JP5153596B2 - Pressure increasing method and pressure increasing system - Google Patents

Description

  The present invention relates to a pressure increasing method and a pressure increasing system for increasing the pressure of compressed air discharged from an air compressor, and more particularly to a pressure increasing method and a pressure increasing system for increasing pressure by heating compressed air.

  2. Description of the Related Art Conventionally, production facilities used in factories include one that consumes compressed air, such as one that uses compressed air as a drive source such as an air cylinder or one that uses compressed air for air blowing. Here, the compressed air is generated by an air compressor and accumulated in a predetermined amount in an air tank, and then supplied to a production facility using the compressed air through a pipe.

  Here, when the discharge pressure of the air compressor is reduced by 0.1 MPa, the power consumption can be reduced by about 8%. Moreover, the amount of air used as compressed air can also be reduced by lowering the discharge pressure of the air compressor. Furthermore, the power consumption of the air compressor can be effectively reduced by reducing the load of the air compressor.

  Further, it is assumed that the pressure required for each production facility is different. In this case, a plurality of air compressors having different discharge pressures are installed in a distributed manner, and each air compressor is used at a minimum required discharge pressure. As a result, the compressed air consumed in the factory can be supplied with distributed partial pressure, and the total power consumed by the plurality of air compressors can be optimized. However, since this requires a plurality of compressors, a high initial cost is required.

From these methods, as a method for effectively reducing the power consumption of the air compressor, a method of reducing the discharge pressure of the air compressor to the limit and partially increasing the pressure with a pressure increasing valve has been proposed (for example, (See Patent Document 1).
JP 2008-223841 A

  However, in order to increase the pressure, the pressure increasing valve uses compressed air equal to or more than the discharge amount of the air compressor. For this reason, the energy lost with pressure increase is large, and on the contrary, the energy consumed by the air compressor may increase.

  Further, when the pressure increasing valve is new, only half of the amount is released. However, since the pressure increasing valve has a sliding portion such as a cylinder portion, it is inevitable that the pressure increasing valve is worn. For this reason, over time, when the performance of the pressure increasing valve decreases due to wear of the cylinder portion or the like, the amount to be released further increases, and the compressed air may be wasted.

  Therefore, the present invention has been made in view of the above problems, and suppresses energy lost due to pressure increase, does not wastefully release compressed air, and does not reduce pressure increase performance. The object is to provide a pressure boosting system.

In order to achieve the above object, a pressure increasing method according to the present invention has the following characteristics.
(CL1) A pressure increasing method according to the present invention is a method for increasing the pressure of compressed air discharged from an air compressor, wherein the compressed air discharged from the air compressor is temporarily accumulated. The open / close valve installed in the pipe connecting the secondary tank and the secondary tank is closed, the compressed air accumulated in the primary tank is heated to increase the internal pressure of the primary tank, and then the open / close valve And the internal pressure of the primary tank is propagated to the secondary tank, thereby increasing the internal pressure of the secondary tank and increasing the pressure of the compressed air accumulated in the secondary tank.

  (CL2) In the pressure increasing method described in the above (CL1), (a) the compressed air discharged from the air compressor is accumulated in the primary tank and the secondary tank with the on-off valve opened. A first step, (b) a second step of raising the internal temperature of the primary tank with the on-off valve closed, and (c) when the internal pressure of the primary tank rises to a predetermined pressure, The on-off valve is opened to propagate the internal pressure of the primary tank to the secondary tank, thereby increasing the internal pressure of the secondary tank and increasing the compressed air accumulated in the secondary tank. And (d) when the internal pressure of the primary tank and the internal pressure of the secondary tank become equal, the open / close valve is closed and the compressed air accumulated in the secondary tank is discharged. These steps may be included.

  (CL3) In the pressure increasing method described in (CL2), (a) the internal temperature of the primary tank is lowered while the on-off valve is closed while the compressed air is discharged from the secondary tank. A fifth step; (b) when the internal temperature of the primary tank is lowered to the temperature of the compressed air discharged from the air compressor, the compressed air discharged from the air compressor is sucked into the primary tank; 6 step, (c) a seventh step of raising the internal temperature of the primary tank with the on-off valve closed, and (d) the internal pressure of the secondary tank is discharged from the air compressor. When the compressed air discharge pressure drops, the on-off valve is opened, and the internal pressure of the primary tank is propagated to the secondary tank, thereby increasing the internal pressure of the secondary tank and accumulating in the secondary tank. Compressed air being And (e) when the internal pressure of the primary tank and the internal pressure of the secondary tank become equal, the on-off valve is closed and the compressed air accumulated in the secondary tank is discharged. And a ninth step.

  (CL4) In the pressure increasing method described in (CL3), a heat pipe is disposed inside the primary tank, fins are attached to the heat pipe, and hot water is supplied to the heat pipe. The internal temperature of the primary tank may be increased and the internal temperature of the primary tank may be decreased by supplying cold water to the heat pipe.

In addition, this invention may be implement | achieved not only as a pressure increase method but as a pressure increase system shown below.
(CL5) A pressure increasing system according to the present invention is (a) a system for increasing the pressure of compressed air discharged from an air compressor, and (b) the compressed air discharged from the air compressor is sucked. A primary tank temporarily accumulated; (c) a secondary tank in which compressed air temporarily accumulated in the primary tank is temporarily accumulated and discharged; and (d) the primary tank and the second tank. An open / close valve that is installed in a pipe connecting the secondary tank and adjusts the flow of the compressed air by opening and closing the valve; and (e) is provided inside the primary tank and supplied with hot water. Heating means for heating the inside of the primary tank, and (f) heating the compressed air accumulated in the primary tank with the on-off valve closed to increase the internal pressure of the primary tank. Later, the on-off valve is opened and the primary tank And the heating means so as to increase the internal pressure of the secondary tank and increase the compressed air accumulated in the secondary tank by propagating the internal pressure of the secondary tank to the secondary tank And control means for controlling.

  According to the present invention, with the open / close valve closed, the compressed air accumulated in the primary tank is heated to increase the internal pressure of the primary tank, and then the open / close valve is opened to reduce the internal pressure of the primary tank. Propagate to the next tank. As a result, the internal pressure of the secondary tank can be increased and the compressed air accumulated in the secondary tank can be increased while suppressing the increase in the internal temperature of the secondary tank.

  That is, the compressed air discharged from the air compressor is increased in pressure by the pressure increasing system. For this reason, even if the discharge pressure of the air compressor is lowered, the pressure required for the production equipment can be ensured. As a result, the discharge pressure of the air compressor can be lowered, and the power consumption of the air compressor can be effectively reduced.

  Further, since the pressure increasing system does not have a sliding portion, the pressure increasing performance does not deteriorate due to wear of the sliding portion unlike the pressure increasing valve. For this reason, compressed air is not discharged unnecessarily, and energy lost due to pressure increase can be suppressed.

(Embodiment)
Embodiments according to the present invention will be described below.
<Overview>
The pressure-increasing method realized by the pressure-intensifying system in the present embodiment has the characteristics shown in the following (1) to (4).

  (1) The pressure increasing method is a method for increasing the pressure of compressed air discharged from an air compressor, and includes a primary tank and a secondary tank in which compressed air discharged from the air compressor is temporarily accumulated. With the open / close valve installed in the piping connecting the two closed, the compressed air accumulated in the primary tank is heated to increase the internal pressure of the primary tank, and then the open / close valve is opened to open the internal pressure of the primary tank. Is propagated to the secondary tank, the internal pressure of the secondary tank is increased, and the compressed air accumulated in the secondary tank is increased.

  (2) The pressure increasing method includes: (a) a first step of accumulating compressed air discharged from the air compressor in the primary tank and the secondary tank with the open / close valve opened; and (b) the open / close valve. A second step of increasing the internal temperature of the primary tank in a closed state, and (c) when the internal pressure of the primary tank rises to a predetermined pressure, the on-off valve is opened to reduce the internal pressure of the primary tank to the secondary tank. And a third step of increasing the internal pressure of the secondary tank and increasing the pressure of the compressed air accumulated in the secondary tank, and (d) the internal pressure of the primary tank and the interior of the secondary tank. And a fourth step of closing the on-off valve and discharging the compressed air accumulated in the secondary tank when the pressure becomes equal.

  (3) The pressure increasing method includes (a) a fifth step of lowering the internal temperature of the primary tank with the on-off valve closed while discharging compressed air from the secondary tank, and (b) primary When the internal temperature of the tank drops to the temperature of the compressed air discharged from the air compressor, a sixth step of sucking the compressed air discharged from the air compressor into the primary tank, and (c) a state where the on-off valve is closed In the seventh step of increasing the internal temperature of the primary tank, and (d) when the internal pressure of the secondary tank drops to the discharge pressure of the compressed air discharged from the air compressor, the on-off valve is opened, An eighth step of increasing the internal pressure of the secondary tank by propagating the internal pressure to the secondary tank and increasing the compressed air accumulated in the secondary tank; and (e) the internal pressure of the primary tank. And the internal pressure of the secondary tank become equal, Close the valve closing, and a ninth step of discharging the compressed air accumulated in the secondary tank.

  (4) In the pressure increasing method, a heat pipe is disposed inside the primary tank, fins are attached to the heat pipe, and by supplying hot water to the heat pipe, the internal temperature of the primary tank is increased, By supplying cold water to the heat pipe, the internal temperature of the primary tank is lowered.

In addition, the pressure increase system in this Embodiment is equipped with the characteristic shown in following (5).
(5) The pressure increasing system is a system that (a) increases the pressure of compressed air discharged from the air compressor, and (b) the compressed air discharged from the air compressor is sucked and temporarily accumulated. A primary tank, (c) a secondary tank in which compressed air temporarily accumulated in the primary tank is temporarily accumulated and discharged, and (d) a pipe connecting the primary tank and the secondary tank. An on-off valve that adjusts the flow of the compressed air by opening and closing the valve; and (e) disposed in the primary tank, and heated water is supplied to heat the inside of the primary tank. (F) With the on-off valve closed, the compressed air accumulated in the primary tank is heated to increase the internal pressure of the primary tank, and then the on-off valve is opened to reduce the internal pressure of the primary tank. By propagating to the secondary tank, the internal pressure of the secondary tank It was elevated to such that boosted compressed air accumulated in the secondary tank, and a control means for controlling the heating means and the on-off valve.

Based on the above points, the pressure increasing system in the present embodiment will be described.
<Configuration>
As shown in FIG. 1, the pressure increasing system 100 is a system for increasing the pressure of compressed air discharged from an air compressor (not shown). Here, as an example, the primary tank 101, the secondary tank 102, the suction valve 103, the discharge valve 104, the tank pedestal 105, the heat pipe 106, the fin 107, the electromagnetic valve 108, the heat source 109, A thermometer 110 on the primary tank 101 side, a pressure gauge 111, a thermometer 112 on the secondary tank 102 side, a pressure gauge 113, and a control device 114 are provided. In the figure, white arrows indicate the flow of compressed air through piping or the like, and solid arrows indicate the flow of data / signals.

  Here, the electromagnetic valve 108 corresponds to the on-off valve. What consists of the heat pipe 106, the fin 107, and the heat source 109 corresponds to the said heating means. The control device 114 corresponds to the control means.

  The primary tank 101 sucks compressed air discharged from an air compressor (not shown) into the inside via a suction valve 103. Compressed air sucked inside is temporarily stored. The compressed air temporarily accumulated inside is supplied to the secondary tank 102 via the electromagnetic valve 108.

  The secondary tank 102 temporarily stores the compressed air supplied from the primary tank 101 inside. Compressed air temporarily accumulated inside is discharged to a production facility (not shown) via a discharge valve 104.

  Note that the primary tank 101 and the secondary tank 102 have the same capacity. It is covered with a heat insulating material, or it is made of a material whose internal pressure and temperature are not easily affected by the outside. It is assumed that it has durability against pressure and temperature required in the present embodiment.

  The suction valve 103 is installed at the compressed air suction port of the primary tank 101. In response to a control signal output from the control device 114 to the intake valve 103, the intake valve 103 is opened or closed to adjust the flow of compressed air. For example, when the control signal is an open signal, the suction valve 103 is opened and compressed air is sucked into the primary tank 101. When the control signal is a close signal, the suction valve 103 is closed and compressed air is not sucked into the primary tank 101.

  The discharge valve 104 is installed at the compressed air discharge port of the secondary tank 102. In accordance with a control signal output from the control device 114 to the discharge valve 104, the discharge valve 104 is opened or closed to adjust the flow of compressed air. For example, when the control signal is an open signal, the discharge valve 104 is opened and compressed air is discharged from the secondary tank 102. When the control signal is a close signal, the discharge valve 104 is closed and compressed air is not discharged from the secondary tank 102.

The tank pedestal 105 is attached to the bottom of each of the primary tank 101 and the secondary tank 102. The tank base 105 keeps the posture of each tank in a stable state.
The heat pipe 106 is disposed inside the primary tank 101. Further, either hot water or cold water is supplied from the heat source 109.

  The fins 107 are disposed inside the primary tank 101 and are attached to the heat pipe 106. Heating or cooling inside the primary tank 101 is promoted by the fins 107.

  The solenoid valve 108 is installed in a pipe connecting the primary tank 101 and the secondary tank 102. In accordance with a control signal output from the control device 114 to the electromagnetic valve 108, the electromagnetic valve 108 is opened or closed to adjust the flow of compressed air. For example, when the control signal is an open signal, the electromagnetic valve 108 is opened and compressed air is circulated between the primary tank 101 and the secondary tank. When the control signal is a close signal, the solenoid valve 108 is closed and compressed air is not circulated between the primary tank 101 and the secondary tank.

  The heat source 109 heats or cools the inside of the primary tank 101 via the heat pipe 106 and the fins 107. Cold water and hot water are supplied to the heat pipe 106 in accordance with a control signal output from the control device 114 to the heat source 109. For example, when the control signal is a cold water supply start signal, the supply of cold water is started, and when the control signal is a cold water supply stop signal, the supply of cold water is stopped. If the control signal is a hot water supply start signal, supply of hot water is started. If the control signal is a hot water supply stop signal, supply of hot water is stopped.

The thermometer 110 measures the internal temperature of the primary tank 101 and outputs the measurement result to the control device 114.
The pressure gauge 111 measures the internal pressure of the primary tank 101 and outputs the measurement result to the control device 114.

The thermometer 112 measures the internal temperature of the secondary tank 102 and outputs the measurement result to the control device 114.
The pressure gauge 113 measures the internal pressure of the secondary tank 102 and outputs the measurement result to the control device 114.

  The control device 114 receives each measurement result from the thermometer 110, the pressure gauge 111, the thermometer 112, and the pressure gauge 113. The suction valve 103, the discharge valve 104, the electromagnetic valve 108, and the heat source 109 are controlled according to the received measurement results.

<Pressure increase control process>
Specifically, as illustrated in FIGS. 2A to 2C, the control device 114 executes the following pressure increase control processes (S101) to (S120). When it is detected that the air compressor (not shown) has stopped or a stop command is received from the operator (not shown) (S113: Yes), the pressure increase control process is terminated.

  First, the control device 114 outputs an open signal to the electromagnetic valve 108, outputs a close signal to the discharge valve 104, and outputs an open signal to the suction valve 103 (S101). Accordingly, the suction valve 103 and the electromagnetic valve 108 are opened while the discharge valve 104 is closed, and compressed air is accumulated in the primary tank 101 and the secondary tank 102 via the suction valve 103.

  Next, the control device 114 determines that the measurement result transmitted from the pressure gauge 111 (internal pressure in the primary tank 101) and the measurement result transmitted from the pressure gauge 113 (internal pressure in the secondary tank 102) are converted into an air compressor ( When it becomes the same as the discharge pressure of the compressed air supplied from (not shown) (S102: Yes), a close signal is output to the electromagnetic valve 108, and a close signal is output to the suction valve 103 (S103). Accordingly, the electromagnetic valve 108 and the suction valve 103 are closed, and the inside of the primary tank 101 becomes a sealed space.

  Next, the control device 114 outputs a hot water supply start signal to the heat source 109 (S104). Along with this, supply of hot water from the heat source 109 to the heat pipe 106 is started. Hot water is supplied from the heat source 109 to the heat pipe 106. The air in the primary tank 101 is heated via the heat pipe 106 and the fins 107. As a result, the volume of air in the primary tank 101 expands. At this time, since the inside of the primary tank 101 is a sealed space, the internal pressure of the primary tank 101 increases.

  Next, when the measurement result (the internal pressure of the primary tank 101) output from the pressure gauge 111 reaches a predetermined pressure (S105), the control device 114 outputs an open signal to the electromagnetic valve 108 (S106). Moreover, a hot water supply stop signal is output to the heat source 109 (S107). Along with this, the electromagnetic valve 108 opens. At this time, due to Pascal's principle, the internal pressure of the primary tank 101 and the internal pressure of the secondary tank 102 are instantaneously the same. However, since the heat transfer is slower than the pressure propagation, even if the internal pressure of the secondary tank 102 increases, the internal temperature of the secondary tank 102 hardly increases.

  Next, the control device 114 outputs a hot water supply stop signal to the heat source 109 (S107). Accordingly, the supply of hot water from the heat source 109 to the heat pipe 106 is stopped. Hot water is no longer supplied from the heat source 109 to the heat pipe 106.

  Next, when the measurement result output from the pressure gauge 111 (internal pressure in the primary tank 101) becomes the same as the measurement result output from the pressure gauge 113 (internal pressure in the secondary tank 102), the control device 114 (S108). : Yes), a close signal is output to the electromagnetic valve 108, and an open signal is output to the discharge valve 104 (S109). Accordingly, the electromagnetic valve 108 is closed, the discharge valve 104 is opened, and the compressed air accumulated in the secondary tank 102 is discharged. The compressed air discharged from the secondary tank 102 is supplied to a production facility (not shown). At this time, the discharge pressure of the compressed air supplied from the secondary tank 102 is larger than the discharge pressure of the compressed air supplied from an air compressor (not shown).

  Next, the control device 114 outputs a cold water supply start signal to the heat source 109 (S110). Accordingly, cold water supply from the heat source 109 to the heat pipe 106 is started. While compressed air is being supplied from the secondary tank 102 to production equipment (not shown), cold water is supplied from the heat source 109 to the heat pipe 106. The air in the primary tank 101 is cooled via the heat pipe 106 and the fins 107. As a result, the volume of air in the primary tank 101 is reduced. At this time, since the inside of the primary tank 101 is a sealed space, the internal pressure of the primary tank 101 decreases.

  Next, when the measurement result (the internal temperature of the primary tank 101) output from the thermometer 110 becomes the same as the temperature of the compressed air supplied from the air compressor (not shown), the control device 114 (S111: Yes). ), A cold water supply stop signal is output to the heat source 109 (S112). At this time, unless it is detected in advance that the air compressor (not shown) has stopped or a stop command has been received from the operator (not shown) (S113: No), the suction valve 103 is substantially simultaneously supplied. An open signal is output (S114). Accordingly, the supply of cold water from the heat source 109 to the heat pipe 106 is stopped. At the same time as the supply of cold water is stopped, the suction valve 103 is opened, and compressed air is supplied to the primary tank 101.

  Next, when the measurement result (internal pressure of the primary tank 101) output from the pressure gauge 111 becomes the same as the discharge pressure of the compressed air supplied from an air compressor (not shown), the control device 114 (S115: Yes), a close signal is output to the intake valve 103 (S116). Accordingly, the intake valve 103 is closed.

  Next, the control device 114 outputs a hot water supply start signal to the heat source 109 (S117). Along with this, supply of hot water from the heat source 109 to the heat pipe 106 is started. The internal temperature of the primary tank 101 rises through the heat pipe 6 and the fins 7. During this time, since the compressed air is supplied from the secondary tank 102 to the production facility (not shown), the internal pressure of the secondary tank 102 decreases.

  Next, when the measurement result (internal pressure of the secondary tank 102) output from the pressure gauge 113 becomes the same as the discharge pressure of the compressed air supplied from the air compressor (not shown), the control device 114 (S118). : Yes), a close signal is output to the discharge valve 104, and an open signal is output to the solenoid valve 108 (S119). Accordingly, the discharge valve 104 is closed, the electromagnetic valve 108 is opened, and the internal pressure of the secondary tank 102 is increased.

Next, the control device 114 outputs a hot water supply stop signal to the heat source 109 (S120). Accordingly, the supply of hot water from the heat source 109 to the heat pipe 106 is stopped.
Thereafter, the above processes (S108) to (S120) are repeated.

  The control device 114 may include a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), an HDD (Hard Disk Drive), a network adapter, and the like. Further, a program for controlling the pressure boosting system 100 (hereinafter referred to as a pressure boosting control program) is installed in the HDD or the like, and the pressure boosting control process is realized by executing the pressure boosting control program. It may be.

<Operation>
Next, the operation of the pressure increasing system 100 will be described. Here, each capacity | capacitance of the primary tank 101 and the secondary tank 102 shall be 10L. The discharge pressure of compressed air discharged from an air compressor (not shown) is 0.500 MPa, and the temperature is 20 ° C. It is assumed that the internal temperature of the primary tank 101 is raised to around 100 ° C. when the pressure is increased and lowered to around 20 ° C. when the pressure is reduced.

  (Procedure 1) First, as shown in FIGS. 3A and 3B, the pressure increasing system 100 opens the suction valve 103 and the electromagnetic valve 108 with the discharge valve 104 closed, and starts from an air compressor (not shown). The discharged compressed air is accumulated in the primary tank 101 and the secondary tank 102.

  (Procedure 2) Next, when the internal pressure of the primary tank 101 and the internal pressure of the secondary tank 102 reach 0.500 MPa (time 0), the pressure increasing system 100 closes the electromagnetic valve 108 and the suction valve 103. The inside of the primary tank 101 is made a sealed space.

(Procedure 3) Next, as shown in FIG. 3C, the pressure increasing system 100 supplies 100 ° C. hot water from the heat source 109 to the heat pipe 106 (time 0 to time t ₁ ). When the internal temperature of the primary tank 101 is raised to around 100 ° C. via the heat pipe 106 and the fins 107, the internal pressure of the primary tank 101 rises from 0.500 MPa to 0.636 MPa as shown in FIG. 3A. .

(Procedure 4) Next, the pressure increasing system 100 opens the electromagnetic valve 108 and stops supplying hot water from the heat source 109 to the heat pipe 106 (time t ₁ ).
(Procedure 5) Next, as shown in FIGS. 3A and 3B, when the internal pressure of the primary tank 101 becomes equal to the internal pressure of the secondary tank 102 (time t ₂ ), the pressure boosting system 100 108 is closed, the discharge valve 104 is opened, and compressed air is discharged from the secondary tank 102.

  Here, the internal pressure of the primary tank 101 and the internal pressure of the secondary tank 102 instantaneously become 0.568 MPa. However, as shown in FIGS. 3C and 3D, heat transfer is slower than pressure propagation. Therefore, even if the internal pressure of the secondary tank 102 increases, the internal temperature rises slightly, and the temperature rise is two. Heat is immediately absorbed by the next tank 102.

(Procedure 6) Next, as shown in FIGS. 3A and 3C, the pressure increasing system 100 is configured to supply heat pipes from the heat source 109 while supplying compressed air from the secondary tank 102 to a production facility (not shown). Cold water at 20 ° C. is supplied to 106 (time t ₂ to time t ₃ ). When the internal temperature of the primary tank 101 is lowered to around 20 ° C. via the heat pipe 106 and the fins 107, the supply of cold water from the heat source 109 to the heat pipe 106 is stopped. At the same time as the supply of cold water is stopped, the intake valve 103 is opened, and compressed air is sucked into the primary tank 101.

(Procedure 7) Next, when the internal pressure of the primary tank 101 reaches 0.500 MPa (time t ₄ ), the pressure increasing system 100 closes the suction valve 103. Hot water at 100 ° C. is supplied from the heat source 109 to the heat pipe 106 (time t ₄ to time t ₅ ). When the internal temperature of the primary tank 101 is raised to around 100 ° C. via the heat pipe 106 and the fins 107, the internal pressure of the primary tank 101 rises from 0.500 MPa to 0.636 MPa. During this time, since the compressed air is discharged from the secondary tank 102, the internal pressure of the secondary tank 102 decreases.

(Procedure 8) Next, as shown in FIGS. 3B and 3D, when the internal pressure of the secondary tank 102 reaches 0.500 MPa (time t ₅ ), the pressure increasing system 100 opens the electromagnetic valve 108, The internal pressure of the next tank 102 is increased. The hot water supply from the heat source 109 to the heat pipe 106 is stopped.

Hereinafter, the pressure increasing system 100 increases the pressure of the compressed air by repeating the above (Procedure 5) to (Procedure 8).
<Summary>
As described above, according to the present embodiment, with the electromagnetic valve 108 closed, the compressed air accumulated in the primary tank 101 is heated to increase the internal pressure of the primary tank 101, and then the electromagnetic valve 108 is opened. The internal pressure of the primary tank 101 is propagated to the secondary tank 102. As a result, the internal pressure of the secondary tank 102 can be increased and the compressed air accumulated in the secondary tank 102 can be increased while suppressing an increase in the internal temperature of the secondary tank 102.

  That is, the compressed air discharged from the air compressor (not shown) is increased in pressure by the pressure increasing system 100. For this reason, even if the discharge pressure of an air compressor (not shown) is lowered, the pressure required for production equipment (not shown) can be secured. As a result, the discharge pressure of the air compressor (not shown) can be lowered, and the power consumption of the air compressor can be effectively reduced.

  Further, since the pressure increasing system 100 does not have a sliding portion, the pressure increasing performance does not deteriorate due to wear of the sliding portion unlike the pressure increasing valve. For this reason, compressed air is not discharged unnecessarily, and energy lost due to pressure increase can be suppressed.

  The present invention is used as a pressure increasing method and pressure increasing system for increasing the pressure of compressed air discharged from an air compressor, and particularly as a pressure increasing method and pressure increasing system for increasing pressure by heating compressed air. be able to.

It is a figure which shows the structure of the pressure increase system in embodiment. It is a 1st flowchart which shows the pressure increase method in embodiment. It is a 2nd flowchart which shows the pressure increase method in embodiment. It is a 3rd flowchart which shows the pressure increase method in embodiment. It is a graph which shows the time change of the internal pressure of a primary tank. It is a graph which shows the time change of the internal pressure of a secondary tank. It is a graph which shows the time change of the internal temperature of a primary tank. It is a graph which shows the time change of the internal temperature of a secondary tank.

Explanation of symbols

100 Pressure Boosting System 101 Primary Tank 102 Secondary Tank 103 Suction Valve 104 Discharge Valve 105 Tank Base 106 Heat Pipe 107 Fin 108 Electromagnetic Valve 109 Heat Source 110 Thermometer 111 Pressure Gauge 112 Thermometer 113 Pressure Gauge 114 Controller

Claims (5)

A method of increasing the pressure of compressed air discharged from an air compressor,
The compression accumulated in the primary tank with the on-off valve installed in the pipe connecting the primary tank and the secondary tank temporarily storing the compressed air discharged from the air compressor closed After heating the air and increasing the internal pressure of the primary tank, the internal pressure of the secondary tank is increased by opening the on-off valve and propagating the internal pressure of the primary tank to the secondary tank. A method of increasing pressure, comprising increasing the pressure of compressed air accumulated in the secondary tank. A first step of accumulating compressed air discharged from the air compressor in the primary tank and the secondary tank with the on-off valve opened;
A second step of increasing the internal temperature of the primary tank with the on-off valve closed;
When the internal pressure of the primary tank rises to a predetermined pressure, the on-off valve is opened to propagate the internal pressure of the primary tank to the secondary tank, thereby increasing the internal pressure of the secondary tank, and A third step of increasing the pressure of the compressed air accumulated in the next tank;
A fourth step of closing the on-off valve and discharging the compressed air accumulated in the secondary tank when the internal pressure of the primary tank becomes equal to the internal pressure of the secondary tank. The pressure increasing method according to claim 1. A fifth step of lowering the internal temperature of the primary tank with the on-off valve closed while discharging compressed air from the secondary tank;
A sixth step of sucking the compressed air discharged from the air compressor into the primary tank when the internal temperature of the primary tank drops to the temperature of the compressed air discharged from the air compressor;
A seventh step of increasing the internal temperature of the primary tank with the on-off valve closed;
When the internal pressure of the secondary tank drops to the discharge pressure of the compressed air discharged from the air compressor, the on-off valve is opened and the internal pressure of the primary tank is propagated to the secondary tank. An eighth step of increasing the internal pressure of the secondary tank and increasing the pressure of the compressed air accumulated in the secondary tank;
A ninth step of closing the on-off valve and discharging the compressed air accumulated in the secondary tank when the internal pressure of the primary tank and the internal pressure of the secondary tank are equalized. The pressure increasing method according to claim 2. A heat pipe is disposed inside the primary tank, and fins are attached to the heat pipe. By supplying hot water to the heat pipe, the internal temperature of the primary tank is increased, and the heat pipe is supplied to the heat pipe. The pressure increasing method according to claim 3, wherein the internal temperature of the primary tank is lowered by supplying cold water. A system for increasing the pressure of compressed air discharged from an air compressor,
A primary tank in which compressed air discharged from the air compressor is sucked and temporarily stored;
A secondary tank in which compressed air temporarily accumulated in the primary tank is temporarily accumulated and discharged;
An on-off valve installed in a pipe connecting the primary tank and the secondary tank, and adjusting the flow of the compressed air by opening and closing the valve;
A heating means disposed inside the primary tank and heated to supply the hot water;
With the on-off valve closed, the compressed air accumulated in the primary tank is heated to increase the internal pressure of the primary tank, and then the on-off valve is opened to reduce the internal pressure of the primary tank to the second pressure. Control means for controlling the on-off valve and the heating means so as to increase the internal pressure of the secondary tank and increase the compressed air accumulated in the secondary tank by propagating to the secondary tank And a pressure increasing system characterized by comprising:

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