阅读说明：本技术 一种轴流式降压组件及轴流式渐变降压阀内件结构 (Axial-flow type pressure reduction assembly and axial-flow type gradual change pressure reduction valve internal part structure ) 是由 陆坤铭 张从礼 徐晓禹 顾乐乐 陈洋 于 2021-02-09 设计创作，主要内容包括：本发明涉及一种轴流式降压组件及轴流式渐变降压阀内件结构,组件中间为阀芯孔,组件中心下部开有引流槽,引流槽与阀芯孔相连通,引流槽上方依次间隔设有降压孔和降压槽,组件上部开有出液口,出液口连通最上层的降压孔或降压槽。本发明具有有效降低压力,防止空化腐蚀,降低阀门噪音,减少振动,方便可靠易维修,使用寿命长等优点,适用于特殊高压差工艺控制过程。本发明拆装和维修方便,无需设计专用的拆装工装,也不需要提供专门的气动或者液压辅助工具来拆装轴流式降压组件,同时与复杂的迷宫流道加工相比较,轴向分布的降压孔只需要简单的车、钻加工就能够实现,无需通过加工中心来实现,加工成本低,设备利用率高,也能够满足苛刻的交货周期。(The invention relates to an axial-flow type pressure reducing component and an axial-flow type gradual pressure reducing valve internal part structure. The invention has the advantages of effectively reducing pressure, preventing cavitation corrosion, reducing valve noise, reducing vibration, being convenient, reliable and easy to maintain, having long service life and the like, and is suitable for the control process of a special high-pressure-difference process. The axial-flow type pressure reducing assembly is convenient to disassemble, assemble and maintain, a special disassembling tool does not need to be designed, a special pneumatic or hydraulic auxiliary tool does not need to be provided for disassembling and assembling the axial-flow type pressure reducing assembly, and compared with the complex labyrinth runner processing, the axially-distributed pressure reducing holes can be realized only by simple turning and drilling, the pressure reducing holes are not needed to be realized through a processing center, the processing cost is low, the equipment utilization rate is high, and the harsh delivery cycle can be met.)

1. An axial-flow pressure reduction assembly, comprising: the improved water-saving valve is characterized in that a valve core hole (11-1) is formed in the middle of the component, a drainage groove (11-2) is formed in the lower portion of the center of the component, the drainage groove (11-2) is communicated with the valve core hole (11-1), a pressure reduction hole (11-3) and a pressure reduction groove (11-4) are sequentially arranged above the drainage groove (11-2) at intervals, a liquid outlet (11-5) is formed in the upper portion of the component, and the liquid outlet (11-5) is communicated with the pressure reduction hole (11-3) or the pressure reduction groove (11-4) in the uppermost layer.

2. The axial pressure drop assembly of claim 1, wherein: the pressure reducing holes (11-3) are uniformly distributed in the assembly in an annular shape and are arranged in an increasing mode from bottom to top.

3. The axial pressure drop assembly of claim 1, wherein: the component is formed by stacking a plurality of axial-flow type pressure reducing sheets.

4. The axial pressure drop assembly of claim 3, wherein: the number of the axial-flow type pressure reducing pieces is determined according to the working condition.

5. The utility model provides an axial-flow type gradual change step-down valve internals structure which characterized in that: the structure comprises a valve body (9), a valve cover (8) is installed on the upper portion of the valve body (9), an installation cavity is arranged between the valve body (9) and the valve cover (8), a water inlet channel (9-1) is formed in one side of the valve body (9), a water outlet channel (9-2) is formed in the other side of the valve body (9), an installation cavity water inlet is formed in one side of the installation cavity, an installation cavity water outlet is formed in the other side of the installation cavity, the installation cavity water inlet is communicated with the water inlet channel (9-1), the installation cavity water outlet is communicated with the water outlet channel (9-2), a valve seat (12) is installed in the installation cavity water inlet installation cavity, the installation cavity water outlet is provided with any axial flow type pressure reducing component (11) according to the claims 1-4, the upper end of the axial flow type pressure reducing component (11) abuts against the, A valve core (2) is arranged in the valve seat (12) in a sliding mode, a valve rod (7) fixedly connected with the valve core (2) is arranged above the valve core (2), and the valve rod (7) is installed in the valve cover (8) in a sliding mode.

6. The axial flow type gradual pressure reduction valve trim structure as set forth in claim 5, wherein: a medium circulation hole (12-1) is formed in the valve seat (12), and a valve seat sealing inclined plane is arranged at the upper end of the medium circulation hole (12-1).

7. The axial flow type gradual pressure reduction valve trim structure as set forth in claim 5, wherein: the bottom of the valve core (2) is provided with a valve core sealing inclined plane.

8. The axial flow type gradual pressure reduction valve trim structure as set forth in claim 5, wherein: a balance sealing ring seat (4) is arranged between the valve cover (8) and the axial flow type pressure reduction component (11), and a balance hole (2-1) is arranged above the valve core (2); a sliding hole (4-1) is formed in the balance sealing ring seat (4), a balance cavity is enclosed by the valve cover (8), the balance sealing ring seat (4) and the valve core (2), an avoiding groove (4-2) is formed in the lower portion of the balance sealing ring seat (4), and one side of the avoiding groove (4-2) is communicated with an avoiding outlet (4-3).

9. The axial flow type gradual pressure reduction valve trim structure as set forth in claim 8, wherein: a first balance sealing ring (3) is arranged between the periphery of the valve core (2) and the slide hole (4-1), and a second sealing gasket (6) is arranged between the valve cover (8) and the balance sealing ring seat (4).

10. The axial flow type gradual pressure reduction valve trim structure as set forth in claim 9, wherein: and a sealing ring groove is formed in the inner wall of the sliding hole (4-1).

Technical Field

The invention belongs to the technical field of valves, and particularly relates to an axial-flow type pressure reduction assembly and an axial-flow type gradual pressure reduction valve internal part structure.

Background

In devices such as atmospheric and vacuum distillation, delayed coking, hydrocracking, hydrofining, catalytic cracking, sulfur recovery and the like, the working conditions of high pressure difference are often accompanied. With the occurrence of the high pressure difference working condition, certain destructive factors such as flash evaporation, cavitation and noise which harm the use of the valve can be brought, and the occurrence of the factors can damage the valve internals and the inner wall of the valve body. The pressure at which the high pressure difference liquid flows through the pipeline throttling is higher or lower than the vaporization Pressure (PV), cavitation or flash evaporation phenomena are generated, and noise is the shearing stress caused by the turbulent flow of the fluid; the traditional pressure reduction structure adopts a labyrinth structure and a radial pressure reduction hole structure. The labyrinth structure adopts a labyrinth flow channel on the labyrinth piece to change the flow direction of the medium for multiple times so as to achieve the purposes of energy consumption and pressure reduction; firstly, the labyrinth runner is complex to process, the production period is long, the requirement of customers with short delivery period cannot be met, secondly, the labyrinth assembly is difficult to disassemble, assemble and maintain, a special tool is needed, and finally, the fluid flowing out of the labyrinth runner directly scours the inner wall of the valve body, so that the damage to the inner wall of the valve body is large. The radial pressure reduction hole structure is characterized in that holes are machined in the wall of a radial cylinder, a large jetting fluid is decomposed into a plurality of small flow beams, so that concentrated single total energy is decomposed into a plurality of small energy units, energy is consumed through a plurality of small pressure reduction holes, and the purpose of pressure reduction is finally achieved; although the radial pressure reducing holes are simple to process, different pressure reducing levels can not be designed according to working conditions due to the structural definition of the radial pressure reducing holes, and meanwhile, the damage of direct scouring of the labyrinth structure on the inner wall of the valve body is avoided, so that the uncontrollable damage of outward leakage of the valve is increased. It follows that the two conventional structures cannot achieve the effect of accurately controlling the voltage reduction at low cost.

Disclosure of Invention

Aiming at the problems, the invention provides an axial-flow type pressure reducing component and an axial-flow type gradual pressure reducing valve internal part structure, wherein the pressure reducing structure has the advantages of lower processing precision requirement, convenience in disassembly and maintenance, obvious pressure reducing effect, accuracy and controllability.

According to the technical scheme provided by the invention: the utility model provides an axial-flow type pressure reduction assembly, be the case hole in the middle of the subassembly, open the subassembly center lower part has the drainage groove, the drainage groove with the case hole is linked together, drainage groove top interval is equipped with step-down hole and step-down groove in proper order, open on subassembly upper portion has the liquid outlet, the liquid outlet communicates the superiors step-down hole or step-down groove.

As a further improvement of the invention, the depressurization holes are uniformly distributed in the assembly in an annular shape and are arranged from bottom to top in an increasing mode.

As a further improvement of the invention, the component is formed by stacking a plurality of axial-flow type pressure reduction sheets.

As a further improvement of the invention, the number of the axial-flow type pressure reducing sheets is determined according to working conditions.

The utility model provides an axial-flow type gradual change step-down valve internals structure, the structure includes the valve body, valve body upper portion installation valve gap, the valve body with be equipped with the installation cavity between the valve gap, open valve body one side has the inlet channel, and open the opposite side has out the water course, installation cavity one side is the installation cavity water inlet, and the opposite side is the installation cavity delivery port, installation cavity water inlet and inlet channel intercommunication, installation cavity delivery port and water course intercommunication, installation disk seat in the installation cavity water inlet installation cavity, the installation cavity delivery port be equipped with as above axial-flow type step-down subassembly, axial-flow type step-down subassembly upper end supports the valve gap, and the lower extreme supports the disk seat, it is equipped with the case to slide in axial-flow type step-down subassembly, the disk seat, the case top is equipped with.

As a further improvement of the invention, a medium circulation hole is arranged in the valve seat, and a valve seat sealing inclined plane is arranged at the upper end of the medium circulation hole.

As a further improvement of the invention, the bottom of the valve core is provided with a valve core sealing inclined plane.

As a further improvement of the invention, a balance sealing ring seat is arranged between the valve cover and the axial flow type pressure reducing component, and a balance hole is arranged above the valve core; the balance sealing ring seat is internally provided with a sliding hole, the valve cover, the balance sealing ring seat and the valve core enclose a balance cavity, the lower part of the balance sealing ring seat is provided with an avoiding groove, and one side of the avoiding groove is communicated with an avoiding outlet.

As a further improvement of the invention, a first balance sealing ring is arranged between the periphery of the valve core and the slide hole, and a second sealing gasket is arranged between the valve cover and the balance sealing ring seat.

As a further improvement of the invention, the inner wall of the slide hole is provided with a sealing ring groove.

The positive progress effect of this application lies in:

1) the axial-flow type pressure reducing assembly is convenient to disassemble, assemble and maintain, a special disassembling tool does not need to be designed, a special pneumatic or hydraulic auxiliary tool does not need to be provided for disassembling and assembling the axial-flow type pressure reducing assembly, and compared with the complex labyrinth runner machining, the axial-distribution pressure reducing holes can be realized only by simple turning and drilling, the axial-flow type pressure reducing assembly is realized without a machining center, the machining cost is low, the equipment utilization rate is high, and the harsh delivery cycle can be met.

2) The combined passage (the single annular avoidance groove and the plurality of avoidance outlets) arranged at the end part of the sealing ring seat can effectively reduce the direct scouring of the fluid to the inner wall of the valve body, protect the inner wall of the valve body and prolong the service life.

3) The axial-flow type pressure reducing component achieves the purpose of reducing pressure by overlapping and gradually increasing the axial-flow type pressure reducing sheets, the pressure reducing stage number is realized by adjusting the number of the axial-flow type pressure reducing sheets, and the specific number is accurately matched according to the measurement of the working condition.

Drawings

FIG. 1 is a schematic view of an axial flow pressure drop assembly of the present invention.

FIG. 2 is a cross-sectional view of an axial pressure drop assembly of the present invention.

FIG. 3 is a schematic diagram of an axial flow gradual pressure reduction valve trim configuration of the present invention.

Fig. 4 is a schematic structural view of the balanced seal ring seat of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.

In the figures 1-4, the valve core 2, the balance sealing ring seat 4, the slide hole 4-1, the valve rod 7, the valve cover 8, the valve body 9, the water inlet channel 9-1, the water outlet channel 9-2, the valve seat 12, the medium circulation hole 12-1 and the like are included.

As shown in the figure 1-2, the axial-flow type pressure reducing component 11 is an axial-flow type pressure reducing component 11, the axial-flow type pressure reducing component 11 is of a hollow structure, a valve core hole 11-1 is formed in the middle and used for installing a valve core 2, an annular drainage groove 11-2 is formed in the lower portion of the center of the axial-flow type pressure reducing component 11, the drainage groove 11-2 is communicated with the valve core hole 11-1, pressure reducing holes 11-3 and pressure reducing grooves 11-4 are sequentially formed above the drainage groove 11-2 at intervals, a liquid outlet 11-5 is formed in the upper portion of the axial-flow type pressure reducing component 11, and the uppermost layer of the liquid outlet 11-5.

In this embodiment, the pressure reducing holes 11-3 are uniformly distributed in the axial flow type pressure reducing assembly 11 in a ring shape, and are arranged in an increasing manner from bottom to top.

The axial-flow type pressure reducing component 11 is formed by overlapping a plurality of axial-flow type pressure reducing sheets, each axial-flow type pressure reducing sheet reduces the pressure in a mode of gradually increasing pressure reducing holes, and the number of the axial-flow type pressure reducing sheets is specifically measured according to the working condition; each axial-flow type pressure reducing piece is provided with a plurality of pattern areas, the pressure reducing holes are distributed outside the pattern areas, and the pattern areas of adjacent axial-flow type pressure reducing pieces are staggered and overlapped, so that fluid entering a valve body can be ensured to enter the axial-flow type pressure reducing pieces step by step through the pattern areas.

As shown in figure 3, the axial-flow type gradual-change depressurization valve internal part structure comprises a valve body 9, a valve cover 8 is installed on the upper portion of the valve body 9, an installation cavity is arranged between the valve body 9 and the valve cover 8, a water inlet channel 9-1 is formed in one side of the valve body 9, a water outlet channel 9-2 is formed in the other side of the valve body, an installation cavity water inlet is formed in one side of the installation cavity, an installation cavity water outlet is formed in the other side of the installation cavity, the installation cavity water inlet is communicated with the water inlet channel 9-1, the installation cavity water outlet is communicated with the water outlet channel 9-2, a valve seat 12 is installed in the installation cavity water inlet installation cavity, an axial-flow type. The balance sealing ring seat 4, the axial flow type pressure reduction component 11 and the valve seat 12 are internally provided with a valve core 2 in a sliding way, a valve rod 7 fixedly connected with the valve core 2 is arranged above the valve core 2, and the valve rod 7 is arranged in the valve cover 8 in a sliding way.

The valve seat 12 is provided with a medium flowing hole 12-1 for medium flowing, and the upper end of the medium flowing hole 12-1 is provided with a valve seat sealing inclined plane.

The bottom of the valve core 2 is provided with a valve core sealing inclined plane which is matched with the valve seat sealing inclined plane.

Sealing gaskets 1 and 5 are respectively arranged between the lower part of the valve seat 12 and the valve body 9 and between the valve body 9 and the valve cover 8, and the sealing gaskets 1 and 5 play a role in isolating medium leakage.

The packing component 10 is arranged between the valve cover 8 and the valve rod 7, the sealing effect is achieved through the packing component 10, and the phenomenon of leakage of the valve is avoided.

The valve cover 8 is fixed on the upper part of the valve body 9 through a fastener.

The valve core 2 is fixedly connected with the valve rod 7 in a thread mode.

When the regulating valve is closed, the valve rod 7 pushes the valve core 2 to move downwards, so that the valve core sealing inclined surface is tightly attached to the valve seat sealing inclined surface, and a medium is blocked from passing through the water inlet of the mounting cavity.

When the regulating valve is opened, the valve rod 7 drives the valve core 2 to move upwards to separate the valve core sealing inclined plane from the valve seat sealing inclined plane, blocking media enter the valve core hole 11-1 from the water inlet channel 9-1 and sequentially flow into the pressure reduction hole 11-3 and the pressure reduction groove 11-4 through the drainage groove 11-2, and flow into the water outlet channel 9-2 from the liquid outlet 11-5 after the pressure is gradually reduced.

In order to reduce the pulling force of the valve stem 7 when opening the regulating valve. A balance sealing ring seat 4 is arranged between the valve cover 8 and the axial flow type pressure reducing component 11, and a balance hole 2-1 is arranged above the valve core 2.

As shown in FIG. 4, a slide hole 4-1 is opened in the balanced seal ring seat 4, the valve core 2 can slide in the slide hole 4-1, and a balance cavity is enclosed by the valve cover 8, the balanced seal ring seat 4 and the valve core 2.

An avoidance groove 4-2 is annularly arranged at the lower part of the balance sealing ring seat 4, and one side of the avoidance groove 4-2 is communicated with a plurality of avoidance outlets 4-3.

The avoidance groove 4-2 is communicated with the liquid outlet 11-5, and the avoidance outlet 4-3 is communicated with the water outlet channel 9-2.

In order to keep the pressure of the balance cavity and prevent leakage, a first balance sealing ring 3 is arranged between the periphery of the valve core 2 and the slide hole 4-1, and a second sealing gasket 6 is arranged between the valve cover 8 and the balance sealing ring seat 4.

The inner wall of the sliding hole 4-1 is provided with a sealing ring groove, and a first balance sealing ring 3 is arranged in the sealing ring groove.

When the regulating valve is closed, a part of medium enters the balance cavity, and the pressure intensity of one side of the valve core 2 close to the water inlet of the installation cavity can be reduced.

In the embodiment of the invention, firstly, the axial flow type pressure reducing component 11 is convenient to disassemble, assemble and maintain, a special disassembling and assembling tool is not required to be designed, a special pneumatic or hydraulic auxiliary tool is not required to disassemble and assemble the axial flow type pressure reducing component, the disassembling and assembling are time-saving and labor-saving, secondary damage to parts is not caused, and the maintenance utilization rate is high; secondly, a plurality of axial-flow type pressure reducing pieces are combined in a step-by-step overlapping mode to achieve the purpose of reducing the pressure, the specific number of the axial-flow type pressure reducing pieces is measured according to the working condition, and the accuracy and effectiveness of reducing the pressure are guaranteed. The annular avoidance groove 4-2 and the avoidance outlets 4-3 on the balance sealing ring seat 4 can reduce the direct scouring of fluid on the inner wall of the valve body, protect the inner wall of the valve body and prolong the service life.

The axial-flow type gradual-change pressure reducing valve internal part structure meets the requirements of convenience in disassembly, assembly and maintenance, is low in part machining precision, low in cost for replacing the whole part and good in economic benefit; finally, the effect of reducing the blood pressure is obvious and controllable. By combining the characteristics, the invention has the advantages of stable and reliable structure, convenient assembly and disassembly and lower production cost, and can meet the requirements of most of the existing high-pressure-difference working conditions.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.