IAO, Q-/ oil pump, so... cooling tower, 5/... cooling water pump, 6θ...
Dehumidifier Kl, 10o...Turbo pressure #1 machine device, 10
10.2.103.10y, 1oz-7' process value signal, ///, //2. //3. //II, //!
. //1...operation command signal, /, 2/, /-1, /2
3. /, 24'. /, 26. /, 2t...operating status signal, /3/
, /J,2, /33°/31I, /3. Operation establishment condition signal, /4t/river temperature constant signal, ,20
0... Central processing unit, 300 process input/output device, AN... Air system, 81 River instrumentation air system,
S2...Oil system, s5...Cooling water system, S
ll...Dehumidification system, Tl + T2 + 'r5
+ Tli...Required operating time of each system's auxiliary equipment. Applicant's agent Kiyoshi Inomata Figure 2

Claims (1)

[Scope of Claims] The air system includes a main engine of an air system which compresses air in the atmosphere and supplies the compressed air to the load side by a compression section rotationally driven by a main electric motor, an auxiliary compressor, and a dryer, and the pressure inside the compression section is auxiliary equipment for the instrumentation air system that maintains the
an auxiliary machine for an oil system that has an oil pump and supplies lubricating oil to the rotating parts of the main engine; an auxiliary machine for a cooling water system that has a cooling water pump and a cooling device that cools the compressed air; A turbo compressor device comprising a dehumidifying device using a dehumidifier and an auxiliary device of a dehumidifying system that dehumidifies the compressed air, the central processing unit having a calculation device, a storage device, and a control device; an input/output device for transmitting and receiving signals between the device and the main machine and the auxiliary machine;
The air pressure of the installed air system, the oil temperature of the oil system, the cooling water pressure of the cooling water system, and the cold water pressure of the dehumidification system are respectively applied to the central processing unit via the input/output device, and the central processing unit The required operation time of each of the auxiliary machines is calculated, and the establishment of operation of each of the auxiliary machines is completed by the time when the main engine starts operating according to the operation program for each of the auxiliary machines stored in the central processing unit. A starting device for a turbo compressor device, characterized in that: