阅读说明：本技术 一种新型高温蒸汽减压阀 (Novel high-temperature steam pressure reducing valve ) 是由 张博 郑红丽 娄冬梅 刘朋 韩佳琦 于 2020-08-07 设计创作，主要内容包括：一种新型高温蒸汽减压阀,属于调节类阀门技术领域。本发明解决了现有的减压阀当介质流动时振动和噪音较大,由于内部密封件热膨胀造成的内漏和外漏的问题。本发明包括阀体、低噪音阀座、多级套筒、平衡阀芯、阀盖和阀杆,阀体的内部安装有低噪音阀座和多级套筒,多级套筒布置安装在低噪音阀座上部,平衡阀芯安装在多级套筒中,阀盖通过螺栓固定安装在阀体上,阀杆安装在阀盖内部,阀杆的末端与平衡阀芯连接。本发明结构简单,便于拆装,通过多级套筒的布置有效的减小了大压差蒸汽工况下振动、噪声的产生,并通过补偿碟簧的作用使减压阀获得了良好的密封使用效果。(A novel high-temperature steam pressure reducing valve belongs to the technical field of adjusting valves. The invention solves the problems of internal leakage and external leakage caused by thermal expansion of an internal sealing element due to larger vibration and noise when a medium flows in the traditional pressure reducing valve. The low-noise balance valve comprises a valve body, a low-noise valve seat, a multi-stage sleeve, a balance valve core, a valve cover and a valve rod, wherein the low-noise valve seat and the multi-stage sleeve are arranged in the valve body, the multi-stage sleeve is arranged on the upper portion of the low-noise valve seat, the balance valve core is arranged in the multi-stage sleeve, the valve cover is fixedly arranged on the valve body through bolts, the valve rod is arranged in the valve cover, and the tail end of the. The invention has simple structure and convenient disassembly and assembly, effectively reduces the generation of vibration and noise under the working condition of high-pressure-difference steam through the arrangement of the multi-stage sleeves, and ensures that the pressure reducing valve obtains good sealing use effect through the action of the compensation disc spring.)

1. A novel high-temperature steam pressure reducing valve is characterized in that: including valve body (1), low noise disk seat (2), multistage sleeve (4), balanced case (5), valve gap (7) and valve rod (9), the internally mounted of valve body (1) has low noise disk seat (2) and multistage sleeve (4), multistage sleeve (4) are arranged and are installed on low noise disk seat (2) upper portion, install in multistage sleeve (4) balanced case (5), bolt fixed mounting is passed through on valve body (1) in valve gap (7), install inside valve gap (7) valve rod (9), the end and balanced case (5) of valve rod (9) are connected.

2. The novel high-temperature steam pressure reducing valve according to claim 1, characterized in that: the multistage sleeve (4) comprises a first-stage sleeve (4-1), a second-stage sleeve (4-2) and a third-stage sleeve (4-3), the first-stage sleeve (4-1) is sleeved on the outer side of the second-stage sleeve (4-2), the second-stage sleeve (4-2) is sleeved on the outer side of the third-stage sleeve (4-3), a first expansion area (4-4) and a second expansion area (4-4) are formed in a gap between the first-stage sleeve (4-1) and the second-stage sleeve (4-2), and a second expansion area (4-5) and a third expansion area are formed in a gap between the second-stage sleeve (4-2) and the third-stage sleeve (4-.

3. The novel high-temperature steam pressure reducing valve according to claim 2, characterized in that: the first-stage sleeve (4-1), the second-stage sleeve (4-2) and the third-stage sleeve (4-3) are respectively provided with a plurality of small holes, and the small holes of the two adjacent stages of sleeves are arranged in a staggered mode relatively.

4. The novel high-temperature steam pressure reducing valve according to claim 1, characterized in that: install disk seat gasket (3) between valve body (1) and low noise disk seat (2), install between valve body (1) and valve gap (7) well flange gasket (6).

5. The novel high-temperature steam pressure reducing valve according to claim 4, wherein: and a compensation disc spring (8) is arranged between the valve cover (7) and the multi-stage sleeve (4).

6. The novel high-temperature steam pressure reducing valve according to claim 1, characterized in that: the side wall and the bottom of the low-noise valve seat (2) are uniformly provided with a plurality of holes.

Technical Field

The invention relates to a novel high-temperature steam pressure reducing valve, and belongs to the technical field of regulating valves.

Background

The pressure reducing valve is mainly applied to the fluid control occasion with high-temperature steam as a medium, and the working principle of the pressure reducing valve is that an actuating mechanism signal is given to drive a valve rod to move so as to drive a valve core to move up and down, change the throttling area of a throttling pair and play a role in regulating pressure;

the existing pressure reducing valve has the following defects:

1. the existing pressure reducing valve structure mainly adopts a single-stage window type sleeve or a single-seat plunger structure, and because the medium of the pressure reducing valve is steam with high temperature and large pressure difference, the problems of vibration, noise and the like frequently occur in the use process;

2. the existing pressure reducing valve mainly adopts a sleeve compression movable valve seat structure, the lower end of a valve seat and the interior of a valve body are sealed in a compression sealing sheet mode, and in a high-temperature environment, due to temperature changes under different working conditions, the internal part of the pressure reducing valve can generate difference of thermal expansion amount, so that the compression amount of a valve seat gasket or a middle flange gasket is changed, the simultaneous compression cannot be ensured, and the problems of internal leakage and external leakage are easily caused;

3. present relief pressure valve is mostly the integral type structure, need remove the pipeline of export or entry and just can realize dismantling when the part damage in the valve needs to be changed, has wasted a large amount of dismouting time, has wasted a large amount of manpowers simultaneously.

In view of the above, a new high temperature steam pressure reducing valve with low vibration, low noise and no inner and outer leakage of the valve seat is needed to solve the above problems.

Disclosure of Invention

The invention solves the problems that the existing pressure reducing valve has larger vibration and noise when a medium flows and inner leakage and outer leakage are caused by the thermal expansion of an inner sealing element, and discloses a novel high-temperature steam pressure reducing valve. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.

The technical scheme of the invention is as follows:

the utility model provides a novel high temperature steam relief pressure valve, includes valve body, low noise disk seat, multistage sleeve, balanced case, valve gap and valve rod, and the internally mounted of valve body has low noise disk seat and multistage sleeve, and multistage sleeve arranges to be installed on low noise disk seat upper portion, and balanced case is installed in multistage sleeve, and the valve gap passes through bolt fixed mounting on the valve body, and the valve rod is installed inside the valve gap, and the end and the balanced case of valve rod are connected.

Further, multistage sleeve includes one-level sleeve, second grade sleeve and tertiary sleeve, and one-level sleeve suit is in the second grade sleeve outside, and second grade sleeve suit is in the tertiary sleeve outside, and the space between one-level sleeve and the second grade sleeve forms one, the dilatation district between the second grade sleeve, and the space between second grade sleeve and the tertiary sleeve forms two, the dilatation district between the tertiary sleeve.

Furthermore, a plurality of small holes are respectively formed in the first-stage sleeve, the second-stage sleeve and the third-stage sleeve, and the small holes of the two adjacent stages of sleeves are arranged in a staggered mode relatively.

Further, a valve seat gasket is arranged between the valve body and the low-noise valve seat, and a middle flange gasket is arranged between the valve body and the valve cover.

Furthermore, a compensation disc spring is arranged between the valve cover and the multi-stage sleeve.

Furthermore, a plurality of holes are uniformly formed in the side wall and the bottom of the low-noise valve seat.

The invention has the beneficial effects that:

1. according to the novel high-temperature steam pressure reducing valve, the throttling holes of the multi-stage sleeve are arranged in a staggered manner and the low-noise valve seat is matched for use, so that the vibration and noise generation under the working condition of high-pressure-difference steam is effectively reduced, the damage of an internal part caused by medium erosion is reduced, and the service life of the valve is prolonged;

2. according to the novel high-temperature steam pressure reducing valve, the problem of internal leakage and external leakage of the valve seat is effectively solved through the valve seat gasket and the middle flange gasket, and meanwhile, the problem that the middle flange gasket or the valve seat gasket cannot be simultaneously and effectively compressed and sealed due to temperature change is solved through the compensation disc spring, so that a good sealing use effect is obtained.

3. The novel high-temperature steam pressure reducing valve is simple in structure and convenient to maintain, all parts in the valve can be directly disassembled after disassembling the valve cover of the valve under the condition that a pipeline or a valve body is not moved, and a large amount of disassembling and assembling time is saved during maintenance.

Drawings

FIG. 1 is a sectional view of the overall structure of a novel high-temperature steam pressure reducing valve;

FIG. 2 is a cross-sectional view of a multi-stage cartridge;

FIG. 3 is a schematic view of the structure of part A of FIG. 2;

FIG. 4 is a cross-sectional view of a low noise valve seat.

In the figure, 1-valve body, 2-low-noise valve seat, 3-valve seat gasket, 4-multi-stage sleeve, 5-balance valve core, 6-middle flange gasket, 7-valve cover, 8-compensation disc spring, 9-valve rod, 4-1-first stage sleeve, 4-2-second stage sleeve, 4-3-third stage sleeve, 4-4-first stage sleeve and second stage sleeve expansion area, and 4-5-second stage sleeve and third stage sleeve expansion area.

Detailed Description

In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.