A natural gas pressure differential power generation system

Abstract

The utility model provides a natural gas pressure difference power generation system, and the purpose is to solve the technical problem of strong dependence on pressure difference condition of prior art. The power generation system includes: the inside of shell has an annular activity area, the shell outside is equipped with air inlet and exhaust port, the rotor is annular structure, the rotor rotates and is located in the activity area, be equipped with a plurality of recess on the rotor, the recess can communicate with the air inlet or exhaust port, the baffle, one end is located in the inside of air inlet, the baffle can enter the recess, and can completely be placed in the air inlet, the generator, and the input shaft with the rotor coaxial connection. Fill in the recess on the rotor with the air inlet on the shell, drive the rotor to rotate under the action of pressure, in this process, drive the main shaft through the rotor, and drive the input shaft rotation of generator through the main shaft, and then generate electricity through lower pressure difference.

Description

Technical Field

[0001] This utility model relates to the field of energy utilization technology, specifically to a natural gas differential pressure power generation system. Background Technology

[0002] Natural gas differential pressure power generation is a zero-carbon technology that utilizes the pressure energy released during the depressurization process of high-pressure natural gas to generate electricity, realizing the conversion of "pressure energy - mechanical energy - electrical energy". This technology requires no additional fuel, has no carbon emissions, and can efficiently recover waste pressure energy from pipeline networks.

[0003] However, existing technologies are highly dependent on differential pressure conditions and require a stable high-pressure environment to operate efficiently, which limits their practical applications. Utility Model Content

[0004] To address the technical problem that existing technologies are highly dependent on pressure differential conditions, this invention provides a natural gas pressure differential power generation system, which has the advantage of generating electricity under low-pressure conditions.

[0005] The technical solution of this utility model is:

[0006] A natural gas differential pressure power generation system, comprising:

[0007] The housing has an internal annular movable area, and the outer side of the housing is provided with an air inlet and an exhaust outlet;

[0008] The rotor has a ring structure and is rotatably disposed within the active area. The rotor has multiple grooves that can communicate with the air inlet or the exhaust port.

[0009] A baffle, one end of which is located inside the air inlet, is able to enter the groove and be completely placed inside the air inlet;

[0010] A generator, the input shaft of which is coaxially connected to the rotor.

[0011] Optionally, the housing has a plurality of air inlets and a plurality of exhaust outlets, the distance between the air inlets and the exhaust outlets being greater than the length of the groove.

[0012] Optionally, the air inlet is located on the outer peripheral surface of the housing, and the exhaust outlet is located on the end face of the housing;

[0013] The groove is located on the side wall of the rotor.

[0014] Optionally, the number of air inlets is equal to the number of air outlets, and the number of grooves is greater than the number of air inlets.

[0015] Optionally, during the rotation of the rotor, at least one of the grooves communicates with one of the air inlets.

[0016] Optionally,

[0017] The housing has an annular structure, and an annular through groove is provided on the inner side wall of the housing;

[0018] The input shaft of the motor is fixedly connected to the rotor by multiple connecting rods, which pass through the through slot.

[0019] Optionally, a plurality of sealing rings are provided between the rotor and the housing.

[0020] Optionally, the sealing ring is a ring structure of hard metal, and a sealing groove for embedding the sealing ring is provided between the housing and the rotor.

[0021] Optionally, the sealing groove is filled with lubricating oil.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] Natural gas is injected into the groove on the rotor through the air inlet on the casing. Under pressure, the rotor is driven to rotate. In this process, the rotor drives the main shaft, which in turn drives the input shaft of the generator to rotate, thereby generating electricity through a low pressure difference. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the shell. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] Example:

[0030] See Figure 1 and Figure 2 This embodiment discloses a natural gas differential pressure power generation system, including a housing 10, a rotor 20, a main shaft 30, a baffle 40 and a generator 50. The interior of the housing 10 is an annular active area, and an air inlet 11 and an exhaust outlet 12 are also provided on the housing 10.

[0031] The rotor 20 has a ring structure and is rotatably disposed in the active area inside the housing 10, where it can rotate freely.

[0032] The outer peripheral surface of the rotor 20 is provided with a plurality of grooves 21, and the grooves 21 can only connect to the air inlet 11 or the exhaust port 12, and cannot connect to the air inlet 11 and the exhaust port 12 at the same time.

[0033] The baffle 40 is disposed inside the air inlet 11, and one end of the baffle 40 is rotatably disposed on the end of the air inlet 11 located in the active area. The baffle 40 can be completely embedded inside the air inlet 11, and when the groove 21 on the rotor 20 rotates to the position of the air inlet 11, the end of the baffle 40 can also rotate into the groove 21.

[0034] The input shaft of the generator 50 is connected to the main shaft 30, which is coaxially connected to the rotor 20. The rotation of the rotor 20 drives the input shaft of the generator 50 to rotate.

[0035] In this embodiment, initially, the groove 21 on the rotor 20 is positioned at the air inlet 11. Under the pressure of natural gas, the baffle 40 rotates, opening the air inlet 11 and allowing natural gas to be injected into the groove 21. Simultaneously, the presence of the baffle 40 divides the space of the groove 21 into two parts: one part connects to the air inlet 11 and is filled with natural gas, while the other part contains air. The continuous injection of natural gas into the air inlet 11 increases the pressure difference between the two sides of the baffle 40, forcing the side of the baffle 40 containing natural gas to expand, thereby driving the rotor 20 to rotate.

[0036] The rotor 20 drives the main shaft 30 to rotate, and the main shaft 30 drives the input shaft of the generator 50 to rotate, thereby generating electricity through a lower pressure difference.

[0037] In one specific embodiment:

[0038] The housing 10 has multiple air inlets 11 and multiple exhaust outlets 12, and the distance between adjacent air inlets 11 and exhaust outlets 12 is greater than the length of the groove 21.

[0039] All air inlets 11 are located on the outer peripheral surface of the housing 10, and all exhaust ports 12 are located on the end face of the housing 10. The groove 21 is located on the side wall of the rotor 20.

[0040] Natural gas enters the active area from the side of the casing 10 and then exits from the top of the casing 10. Generally, lubricating oil is required in the active area inside the casing 10 to ensure smooth rotation of the rotor 20. Therefore, this design prevents lubricating oil from entering the exhaust port 12.

[0041] Preferably, the air inlet 11 is configured to meet the condition that the flow direction of natural gas entering the active zone is tangential to the active zone. This design allows the natural gas to exert a tangential impact force on the rotor 20 upon entering the groove 21, accelerating the rotation of the rotor 20.

[0042] In another specific embodiment:

[0043] The number of air inlets 11 and exhaust outlets 12 are equal, and the number of grooves 21 is greater than the number of air inlets 11, such as... Figure 2 As shown, there are three air inlets 11 and three air outlets 12, and four grooves 21. During the rotation of the rotor 20, at least one groove 21 is connected to one air inlet 11.

[0044] This technical solution ensures that the continuous flow of natural gas can continuously drive the rotor 20 to rotate.

[0045] In another specific embodiment:

[0046] The housing 10 has an annular structure, and an annular through groove 13 is provided on the inner side wall of the housing 10. The input shaft of the motor is connected to the rotor 20 through the main shaft 30. The main shaft 30 and the rotor 20 are fixedly connected by multiple connecting rods, and the connecting rods pass through the through groove 13.

[0047] In another specific embodiment:

[0048] Two sealing rings are provided between the rotor 20 and the housing 10, and the two sealing rings are respectively provided on the upper and lower sides of the rotor 20.

[0049] By installing a sealing ring, natural gas can be prevented from leaking from the through-slot 13.

[0050] Preferably, the sealing ring is a ring structure of hard metal, and a sealing groove 22 for embedding the sealing ring is provided between the housing 10 and the rotor 20, and the sealing groove 22 is filled with lubricating oil.

[0051] In another specific embodiment:

[0052] Since the baffle 40 enters the groove 21, it will divide the interior of the groove 21 into two spaces. One space will be filled with natural gas and the pressure will increase, causing the rotor 20 to be forced to rotate, thereby compressing the volume of the other space. In order to avoid the pressure in the other space from increasing, a connecting pipe 60 is provided outside the housing 10, and the two ends of the connecting pipe 60 are respectively connected to the other space and the exhaust port 12.

[0053] On the one hand, it can keep the other space in a low-pressure environment, and on the other hand, it can allow a small amount of natural gas leaking through the baffle 40 to enter the exhaust port 12, reducing waste.

[0054] The connection point between the end of the connecting pipe 60 and the housing 10 is located near the air inlet 11, so that during the rotation of the rotor 20, the volume of another space is reduced, but it can always be connected to the connecting pipe 60.

[0055] The basic condition for this embodiment to be achieved is that the groove 21 described above can only be connected to the air inlet 11 or the exhaust outlet 12 once.

[0056] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A natural gas differential pressure power generation system, characterized in that, include: The housing has an internal annular movable area, and the outer side of the housing is provided with an air inlet and an exhaust outlet; The rotor has a ring structure and is rotatably disposed within the active area. The rotor has multiple grooves that can communicate with the air inlet or the exhaust port. A baffle, one end of which is located inside the air inlet, is able to enter the groove and be completely placed inside the air inlet; A generator, the input shaft of which is coaxially connected to the rotor.

2. The natural gas differential pressure power generation system according to claim 1, characterized in that, The housing has multiple air inlets and multiple exhaust outlets, and the distance between the air inlets and the exhaust outlets is greater than the length of the groove.

3. The natural gas differential pressure power generation system according to claim 2, characterized in that: The air inlet is located on the outer peripheral surface of the housing, and the exhaust outlet is located on the end face of the housing; The groove is located on the side wall of the rotor.

4. The natural gas differential pressure power generation system according to claim 3, characterized in that, The number of air inlets is equal to the number of air outlets, and the number of grooves is greater than the number of air inlets.

5. The natural gas differential pressure power generation system according to claim 4, characterized in that, During the rotation of the rotor, at least one of the grooves is connected to one of the air inlets.

6. The natural gas differential pressure power generation system according to claim 1, characterized in that: The housing has an annular structure, and an annular through groove is provided on the inner side wall of the housing; The input shaft of the motor is fixedly connected to the rotor by multiple connecting rods, which pass through the through slot.

7. The natural gas differential pressure power generation system according to claim 1, characterized in that, Multiple sealing rings are provided between the rotor and the housing.

8. The natural gas differential pressure power generation system according to claim 7, characterized in that, The sealing ring is a ring structure of hard metal, and a sealing groove for embedding the sealing ring is provided between the housing and the rotor.

9. The natural gas differential pressure power generation system according to claim 8, characterized in that, The sealing groove is filled with lubricating oil.

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