Coal bed gas stator with self-compensation function

Abstract

This utility model relates to the field of stator technology and discloses a coalbed methane stator with self-compensation function. It includes a rubber ring disposed on the inner wall of a metal ring, a metal mesh layer disposed in the interlayer between the metal ring and the rubber ring, multiple sets of grooves formed on the inner wall of the metal ring, springs disposed within the grooves, and compression blocks connected to the side of the multiple sets of springs away from the metal ring. Limiting plates are connected to both sides of the metal ring, and grooves matching the limiting plates are formed on both sides of the rubber ring. This novel design uses springs to compress the metal mesh layer. During use, the metal mesh layer is responsible for contracting the rubber ring, thus automatically compensating for wear within the rubber ring. The compression of the metal mesh layer by the springs causes the rubber ring to automatically compensate, improving the contact stability between the stator and rotor in the screw pump and increasing the operating efficiency of the screw pump.

Description

Technical Field

[0001] This utility model belongs to the field of stator technology, specifically a coalbed methane stator with self-compensation function. Background Technology

[0002] In coalbed methane extraction, screw pumps are the core equipment for lifting gas-liquid mixtures. The coalbed methane stator, as a key component of the screw pump, forms a dynamic sealing cavity with the metal rotor through helical meshing, directly determining the pump's volumetric efficiency and continuous operation capability. Its structure is usually composed of a metal skeleton and an inner rubber layer. The elastic deformation of the rubber layer is the core of achieving gas-liquid sealing—when the rotor rotates, the rubber layer is tightly attached to the rotor surface, and the underground coalbed methane is transported to the surface through the axial movement of the sealing cavity. However, the special environment of coalbed methane extraction makes the stator rubber layer prone to uneven wear. When the wear of the rubber layer exceeds 0.1 mm, the mating clearance expands, leading to leakage in the sealing cavity. To address this, we propose a coalbed methane stator with self-compensation function. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a coalbed methane stator with self-compensation function, which effectively solves the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coalbed methane stator with self-compensation function, comprising a metal ring with a rubber ring disposed on the inner wall of the metal ring, a metal mesh layer disposed in the interlayer between the metal ring and the rubber ring, multiple sets of grooves being formed on the inner wall of the metal ring, and springs disposed in the grooves of the metal ring.

[0005] Preferably, the side of the multiple sets of springs away from the metal ring is connected to a compression block.

[0006] Preferably, the metal ring is connected to limit plates on both the left and right sides, and the rubber ring is provided with grooves on both the left and right sides that match the limit plates.

[0007] Preferably, guide plates are connected to both the left and right sides of the extrusion block, and the metal ring has a groove that matches the guide plate.

[0008] Preferably, the inner wall of the metal ring is connected to multiple sets of limiting blocks, and the outer side of the rubber ring is provided with a limiting groove that matches the limiting blocks.

[0009] Preferably, the outer side of the metal ring is connected to multiple sets of bolts, and the metal ring has threaded holes that match the bolts.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By setting a spring, the metal mesh layer can be compressed. During use, the metal mesh layer is responsible for the contraction of the rubber ring, so that the rubber ring can automatically compensate for wear when it occurs inside. The spring compresses the metal mesh layer, which makes the rubber ring automatically compensate, improving the contact stability between the stator and rotor in the screw pump and improving the operating efficiency of the screw pump.

[0012] 2. By setting up the extrusion block, the rubber ring can be limited and protected, reducing the wear of impurities through the gap between the left and right sides of the rubber ring and the inner wall of the pump casing, thus improving the efficiency of the device. By setting up the guide plate, the stability of the extrusion block during the extrusion process is improved, thus improving the stability of the device. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the coalbed methane stator structure with self-compensation function of this utility model;

[0016] Figure 2 This is a schematic diagram of the extrusion block structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the spring structure of this utility model.

[0018] In the diagram: 100, metal ring; 101, bolt; 102, limiting block; 110, spring; 120, extrusion block; 121, guide plate; 130, limiting plate; 200, rubber ring; 300, metal mesh layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3A self-compensating stator for coalbed methane includes a metal ring 100 with a rubber ring 200 on its inner wall. A metal mesh layer 300 is provided in the interlayer between the metal ring 100 and the rubber ring 200. Multiple grooves are formed on the inner wall of the metal ring 100, and springs 110 are provided in the grooves of the metal ring 100. During use, the metal mesh layer 300 is responsible for contracting the rubber ring 200, so that the rubber ring 200 automatically compensates for wear when it occurs inside. The springs 110 can compress the metal mesh layer 300, so that the rubber ring 200 automatically compensates, improving the contact stability between the stator and rotor in the screw pump and improving the operating efficiency of the screw pump.

[0021] Multiple sets of springs 110 are fixedly connected to a compression block 120 on the side away from the metal ring 100. By setting the compression block 120, the compression blocks 120 on both sides of the metal ring 100 are more efficient in compensating the metal mesh layer 300, thus improving the stability of the device. Limiting plates 130 are fixedly connected to both sides of the metal ring 100. By setting the compression block 120, the rubber ring 200 can be limited, thus limiting and protecting the rubber ring 200 and reducing the wear of impurities from the gap between the left and right sides of the rubber ring 200 and the inner wall of the pump casing, thereby improving the efficiency of the device. Grooves matching the limiting plates 130 are opened on both sides of the rubber ring 200. Guide plates 121 are connected to both sides of the compression block 120. The metal ring 100 is provided with a sliding groove matching the guide plate 121. By setting the guide plate 121, the stability of the compression block 120 during the compression process is improved, thus improving the stability of the device.

[0022] The inner wall of the metal ring 100 is connected to multiple sets of limiting blocks 102. The outer side of the rubber ring 200 is provided with limiting grooves that match the limiting blocks 102. By setting the limiting blocks 102, the possibility of the rubber ring 200 rotating on its own is prevented, thereby improving the efficiency of subsequent compensation and the stability of the contact between the device and the rotor. The outer side of the metal ring 100 is connected to multiple sets of bolts 101. The metal ring 100 is provided with screw holes that match the bolts 101. By setting the bolts 101, the extrusion block 120 can be limited, thereby improving the efficiency of the automatic compensation of the rubber ring 200 in this device.

Claims

1. A coalbed methane stator with self-compensation function, characterized in that: The inner wall of the metal ring (100) is provided with a rubber ring (200), a metal mesh layer (300) is provided in the interlayer between the metal ring (100) and the rubber ring (200), and multiple sets of grooves are opened on the inner wall of the metal ring (100), and a spring (110) is provided in the groove of the metal ring (100).

2. A coalbed methane stator with self-compensation function according to claim 1, characterized in that: The multiple sets of springs (110) are connected to a compression block (120) on the side away from the metal ring (100).

3. A coalbed methane stator with self-compensation function according to claim 1, characterized in that: The metal ring (100) is connected to a limiting plate (130) on both the left and right sides, and the rubber ring (200) has grooves on both the left and right sides that match the limiting plate (130).

4. A coalbed methane stator with self-compensation function according to claim 2, characterized in that: The extrusion block (120) is connected to guide plates (121) on both the left and right sides, and the metal ring (100) has a groove that matches the guide plate (121).

5. A coalbed methane stator with self-compensation function according to claim 1, characterized in that: The inner wall of the metal ring (100) is connected to a plurality of limiting blocks (102), and the outer side of the rubber ring (200) is provided with a limiting groove that matches the limiting blocks (102).

6. A coalbed methane stator with self-compensation function according to claim 1, characterized in that: The outer side of the metal ring (100) is connected to multiple sets of bolts (101), and the metal ring (100) has screw holes that match the bolts (101).

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