Product Introduction of Spring Support
The spring support is a matching structural component in the hydraulic end valve assembly of the plunger pump. It is mainly used to support and position the valve spring, enabling the spring to be installed at the designed position. Together with the valve body, valve seat and other components, it forms the suction valve or discharge valve assembly.
During the operation of the plunger pump, the valve group needs to constantly open and close in response to the pressure changes inside the pump chamber. The spring support provides a stable installation foundation for the valve spring, enabling the spring to apply force to the valve body along the designed direction, thereby cooperating with the valve body and the valve seat to complete the valve closing and resetting process.
Unlike ordinary gaskets or fasteners, spring supports are functional parts with clear assembly positions within the valve assembly. Its external structure, spring installation position, limit size and fluid passage must match the corresponding valve cavity structure. Therefore, the spring supports of different plunger pump models are usually not directly interchangeable.
The main function of the spring support
1. Support valve spring: It provides installation and force-bearing positions for the spring of the suction valve or discharge valve, ensuring that the spring maintains the correct working posture during the operation of the valve assembly.
2. Positioning spring: It restricts the spring from having a significant lateral offset inside the valve cavity and maintains the relative position among the spring, the valve body and the valve seat.
3. Coordination with valve body reset: After the spring is supported by the support, it provides a reset force to the valve body. When the fluid force decreases, it prompts the valve body to move towards the valve seat and return to the closed state.
4. Maintain the valve cavity flow passage: Some spring support structures are equipped with fluid channels, openings or notches. While providing the installation position for the spring, it is also necessary to avoid hindering the normal flow of the medium.
Working principle
The valve assembly of a plunger pump usually achieves automatic opening and closing by utilizing the pressure changes in the pump chamber. When the force exerted by the medium on the valve body is greater than the force of the spring, the valve body leaves the valve seat and the fluid passes through the valve port. When the fluid force decreases or its direction changes, the spring, supported by the spring support, pushes the valve body back to the valve seat, causing the corresponding flow passage to close again.
Therefore, although the spring support does not directly complete the sealing, it is closely related to the installation stability of the valve spring and the opening and closing movement of the valve body. Incorrect dimensions, installation positions or structures of the supports may affect the working posture of the spring and the normal operation of the valve assembly.
Supporting relationship
Spring supports are usually used in conjunction with valve springs, valve bodies, valve seats and related parts of valve cavities. Depending on the specific structure of the plunger pump, it can be applied to the suction valve group, the discharge valve group or the corresponding Van der assembly. Some structures may also be installed in combination with support sleeves, limit structures or retainers.
Product features
High structural matching requirements: The spring installation part, support surface, outer diameter and limit structure need to be matched with the valve cavity and valve spring dimensions.
The positioning function is clear: It mainly undertakes the spring support and positioning functions, which helps maintain the correct installation state of the valve spring during the reciprocating working process.
Considering fluid passage: The support structure used inside the hydraulic end usually needs to take into account the medium flow space, so some products will be set with corresponding flow channels, Windows or notches.
It belongs to the valve assembly kit: When selecting the type, it is not only necessary to judge based on the outer diameter, but also to check the valve spring, valve body, valve seat and the structure of the pump head valve cavity simultaneously.
Scope of application
Spring supports can be used in the hydraulic end valve groups of reciprocating plunger pumps, high-pressure plunger pumps and related oil drilling and production equipment. They are suitable for the spring installation and positioning of suction valves, discharge valves and corresponding vane assemblies. The specific applicable position should be determined based on the model of the plunger pump and the structure of the valve group.
Key points for selection
Spring supports are accessories that are highly compatible with the valve group structure. When purchasing, it is recommended to focus on providing and confirming the following information:
1. Brand, series and specific model of plunger pump;
2. Should it be installed at the position of the suction valve or the discharge valve?
3. The outer diameter, inner diameter and free height of the matching valve spring;
4. Outer diameter of the support, total height and dimensions of the spring installation part;
5. The positioning or fixing method between the support and the valve cavity;
6. Whether there are flow channel holes, Windows, notches or other limit structures;
7. Original part number, physical sample or technical drawing.
Inspection and maintenance
When overhauled the valve assembly, the fit condition between the spring support and the valve spring should be checked simultaneously. Observe whether there is obvious wear, cracks, erosion, corrosion or abnormal deformation on the support surface, positioning parts and flow channel positions.
If the support deforms or the positioning part wears out, it may cause the spring to be skewed, the installation to be unstable or the valve body to move abnormally. A comprehensive inspection should be carried out in combination with the actual conditions of the valve spring, valve body and valve seat.
When installing, keep the valve cavity and the surface of the support clean, confirm that the spring is correctly installed at the specified position of the support, and at the same time avoid the flow channel, notch or other flow passage positions being wrongly blocked. Before disassembling and assembling the hydraulic end of the high-pressure plunger pump, the shutdown and pressure relief should be completed in accordance with the equipment operation procedures.
Procurement Instructions
Juli Petroleum Drilling and Production Equipment Co., Ltd. provides spring supports and related accessories for the hydraulic end valve groups of plunger pumps. The valve cavities, valve springs and support structures of different pump types may vary. When purchasing, it is recommended to provide the pump model, installation position, specifications of the matching valve group, original part number, physical dimensions or technical drawings for verification of the corresponding products.