Novel valve assembly

Abstract

The utility model discloses a novel valve assembly, which belongs to the technical field of valve assemblies and comprises a valve rod with an armature and a valve sleeve with a through hole, the valve rod with the armature comprises the armature and a radially sealed guide cylinder, an oil drainage flat position is arranged at the bottom of the armature, a sealing conical surface is arranged at the bottom of the oil drainage flat position, and the valve sleeve with the through hole comprises a sealing seat surface, a guide sealing hole and a shell. The electromagnetic valve is arranged on the upper portion of the armature, the spring is arranged in the center of the electromagnetic valve, the sealing conical face with the armature valve rod is tightly attached to the sealing seat face in the through hole valve sleeve hole under the acting force of the spring to achieve closed sealing, upward electromagnetic force is generated when the electromagnetic valve is powered on, and the armature valve rod is pulled to offset the acting force of the spring. When the valve rod moves upwards, the sealing conical surface of the valve rod with the armature is separated from the sealing seat surface of the valve sleeve with the through hole, opening pressure relief is achieved, the pressure relief effect is good, and the using effect is improved; the lower portion of the valve rod with the armature controls the oil nozzle to be opened and closed through the connecting rod, and convenience is brought to oil injection time and oil quantity control work of the oil nozzle.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve assembly technical field, concretely relates to a novel valve assembly. BACKGROUND

[0002] The valve assembly is a component composed of a plurality of thyristors and their triggers, protections, voltage equalizers and valve reactors. A thyristor valve body suitable for a high-voltage solid-state composite switch device adopts a vertical structure and is composed of left and right phase valve bodies. The upper ends of the two phase valve bodies are connected by an ultra-thick epoxy resin plate, and the lower ends are fixed on a channel steel support. Each phase valve body is composed of a valve assembly, a dynamic voltage equalization resistor-capacitor assembly, a static voltage equalization resistor assembly, a high-frequency energy transmission CT assembly, a thyristor valve electronic board assembly and a composite support insulator. The components are connected by wires.

[0003] In order to guarantee the safe operation of the equipment and prolong the service life, the valve assembly needs to be periodically relieved, and the existing valve assembly often has poor pressure relief effect, which reduces its use effect. Therefore, we propose a new valve assembly. INVENTION CONTENTS

[0004] The utility model discloses a novel valve assembly, which solves the problem of poor pressure relief effect of the existing valve assembly and reduces its use effect.

[0005] To achieve the above object, the utility model provides the following technical scheme: a novel valve assembly, including valve rod with armature and through -hole valve sleeve, valve rod with armature includes armature and radial seal's guide cylinder, armature bottom is equipped with the flat position of oil discharge, the flat position of oil discharge bottom is equipped with sealing cone surface, the guide cylinder sets up in sealing cone surface bottom, the through -hole valve sleeve includes sealing seat surface and guide seal hole, shell, the guide seal hole sets up below sealing seat surface, the guide cylinder and guide seal hole are adapted, the armature upper portion is equipped with solenoid valve, the solenoid valve center is equipped with spring.

[0006] Preferably, one side of the sealing seat surface is provided with an oil inlet hole, the other side of the sealing seat surface is provided with an oil outlet hole, the left side of the oil inlet hole is provided with a pressure chamber, the right side of the oil inlet hole is provided with a high-pressure oil chamber, and the bottom of the high-pressure oil chamber is provided with a sealing ring.

[0007] Preferably, the sealing seat surface is in plane contact with the shell and is sealed by a mechanical seal.

[0008] Preferably, the top of the sealing seat surface is provided with an oil discharge groove, and one side of the oil discharge groove is provided with a guide support arc.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] 1. Under the action of the spring, the sealing cone surface of the valve stem with armature is tightly fitted with the sealing seat surface inside the through hole valve sleeve to achieve a closed seal. When energized, an upward electromagnetic force is generated, which pulls the valve stem with armature to counteract the spring force. When it moves upward, the sealing cone surface of the valve stem with armature separates from the sealing seat surface of the through hole valve sleeve, realizing opening and pressure relief. The pressure relief effect is good, which improves its performance.

[0011] 2. External high-pressure oil enters the high-pressure oil chamber through the oil hole, and then enters the pressure chamber through the oil inlet hole of the through-hole valve sleeve. There, pressure is accumulated. The solenoid valve pulls the armature-loaded valve stem to counteract the spring force, causing it to move upwards. The sealing cone surface of the armature-loaded valve stem separates from the sealing seat surface of the through-hole valve sleeve, opening and releasing pressure. The oil inlet flow rate is less than the pressure release flow rate, causing the fuel pressure in the pressure chamber to drop. This reduces the force on the armature-loaded valve stem, further accelerating its upward movement. When the solenoid valve is de-energized, the electromagnetic force disappears, and under the spring force, the armature-loaded valve stem returns to its sealed position, accumulating pressure in the pressure chamber, preparing for the next opening and closing cycle. The lower part of the armature-loaded valve stem controls the opening and closing of the fuel injector via a connecting rod, facilitating the control of the injector's injection timing and fuel quantity. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the connection between the armature valve stem and the through-hole valve sleeve of this utility model.

[0014] Figure 3 This is a cross-sectional view of the through-hole valve sleeve of this utility model;

[0015] Figure 4 This is a schematic diagram of the top structure of the through-hole valve sleeve of this utility model.

[0016] In the diagram: 1. Valve stem with armature; 2. Through-hole valve sleeve; 12. Armature; 13. Guide cylinder; 14. Oil drain flat position; 15. Sealing cone surface; 16. Solenoid valve; 17. Spring; 21. Sealing seat surface; 22. Guide sealing hole; 23. Housing; 24. Oil inlet; 25. Pressure chamber; 26. Oil outlet; 27. High-pressure oil chamber; 28. Sealing ring; 211. Oil drain groove; 212. Guide support arc. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4 The utility model provides a novel valve assembly technical scheme: including valve stem with armature 1 and through hole valve sleeve 2, valve stem with armature 1 includes armature 12 and radial seal guide cylinder 13, the bottom of armature 12 is equipped with oil leakage flat position 14, the bottom of oil leakage flat position 14 is equipped with sealing cone surface 15, guide cylinder 13 is arranged at the bottom of sealing cone surface 15, through hole valve sleeve 2 includes sealing seat surface 21 and guide sealing hole 22, shell 23, guide sealing hole 22 is arranged below sealing seat surface 21, guide cylinder 13 and guide sealing hole 22 are adapted, the upper portion of armature 12 is equipped with electromagnetic valve 16, and the center of electromagnetic valve 16 is equipped with spring 17.

[0019] Specifically, sealing seat surface 21 one side is equipped with oil inlet hole 24, and sealing seat surface 21 other side is equipped with oil outlet hole 26, and the left side of oil inlet hole 24 is equipped with pressure chamber 25, and the right side of oil inlet hole 24 is equipped with high-pressure oil cavity chamber 27, and the bottom of high-pressure oil cavity chamber 27 is equipped with sealing ring 28.

[0020] Specifically, sealing seat surface 21 and shell 23 plane contact and pass through mechanical seal.

[0021] Specifically, sealing seat surface 21 top is equipped with oil leakage groove 211, and oil leakage groove 211 one side is equipped with guide support arc 212.

[0022] In the embodiment, because guide cylinder 13 of valve stem with armature 1 lower end radial seal and guide sealing hole 22 of through hole valve sleeve 2 lower end are adapted, radial seal and the guiding effect when valve stem is slid up and down are realized, sealing cone surface 15 on valve stem with armature 1 and sealing seat surface 21 in the hole of through hole valve sleeve 2 are tightly attached to realize closing seal under the action of spring 17, the electromagnetic force in the direction of upward is generated when electrifying, and valve stem with armature 1 is pulled to offset the action of spring 17, when moving upward, sealing cone surface 15 on valve stem with armature 1 and sealing seat surface 21 on through hole valve sleeve 2 are separated, realize opening and pressure relief, and the pressure relief effect is better, and its use effect is improved.

[0023] The mechanical seal is realized by the flat surface of the shaft shoulder and the shell 23, the radial seal is realized by the sealing ring 28 between the through-hole valve sleeve 2 and the hole wall of the shell 23, the high-pressure oil enters the high-pressure oil chamber 27 through the oil hole, and then enters the pressure chamber 25 through the oil inlet hole 24 of the through-hole valve sleeve 2, and then is stored, the electromagnetic valve 16 pulls the armature valve rod 1 to offset the force of the spring 17, and moves upward, the sealing cone surface 15 on the armature valve rod 1 is separated from the sealing seat surface 21 on the through-hole valve sleeve 2, and the opening is realized, the pressure is released, the oil inlet amount of the oil inlet hole 24 is less than the pressure release oil amount, the fuel pressure of the pressure chamber 25 is reduced, the force acting on the armature valve rod 1 is reduced, and the speed of further pushing the armature valve rod 1 to move upward is further increased. When the electromagnetic valve 16 is powered off, the electromagnetic force disappears, and under the action of the spring 17, the armature valve rod 1 is reset and sealed, the pressure chamber 25 is stored, and the next opening and closing action cycle is prepared. The lower part of the armature valve rod 1 controls the opening and closing of the oil injection nozzle through the connecting rod, which brings convenience to the oil injection time and oil amount control of the oil injection nozzle.

[0024] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the statement "comprises a limited element" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the stated element.

[0025] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new valve assembly comprising a valve stem (1) with armature and a through-hole valve sleeve (2), characterized in that: The valve stem (1) with armature includes an armature (12) and a radially sealed guide cylinder (13), the bottom of the armature (12) is provided with an oil leakage flat position (14), the bottom of the oil leakage flat position (14) is provided with a sealing cone surface (15), the guide cylinder (13) is arranged at the bottom of the sealing cone surface (15), the through-hole valve sleeve (2) includes a sealing seat surface (21) and a guide sealing hole (22), a shell (23), the guide sealing hole (22) is arranged below the sealing seat surface (21), the guide cylinder (13) and the guide sealing hole (22) are matched, the upper part of the armature (12) is provided with an electromagnetic valve (16), the center of the electromagnetic valve (16) is provided with a spring (17).

2. A new valve assembly as claimed in claim 1, wherein: One side of the sealing seat surface (21) is provided with an oil inlet hole (24), the other side of the sealing seat surface (21) is provided with an oil outlet hole (26), the left side of the oil inlet hole (24) is provided with a pressure chamber (25), the right side of the oil inlet hole (24) is provided with a high-pressure oil cavity (27), the bottom of the high-pressure oil cavity (27) is provided with a sealing ring (28).

3. A new valve assembly as claimed in claim 1, wherein: The sealing seat surface (21) is in plane contact with the shell (23) and is sealed by a mechanical seal.

4. A new valve assembly as claimed in claim 1, wherein: The top of the sealing seat surface (21) is provided with an oil leakage groove (211), one side of the oil leakage groove (211) is provided with a guide support arc (212).

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