Generator intake and exhaust control structure and generator

Abstract

The application provides a generator intake and exhaust control structure and a generator. The generator intake and exhaust control structure comprises a cylinder, a first induction coil, a second induction coil, an air intake valve, an exhaust valve, a first relay, a second relay and a piston assembly. The first induction coil is arranged at the top of the cylinder, and the second induction coil is arranged at the bottom of the cylinder. The air intake valve and the exhaust valve are both arranged at the top of the cylinder and above the first induction coil. The input end of the first relay is connected with the first induction coil, and the control end of the first relay is connected with the exhaust valve. The input end of the second relay is connected with the second induction coil, and the control end of the second relay is connected with the air intake valve. The piston assembly comprises a piston body and a first magnet. The first magnet is embedded in the piston body, the piston body is arranged in the cylinder, the piston assembly can move up and down along the inner wall surface of the cylinder, and the first induction coil and the second induction coil generate an induced current.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of generator, in particular to a generator intake and exhaust control structure and a generator. BACKGROUND

[0002] The free piston type Brayton cycle generator realizes near Brayton cycle through the orderly flow of working medium among the expansion chamber, compression chamber, heater and cooler, wherein the piston acts on the expansion chamber and compression chamber respectively, which is the only moving part of the generator, to realize heat-work conversion, and realizes heat-work-electricity conversion through the coupled linear motor.

[0003] To realize stable operation of the external combustion free piston Brayton cycle generator, firstly, the orderly flow of working medium among the components of the system is ensured, the timing control of the opening and closing of the intake and exhaust valves of the expansion chamber and compression chamber is strictly modulated, and the occurrence of adverse working conditions such as "knocking" is avoided; secondly, the system needs to work in high temperature and high pressure environment for a long time, and the corresponding components need to meet the requirements of long time and high intensity stable operation under this condition.

[0004] The prior art mainly controls the timing opening of the intake and exhaust valves through camshaft and displacement sensor. Firstly, the camshaft controls the opening and closing of the mechanical valve through transmission components and formal chain to realize the orderly flow of working medium, but the cam profile design is difficult, the mechanical structure of the transmission components is complex, the valve sealing is difficult, the friction between components is inevitable, and the mechanical performance is reduced. Secondly, the pre-displacement sensor and controller are used to realize the collection of the piston displacement signal and the timing control of the opening and closing of the electromagnetic valve, to realize the orderly flow of working medium, but the piston displacement sensor and controller need to be arranged, the electronic devices are many, the structure is relatively complex, and it is difficult to ensure long time, high precision and stable operation. SUMMARY

[0005] The present application provides a generator intake and exhaust control structure and a generator to solve the problem of poor working medium orderly flow and poor stability of the intake and exhaust system in the prior art.

[0006] The application provides a kind of generator admission and exhaust control structure, comprising: cylinder, first induction coil and second induction coil, the first induction coil is located at the top of the cylinder, the second induction coil is located at the bottom of the cylinder;Intake valve and exhaust valve, the intake valve and the exhaust valve are located at the top of the cylinder, and above the first induction coil, the intake valve is used to communicate with cooler, the exhaust valve is used to communicate with heater;First relay and second relay, the input end of the first relay is connected with the first induction coil, and the control end of the first relay is connected with the exhaust valve;The input end of the second relay is connected with the second induction coil, and the control end of the second relay is connected with the intake valve;Piston assembly, the piston assembly includes piston body and first magnet, the first magnet is embedded in the piston body, the piston body is arranged in the cylinder, and the piston assembly can move up and down along the inner wall surface of the cylinder, and induction current is generated in the first induction coil and the second induction coil.

[0007] According to the generator admission and exhaust control structure provided by the application, the N pole of the first magnet is arranged on one side of the piston body close to the top of the cylinder, and the S pole of the first magnet is arranged on one side of the piston body close to the bottom of the cylinder.

[0008] According to the generator admission and exhaust control structure provided by the application, the generator admission and exhaust control structure further comprises a first diode, the first diode is arranged between the first induction coil and the first relay, and the first diode is used for unidirectional conduction when the direction of induction current is clockwise.

[0009] According to the generator admission and exhaust control structure provided by the application, the generator admission and exhaust control structure further comprises a second diode, the second diode is arranged between the second induction coil and the second relay, and the second diode is used for unidirectional conduction when the direction of induction current is counterclockwise.

[0010] According to the generator admission and exhaust control structure provided by the application, the first induction coil is arranged on the outer wall surface or the inner wall surface of the cylinder;The second induction coil is arranged on the outer wall surface or the inner wall surface of the cylinder.

[0011] According to the generator admission and exhaust control structure provided by the application, the generator admission and exhaust control structure further comprises a second magnet, the second magnet is arranged on the outer wall surface of the top of the cylinder, and the magnetic pole of the second magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the top of the cylinder.

[0012] The generator intake and exhaust control structure further comprises a third magnet, which is arranged on the outer wall surface of the bottom of the cylinder, and the magnetic pole of the third magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the bottom of the cylinder.

[0013] The generator intake and exhaust control structure further comprises a third magnet, which is arranged on the outer wall surface of the bottom of the cylinder, and the magnetic pole of the third magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the bottom of the cylinder.

[0014] The generator intake and exhaust control structure further comprises a third magnet, which is arranged on the outer wall surface of the bottom of the cylinder, and the magnetic pole of the third magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the bottom of the cylinder.

[0015] The generator intake and exhaust control structure further comprises a third magnet, which is arranged on the outer wall surface of the bottom of the cylinder, and the magnetic pole of the third magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the bottom of the cylinder.

[0016] The generator intake and exhaust control structure further comprises a third magnet, which is arranged on the outer wall surface of the bottom of the cylinder, and the magnetic pole of the third magnet close to the first magnet is the same as the magnetic pole of the first magnet close to the bottom of the cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is one of the schematic diagrams of the generator intake and exhaust control structure provided by the present application;

[0019] Figure 2 is the second schematic diagram of the generator intake and exhaust control structure provided by the present application;

[0020] Reference signs:

[0021] 1: cylinder; 2: first induction coil; 3: second induction coil; 4: intake valve; 5: exhaust valve; 6: first relay; 7: second relay; 8: piston body; 9: first magnet; 10: piston connecting rod; 11: second magnet. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] The technical solutions of the present application are described below with reference to the drawings. Figures 1 to 2 The present application provides a generator intake and exhaust control structure and a generator.

[0024] At present, the free piston type Brayton generator mainly controls the opening and closing of the valve through mechanical transmission components and sensors to realize the correct exhaust of the expansion chamber and the compression chamber of the generator in the stable working process, but the structure is relatively complex, the wear between components is serious, and the device is difficult to work stably for a long time.

[0025] Based on this, the present application provides a new coil moving magnet type generator intake and exhaust control structure and a generator to replace the control mode of the traditional camshaft and sensors, realize the self-control of the intake and exhaust valves of the expansion chamber and the compression chamber of the heat engine, and improve the service life and reliability of the external combustion type free piston generator.

[0026] The present application provides a generator intake and exhaust control structure, which comprises: a cylinder 1, a first induction coil 2 and a second induction coil 3, the first induction coil 2 is arranged at the top of the cylinder 1, and the second induction coil 3 is arranged at the bottom of the cylinder 1; an intake valve 4 and an exhaust valve 5, the intake valve 4 and the exhaust valve 5 are both arranged at the top of the cylinder 1 and above the first induction coil 2, the intake valve 4 is used for being communicated with a cooler, and the exhaust valve 5 is used for being communicated with a heater; a first relay 6 and a second relay 7, the input end of the first relay 6 is connected with the first induction coil 2, and the control end of the first relay 6 is connected with the exhaust valve 5; the input end of the second relay 7 is connected with the second induction coil 3, and the control end of the second relay 7 is connected with the intake valve 4; a piston assembly, the piston assembly comprises a piston body 8 and a first magnet 9, the first magnet 9 is embedded in the piston body 8, the piston body 8 is arranged in the cylinder 1, the piston assembly can move up and down along the inner wall surface of the cylinder 1, and the first induction coil 2 and the second induction coil 3 generate induced current.

[0027] Reference Figure 1, the first induction coil 2 is arranged at the top of the cylinder 1 and winds along the wall surface of the cylinder 1, the second induction coil 3 is arranged at the bottom of the cylinder 1 and winds along the wall surface of the cylinder 1, the first magnet 9 is embedded in the inside of the piston body 8 and generates a magnetic field; the piston body 8 and the cylinder 1 adopt a gap seal or a piston seal, the piston body 8 and the first magnet 9 can move up and down along the inner wall surface of the cylinder 1; the intake valve 4 and the exhaust valve 5 are arranged at the top of the cylinder 1 and are located above the first induction coil 2, wherein the intake valve 4 is connected with a cooler and the exhaust valve 5 is connected with a heater; the first relay 6 is arranged between the first induction coil 2 and the exhaust valve 5, and the first relay 6 can control the opening and closing of the exhaust valve 5 according to the induced current generated by the first magnet 9 in the piston body 8 and the first induction coil 2; the second relay 7 is arranged between the second induction coil 3 and the intake valve 4, and the second relay 7 can control the opening and closing of the intake valve 4 according to the induced current generated by the first magnet 9 in the piston body 8 and the second induction coil 3.

[0028] During the movement of the piston assembly along the inner wall surface of the cylinder 1, there are six stages, specifically, in the first stage, the piston assembly stably moves from top to bottom at the top of the cylinder 1, the first magnet 9 embedded in the piston body 8 generates an induced current through the first induction coil 2, and the second relay 7 controls the exhaust valve 5 to be closed; in the second stage, the piston assembly continues to move downward along the inner wall surface of the cylinder 1 and is located between the first induction coil 2 and the second induction coil 3, no induction coil exists at this position and no induced current is generated, and the intake valve 4 and the exhaust valve 5 are both closed; in the third stage, the piston assembly continues to move downward along the inner wall surface of the cylinder 1, the first magnet 9 in the piston body 8 generates an induced current through the second induction coil 3, and the second relay 7 connected with the second induction coil 3 controls the intake valve 4 to be opened to suck in the low-temperature and low-pressure working medium.

[0029] The piston assembly continues to move downward and reaches the bottom dead center, the piston assembly changes the moving direction, and the fourth stage is opened, the piston assembly moves upward from the bottom dead center of the cylinder 1, the first magnet 9 in the piston body 8 generates an induced current through the second induction coil 3, and the second relay 7 controls the intake valve 4 to be closed; the piston assembly continues to move upward and enters the fifth stage, at this time, the piston assembly is located between the first induction coil 2 and the second induction coil 3, no induction coil exists at this position and no induced current is generated, and the intake valve 4 and the exhaust valve 5 are both closed; the piston assembly continues to move upward and enters the sixth stage, the first magnet 9 in the piston body 8 generates an induced current through the first induction coil 2, and the first relay 6 connected with the first induction coil 2 controls the exhaust valve 5 to be opened to discharge the high-temperature and high-pressure working medium, and a compression cycle is realized.

[0030] The generator intake and exhaust control structure provided by the application comprises a first induction coil and a second induction coil arranged at the top and bottom of a cylinder respectively, a first magnet arranged in the inside of a piston body, and an induction current generated by the first induction coil and the second induction coil during the up-and-down movement of the piston body along the inner wall surface of the cylinder; a first relay is arranged between the first induction coil and an exhaust valve for controlling the opening and closing of the exhaust valve, and a second relay is arranged between the second induction coil and an intake valve for controlling the opening and closing of the intake valve; the self-control of the intake valve and the exhaust valve is realized by using the reciprocating movement of the piston assembly without changing the original mechanical structure, the device is less, the device wear is reduced, and the stability is high.

[0031] During the operation of the external combustion free piston Brayton generator, the movement state of the piston assembly, the piston assembly moves from the first limit position to the intermediate position, the intake valve of the expansion chamber is opened, the high-temperature and high-pressure gas in the heater is inhaled, and the gas in the compression chamber is compressed; the piston assembly continues to move from the intermediate position to the second limit position, the gas in the expansion chamber is adiabatic expansion, the piston assembly is driven to work and moves to the second limit position, and the exhaust valve of the compression chamber is opened, and the high-pressure and low-temperature gas is discharged to the heater; the piston assembly returns from the second limit position to the first limit position through the intermediate position, the high-temperature and low-pressure gas in the expansion chamber is discharged to the cooler, the low-temperature and low-pressure gas in the compression chamber is inhaled from the cooler, and the next cycle is started. The application is suitable for the timing control of the intake and exhaust valves of the expansion chamber and the compression chamber.

[0032] On the basis of the above embodiment, the N pole of the first magnet 9 is arranged on the side of the piston body 8 close to the top of the cylinder 1, and the S pole of the first magnet 9 is arranged on the side of the piston close to the bottom of the cylinder 1.

[0033] Reference Figure 1 , the N pole of the first magnet 9 is arranged on the side of the piston body 8 close to the top of the cylinder 1, and the S pole of the first magnet 9 is arranged on the side of the piston body 8 close to the bottom of the cylinder 1.

[0034] During the actual movement of the piston assembly, the piston assembly moves downward from the top of the cylinder 1, enters the first stage, the induction current generated by the first induction coil 2 through the first magnet 9 is counterclockwise, the first relay 6 controls the closing of the exhaust valve 5, enters the third stage, the direction of the induction current generated by the second induction coil 3 through the first magnet 9 is counterclockwise, and the second relay 7 controls the opening of the intake valve 4; the piston assembly moves upward from the bottom of the cylinder 1, enters the fourth stage, the direction of the induction current generated by the second induction coil 3 through the first magnet 9 is clockwise, and the second relay 7 controls the closing of the intake valve 4 at this time; continue to move upward, enter the sixth stage, the direction of the induction current generated by the first induction coil 2 through the first magnet 9 is clockwise at this time, and the first relay 6 controls the opening of the exhaust valve 5.

[0035] The setting position of the N pole and the S pole of the first magnet 9 is not limited in the embodiment, and in another embodiment, the N pole of the first magnet 9 is arranged at the side of the piston body 8 close to the bottom of the cylinder 1, and the S pole of the first magnet 9 is arranged at the side of the piston body 8 close to the top of the cylinder 1, and the first relay 6 and the second relay 7 can be controlled to correspondingly control the intake valve 4 and the exhaust valve 5 according to actual conditions.

[0036] Further, on the basis of the above embodiment, the generator intake and exhaust control structure further comprises a first diode, the first diode is arranged between the first induction coil 2 and the first relay 6, and the first diode is used for unidirectional conduction when the direction of the induced current is clockwise.

[0037] In the embodiment, the first diode is arranged between the first induction coil 2 and the first relay 6, and the first diode is used for unidirectional conduction of the circuit, and specifically, in the first stage, the piston assembly moves from top to bottom, the direction of the induced current generated by the first magnet 9 through the first induction coil 2 is counterclockwise, at this time, the first diode disconnects the circuit between the first induction coil 2 and the first relay 6, the first relay 6 does not work, that is, the exhaust valve 5 is controlled to be closed. In the sixth stage, the piston assembly moves from bottom to top, the direction of the induced current generated by the first magnet 9 through the first induction coil 2 is clockwise, at this time, the first diode connects the circuit between the first induction coil 2 and the first relay 6, the first relay 6 controls the exhaust valve 5 to be opened, and the high-pressure working medium is discharged.

[0038] Further, on the basis of the above embodiment, the generator intake and exhaust control structure further comprises a second diode, the second diode is arranged between the second induction coil 3 and the second relay 7, and the second diode is used for unidirectional conduction when the direction of the induced current is counterclockwise.

[0039] In the embodiment, the second diode is arranged between the second induction coil 3 and the second relay 7, and the second diode is used for unidirectional conduction of the circuit, and specifically, in the third stage, the piston assembly moves from top to bottom, the direction of the induced current generated by the first magnet 9 through the second induction coil 3 is counterclockwise, at this time, the second diode connects the circuit between the second induction coil 3 and the second relay 7, the second relay 7 controls the intake valve 4 to be opened, and the low-temperature and low-pressure working medium is sucked in. In the fourth stage, the piston assembly moves from bottom to top, the direction of the induced current generated by the first magnet 9 through the second induction coil 3 is clockwise, the second diode disconnects the circuit between the second induction coil 3 and the second relay 7, and the second relay 7 controls the intake valve 4 to be closed.

[0040] Further, on the basis of the above embodiment, the first induction coil 2 is arranged on the outer wall surface or the inner wall surface of the cylinder 1; and the second induction coil 3 is arranged on the outer wall surface or the inner wall surface of the cylinder 1.

[0041] In one embodiment, the first induction coil 2 is wound around the outer wall of the cylinder 1 and is arranged at the top of the cylinder 1, and the second induction coil 3 is wound around the inner wall or the outer wall of the cylinder 1 and is arranged at the bottom of the cylinder 1. In another embodiment, the first induction coil 2 is wound around the inner wall of the cylinder 1 and is arranged at the top of the cylinder 1, and the second induction coil 3 is wound around the outer wall or the inner wall of the cylinder 1 and is arranged at the bottom of the cylinder 1. The embodiments do not make specific limitations on how the first induction coil 2 and the second induction coil 3 are arranged, and the first magnet 9 can generate an induced current through the first induction coil 2 and the second induction coil 3 when the piston assembly moves upward or downward.

[0042] On the basis of the above-mentioned embodiments, further, the generator intake and exhaust control structure further comprises a second magnet 11, the second magnet 11 is arranged on the outer wall of the top of the cylinder 1, and the magnetic pole of the second magnet 11 close to the first magnet 9 is the same as the magnetic pole of the first magnet 9 close to the top of the cylinder 1.

[0043] Reference Figure 2 The outer wall of the top of the cylinder 1 is further provided with a second magnet 11, the N pole of the second magnet 11 is arranged towards the outer wall of the top of the cylinder 1, and is arranged opposite to the N pole of the first magnet 9 in the piston body 8. During the upward movement of the piston assembly, the first magnet 9 and the second magnet 11 gradually approach each other, and the repulsive force gradually increases due to the same opposite magnetic poles.

[0044] The present application can prevent the piston assembly from colliding with the top of the cylinder 1 during the upward movement of the piston assembly, and ensure the stable operation of the piston assembly, by arranging the second magnet 11 on the outer wall of the top of the cylinder 1, and the magnetic pole of the second magnet 11 close to the first magnet 9 is the same as the magnetic pole of the first magnet 9 close to the top of the cylinder 1. Further, the present application can also provide additional restoring force for the piston assembly, and improve the working efficiency.

[0045] On the basis of the above-mentioned embodiments, further, the generator intake and exhaust control structure further comprises a third magnet, the third magnet is arranged on the outer wall of the bottom of the cylinder 1, and the magnetic pole of the third magnet close to the first magnet 9 is the same as the magnetic pole of the first magnet 9 close to the bottom of the cylinder 1.

[0046] The outer wall of the bottom of the cylinder 1 is provided with a third magnet, the S pole of the third magnet is arranged towards the outer wall of the bottom of the cylinder 1, and is arranged opposite to the S pole of the first magnet 9 in the piston body 8. When the piston moves downward, the first magnet 9 and the third magnet gradually approach each other, and the repulsive force gradually increases due to the same opposite magnetic poles.

[0047] The application can prevent the piston assembly from colliding with the bottom of the cylinder 1 when moving from top to bottom, and ensure the stable operation of the piston assembly; further, the application can provide additional restoring force for the piston assembly, and improve the working efficiency.

[0048] The application sets the second magnet 11 with the same magnetic pole on the outer wall surface of the top of the cylinder 1, and sets the third magnet with the same magnetic pole on the outer wall surface of the bottom of the cylinder 1, which ensures the safety of the piston assembly during the up-down movement, and improves the working efficiency.

[0049] The magnetic pole direction of the second magnet 11 and the third magnet in the embodiment is not limited, and is set according to the magnetic pole position of the first magnet 9 in the piston body 8.

[0050] The first relay 6 and the second relay 7 provided by the application are both electromagnetic relays.

[0051] On the basis of the above embodiment, the piston assembly further comprises a piston connecting rod 10, which is connected to the bottom of the piston body 8.

[0052] Reference Figure 1 and Figure 2 The piston assembly comprises a piston body 8, a first magnet 9 and a piston connecting rod 10, the first magnet 9 is embedded in the piston body 8, the piston connecting rod 10 is connected to the bottom of the piston body 8, and the piston body 8 and the first magnet 9 can be controlled to move up and down along the inner wall surface of the cylinder 1 through the piston connecting rod 10.

[0053] The application further provides a generator comprising the generator intake and exhaust control structure in any of the above embodiments, which is suitable for the expansion chamber and the compression chamber.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A generator intake and exhaust control structure, characterized in that, include: A cylinder, a first induction coil, and a second induction coil, wherein the first induction coil is located at the top of the cylinder and the second induction coil is located at the bottom of the cylinder; An intake valve and an exhaust valve are provided, both located at the top of the cylinder and above the first induction coil. The intake valve is used to communicate with the cooler, and the exhaust valve is used to communicate with the heater. A first relay and a second relay, wherein the input terminal of the first relay is connected to the first induction coil and the control terminal of the first relay is connected to the exhaust valve; the input terminal of the second relay is connected to the second induction coil and the control terminal of the second relay is connected to the intake valve. A piston assembly, comprising a piston body and a first magnet, the first magnet being embedded in the piston body, the piston body being disposed within the cylinder, and the piston assembly being capable of moving up and down along the inner wall of the cylinder, thereby generating an induced current in the first induction coil and the second induction coil; A first diode is disposed between the first induction coil and the first relay, and the first diode is used to conduct unidirectionally when the direction of the induced current is clockwise. The second diode is disposed between the second induction coil and the second relay, and is used to conduct unidirectionally when the direction of the induced current is counterclockwise.

2. The generator intake and exhaust control structure according to claim 1, characterized in that, The N pole of the first magnet is located on the side of the piston body near the top of the cylinder, and the S pole of the first magnet is located on the side of the piston body near the bottom of the cylinder.

3. The generator intake and exhaust control structure according to claim 1, characterized in that, The first induction coil is disposed on the outer or inner wall surface of the cylinder; the second induction coil is disposed on the outer or inner wall surface of the cylinder.

4. The generator intake and exhaust control structure according to claim 1, characterized in that, The generator intake and exhaust control structure also includes a second magnet, which is disposed on the top outer wall of the cylinder, and the magnetic pole of the second magnet near the first magnet is the same as the magnetic pole of the first magnet near the top of the cylinder.

5. The generator intake and exhaust control structure according to claim 1, characterized in that, The generator intake and exhaust control structure also includes a third magnet, which is disposed on the bottom outer wall of the cylinder, and the magnetic pole of the third magnet near the first magnet is the same as the magnetic pole of the first magnet near the bottom of the cylinder.

6. The generator intake and exhaust control structure according to claim 1, characterized in that, Both the first relay and the second relay are electromagnetic relays.

7. The generator intake and exhaust control structure according to claim 1, characterized in that, The piston assembly also includes a piston connecting rod, which is connected to the bottom of the piston body.

8. A generator, characterized in that, Includes the generator intake and exhaust control structure as described in any one of claims 1 to 7.

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