JPS6224618B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an output control device for a hot gas reciprocating engine.

(Prior art) As a conventional device of this type, for example,
There is one shown in Publication No. 46-23533.

That is, as shown in FIG. 3, this device includes a one-way valve 109 that opens into the working space 101;
A one-way valve 110 that opens into the working space 102, a one-way valve 111 that opens into the working space 103, and a one-way valve 112 that opens into the working space 104 are connected to the first ducts 105, 106, 107, and 108, respectively. There is. Additionally, a one-way valve 117 that prevents the working gas from flowing into the working space 101, and a one-way valve 117 that prevents the working gas from flowing into the working space 102
one-way valve 118 that does not allow working gas to flow into the working space 103; one-way valve 1 that does not allow working gas to flow into the working space 103;
A one-way valve 120 that prevents working gas from flowing into the second duct 113 and the working space 104 is connected to the second duct 113 and the working space 104, respectively.
114, 115 and 116. Thus, the ends of the first ducts 105, 106, 107 and 108 and the second ducts 113, 11
4, 115, and 116 are connected to a first common duct 121 and a second common duct 122, respectively, and these first common duct 121 and second common duct 122 are in a closed position and a fully open position. Shutter 1, which can be adjusted continuously between
They are connected by a connecting duct 123 with 24. By opening and closing this shutter 124 as appropriate, the working gas flows from the working spaces 101, 102, 103 and 104 to the second common duct 122 through the one-way valves 118, 119, 120 and 121, respectively, and this operation Gas is supplied through one-way valves 109, 110, 111 and 112.
Working spaces 101, 102, 103 and 10, respectively.
It is expected that he will return to Japan in 4. Thus, the power output of the hot gas reciprocating engine is reduced.

Further, as shown in FIG. 4, an improved device in which a compressor 154 and a buffer tank 151 are added to this control device is also shown in the above patent publication. In the case of this improved device, it is necessary to include a compressor and a tank, making the device larger and more complex.

(Problems to be Solved by the Invention) By the way, the first common duct 121 and the second common duct 122 in the above-described device are relatively long, and due to their flow resistance, the shutter 1
24, the above-mentioned working medium does not immediately flow out of the working space and return to the working space,
There was a problem in that it was not possible to quickly control the output of the engine by changing the average pressure of the working medium in the working spaces 101, 102, 103, and 104.

Therefore, the technical problem of the present invention is to enable quick output control of a hot gas reciprocating engine.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned technical problems, the technical measures taken in the present invention are as follows: A valve capable of continuously adjusting the flow rate and having a variable flow path area, and a compression space whose volume changes in a predetermined phase are sequentially connected to the expansion space, and working gas is passed back and forth between the expansion space and the compression space. An output control device for a hot gas reciprocating engine is constructed from a plurality of units for controlling the valves, and a regulator that can adjust all of the valves to the same position simultaneously.

(effect) The above technical means works as follows.

That is, in each unit, the working gas passes through a valve before flowing into the compression space, but this valve has a variable flow path area, and the working gas that passes through this valve has a variable flow path area. Since a corresponding pressure loss is generated, the pressure in the working gas compression space can be reduced by the amount of the pressure loss. Therefore, by simply increasing or decreasing the flow path area of all the valves using a common regulator, the pressure in the working gas compression space can be adjusted without increasing or decreasing the working gas as in the conventional case.

In this way, the output control of the hot gas reciprocating engine can be performed immediately, and the conventional problems can be solved.

(Example) An embodiment of the present invention will be described below.

In FIGS. 1 and 2, the cylinder 13a
and an expansion space 1 formed by the piston 11a.
0a is a heater 5a, a heat storage device 6a, a cooler 7a,
Compression space 9 via valve 16a and piping 8a
It communicates with b. Similarly, the expansion space 10b and the compression space 9c include a heater 5b, a heat storage device 6b, and a cooler 7.
b, communicating via the valve 16b and piping 8b;
Forms a unit or working gas space.
Expansion space 10c, compression space 9d, and expansion space 10
The same applies to the two sets of d and compressed space 9a. The expansion space 10a and the compression space 9a are connected to the piston ring 1.
2a, and the rod 14a is sealed with a sealing member 15a regarding the compression space 9a. Other expansion spaces 10b-d and compression space 9
The same applies to a to d. The piston 11
a to d are connected to a crankshaft 16 via rods 14a to d, and the crankshaft 16 is connected to the piston 11.
The piston 11b is advanced in phase by 90 degrees with respect to the piston 11b, and the same phase relationship is given below. The heaters 5a to 5d are provided with heating burners 4a to 4d. The valves 16a to 16d are connected to the pipe 1
7a to 7d communicate with the hydraulic cylinder 51 of one regulator 50. A piston 52 is inserted into the hydraulic cylinder 51.

The valves 16a to 16d will be explained based on FIG. 2. The valve body 40 is composed of a flow path 41, a cylinder 42, a spring 45, and a valve piston 43, and the flow path 41 and the cylinder 43 are sealed with a piston ring 44.

The hydraulic cylinder 51, cylinder 42, and pipe 17 of the regulator 50 are filled with oil.

In the above configuration, the basic operation of the working gas of the hot gas reciprocating engine will be explained first.

The expansion space 10a, heater 5a, heat storage 6a, cooler 7a, valve 16a, piping 8a, and compression space 9b form a unit or working gas space as explained in the above configuration, but for the sake of clarity, the explanation is Therefore, the explanation will be based on this working gas space.

When piston 11a is at top dead center, piston 1
1b is located between top dead center and bottom dead center, and piston 1
The stroke of 1a from top dead center to bottom dead center is piston 1
1b performs a stroke from the intermediate point to the bottom dead center and from the bottom dead center to the intermediate point, and the stroke in which the piston 11a goes from the bottom dead center to the top dead center is the stroke from the intermediate point to the top dead center and from the top dead center to the intermediate point. Perform the process. The stroke of one cycle of the piston 11a and the piston 11b will be divided into four strokes. First, when the piston 11a moves from the top dead center to the intermediate point and the piston 11b moves from the intermediate point to the bottom dead center, the high pressure working gas in the compression space 9b is pushed out by the piston 11b, and the valve 16
a, enters the expansion space 10a through the cooler 7a, the heat storage device 6a, and the heater 5a. In this process, the working gas releases compression heat by the cooling water in the cooler 7a, receives heat in the heat storage device 6a and becomes high in temperature, is heated by the burner 4a in the heater 5a, and becomes further high in temperature and pressure. Work is applied to the piston 11a while maintaining high pressure in the expansion space 10a.

Next, the piston 11a moves from the intermediate point to the bottom dead center,
When the piston 11b moves from the bottom dead center to the intermediate point, the working gas expands in the compression space 9b and the expansion space 10a and becomes low pressure.

Then, when the piston 11a moves from the bottom dead center to the intermediate point and the piston 11b moves from the middle point to the top dead center, the working gas in the expansion space 10a is transferred to the piston 11a.
and enters the compression space 9b through the heater 5a, heat storage device 6a, cooler 7a, and valve 16a. In this process, the working gas is supplied to the heater 5a.
The piston is heated to a high temperature, cooled to a low temperature by the heat storage device 6a, cooled by the cooler 7a, and further reduced to a low temperature and low pressure, which performs work on the piston 11b.

Finally, the piston 11a moves from the intermediate point to the top dead center,
When the piston 11b moves from the top dead center to the intermediate point, the working gas is compressed in the compression space 9b and the expansion space 10a and becomes high pressure.

As shown in the above one cycle, the piston 11
a to d are expansion spaces 10a to d and compression spaces 9a to d
The stroke from top dead center to bottom dead center receives a large force due to the pressure of the working gas, while the stroke from bottom dead center to top dead center receives a small force, and as a whole receives work from the working gas.

The operation of the output control device according to the present invention is as follows. By manipulating a piston 52 inserted into a hydraulic cylinder 51 of a common regulator 50, the flow passages 41 of the valves 16a-d are continuously moved between fully closed and fully open positions. For example, by moving the piston 52 in the direction of arrow A in FIG. 1, the pressure is transmitted to the valves 16a-d via the pipes 17a-d. The transmitted hydraulic pressure causes the valve piston 43 to narrow the flow path 41 against the force of the spring 45. Further, by moving the piston 52 in the A direction, the valve piston 43 completely blocks the flow path 41. Conversely, move the piston 52 to B
By moving in this direction, the valve piston 43 widens the flow path 41 to a position where the hydraulic pressure and the force of the spring 45 are balanced. Further, by moving the piston 52 in the direction B, the valve piston 43 comes to a position where the flow path is fully opened by the force of the spring.

Therefore, when the flow paths 41 of the valves 16a to 16d are continuously changed between fully closed and fully opened by the common regulator 51, the working gas passing through the flow paths 41 of the valves 16a to 16d is 41, the pressure of the working gas in the output compression spaces 9a to 9d can be adjusted without the inflow and outflow of the working gas, and the output of the hot gas reciprocating engine can be quickly controlled. be exposed. Also, if the common regulator 50 is operated to turn the valves 16a to 16d to shut off the flow path 41,
By interrupting the reciprocating movement of the working gas within one unit, the engine can be quickly and completely stopped in an emergency.

〔Effect of the invention〕

As described above, in this invention, the pressure of the working gas in the output compression spaces 9a to 9d is adjusted without the inflow and outflow of the working gas, and the output of the hot gas reciprocating engine can be quickly controlled and You can stop time. Furthermore, since there is no need to provide a pressure tank for the compressor, the device does not become larger or more complex.

[Brief explanation of the drawing]

Fig. 1 is an operating circuit diagram showing an embodiment of the output control device for a hot gas reciprocating engine according to the present invention, Fig. 2 is an enlarged sectional view of the valve in Fig. 1, and Fig. 3 is a diagram of a conventional hot gas reciprocating engine. An explanatory diagram of the output control device and FIG. 4 are explanatory diagrams of an improved version of the device shown in FIG. 5a-d...Heater, 6a-d...Regenerator, 7a-
d...Cooler, 9a-d...Compression space, 10a-d...
Expansion space, 16a-d... valve, 50... regulator.

Claims (1)

[Claims] 1. An expansion space, a heater, a heat storage device, a cooler, a valve that can be continuously adjusted between a fully closed position and a fully open position and has a variable flow path area, and a compressor whose volume changes with a predetermined phase difference between the expansion space and the expansion space. A hot gas reciprocating engine comprising a plurality of units in which spaces are sequentially connected, working gas is passed back and forth between the expansion space and the compression space, and a regulator that can adjust all of the valves simultaneously and to the same position. Output control device.