CN210218717U

CN210218717U - Forging regulating valve

Info

Publication number: CN210218717U
Application number: CN201921043840.0U
Authority: CN
Inventors: Qiang Sun; 孙强; Xinling Meng; 孟新凌; Liuzhong Zhou; 周刘中
Original assignee: NANTONG POWER STATION VALVE CO Ltd
Current assignee: NANTONG POWER STATION VALVE CO Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-03-31
Anticipated expiration: 2029-07-05

Abstract

The utility model relates to a governing valve technical field specifically discloses a forge governing valve, including valve body, cage cover, case, valve rod and valve gap, the cage cover is established in the inside of valve body, and the case is established in the inside of cage cover, the one end and the case fixed connection of valve rod, other end and valve gap swing joint, and cage cover top is provided with the pressure strip, is provided with housing screw on the pressure strip, and housing screw passes the pressure strip and supports and press in the cage cover top. The utility model has the advantages that: the utility model discloses a governing valve cage cover compact structure has realized four ring-opening formulas from the application of seal structure on the governing valve, improves high temperature high pressure valve sealing reliability, reduces valve weight, and the material saving cost adopts a governing valve body and actuating mechanism stand connection structure simultaneously, improves support radiating efficiency, reduces valve overall height.

Description

Forging regulating valve

Technical Field

The utility model belongs to the technical field of the governing valve, specifically a forge governing valve.

Background

Because the regulating valve cage needs pressing force to compress and seal, the traditional regulating valve is designed to adopt a flange stud to forcibly compress and seal a structure. The structure is more mature in application of a low-pressure regulating valve, but for regulating valves under high-temperature and high-pressure working conditions such as water supply, temperature reduction water and main steam of power stations in the power station industry, the nominal pressure of the valve is more than or equal to PN250, and if the structure is adopted, the elongation of a screw column is loose under high temperature and high pressure for a long time, so that sealing failure can be caused. Meanwhile, the size of the flange connecting stud of the high-temperature and high-pressure valve is large, so that the size of the valve body needs to be increased, and the weight of the valve is heavy. The actuating mechanism is directly connected with the valve cover of the valve, the valve cover needs to be lengthened to dissipate heat or add cooling fins, the valve cover is heightened to enable the blank of the valve cover to be heavy, the machining difficulty is high, and the valve cover cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a forge governing valve has realized the application of self sealss structure on the governing valve, solves the problem that the reliable self sealss structure of high temperature high pressure seal can't use on the governing valve, optimizes valve body and actuating mechanism connection structure.

In order to solve the problem, the utility model provides a forge governing valve specifically includes valve body, cage, case, valve rod and valve gap, the cage is established the inside of valve body, the inside at the cage is established to the case, the one end and the case fixed connection of valve rod, the other end and valve gap swing joint, the cage top is provided with the pressure strip, be provided with housing screw on the pressure strip, housing screw passes the pressure strip and supports and press in the cage top.

Further, space department between valve gap and the valve body is provided with from the sealing washer, the valve body is provided with the ring channel on along the inner chamber circumferencial direction, it is provided with the four-ring opening to inlay on the ring channel, the motion of sealing washer is followed in the restriction of four-ring opening.

Furthermore, a supporting plate is arranged above the valve body, the supporting plate is fixed on the valve body through a bolt, and the supporting plate is fixedly connected with the valve cover through a bolt.

Furthermore, an upright post bracket is arranged on the bearing plate, an upper flange is arranged at the top end of the upright post bracket, the upper flange is fixedly connected with the upright post bracket, and the valve rod is movably connected with the upper flange.

Furthermore, the upper end and the lower end of the cage are in sealing fit with the inside of the valve body through sealing gaskets.

Furthermore, the cage cover is provided with holes which become larger or smaller gradually from bottom to top.

Furthermore, the top end of the valve core is provided with a through hole, the side surface of the valve core is provided with an adjusting hole, and the cross sectional area of the adjusting hole is gradually increased or gradually decreased from bottom to top.

The utility model has the advantages that: the invention adopts the regulating valve cage cover compression structure, realizes the application of a four-open-loop self-sealing structure on the regulating valve, improves the sealing reliability of the high-temperature high-pressure valve, reduces the weight of the valve and saves the material cost; meanwhile, the structure for connecting the adjusting valve body with the actuating mechanism upright post is adopted, so that the support heat dissipation efficiency is improved, and the overall height of the valve is reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a main structure of a forged control valve according to the present invention;

FIG. 2 is an enlarged view of the internal structure of a forged regulator valve of the present invention;

in the figure: the valve comprises a valve body 1, a cage 2, a valve core 3, a self-sealing ring 4, a four-open ring 5, a valve rod 6, a pressure plate 7, a support plate 8, a stand column support 9, an upper flange 10, a valve cover 11, a pressure screw 12 and a sealing gasket 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In a specific embodiment of the utility model, as shown in fig. 1-2, specifically disclose a forging governing valve, including valve body 1, cage 2, case 3, valve rod 6 and valve gap 11, cage 2 establishes the inside of valve body 1, case 3 establishes the inside at cage 2, the one end and the case 3 fixed connection of valve rod 6, the other end and valve gap 11 swing joint, cage 2 top is provided with pressure strip 7, be provided with housing screw 12 on the pressure strip 7, housing screw 12 passes pressure strip 7 and supports and press in cage 2 top, seal gasket 13 and the internal seal cooperation of valve body 1 are passed through to cage 2 upper and lower both ends.

The utility model discloses a high-pressure high.

The valve comprises a valve body 1, and is characterized in that a supporting plate 8 is arranged above the valve body 1, the supporting plate 8 is fixed on the valve body 1 through a bolt, the supporting plate 8 is fixedly connected with a valve cover 11 through a bolt, a stand column support 9 is arranged on the supporting plate 8, an upper flange 10 is arranged at the top end of the stand column support 9, the upper flange 10 is fixedly connected with the stand column support 9, a valve rod 6 is movably connected with the upper flange 10, and meanwhile, a structure for connecting an adjusting valve body and an actuating mechanism stand column is adopted, so that the heat dissipation efficiency of the support is improved, and the overall height of.

The novel valve is characterized in that the cage cover 2 is provided with holes which are gradually enlarged or reduced from bottom to top, the top end of the valve core 3 is provided with a through hole, the side surface of the valve core 3 is provided with an adjusting hole, the cross section area of the adjusting hole is gradually enlarged or reduced from bottom to top, and the arrangement rule of the holes is opposite to the change of the cross section area of the adjusting hole on the valve core. The utility model discloses a hole of the variation in size on the cage cover 2 and the cooperation of the regulation hole on the case 3 realize the regulation of the inside different medium flow of valve body 1.

The utility model discloses an action process is: the adjusting process of the valve is realized by the relative opening position of the opening on the cage 2 and the valve core 3, the cage 2 is sealed with the valve body 1 through the sealing gasket 13, the pressure plate 7 is in threaded connection with the valve body 1, the pressure between the cage 2 and the valve body 1 can be tightly pressed through screwing the pressure screw 12, when the pressure inside the valve is increased, the pressure acting on the valve cover 7 is larger, the upward force acting on the valve cover 11 is larger, the pressure is larger through the four-open ring 5 limiting self-sealing ring 4, the larger the acting pressure on the valve cover 11 is, the better the sealing effect is, the upper part of the valve body adopts the support plate 8 and is connected with the valve body 1 through the stud nut, the lower part of the upright support 9 is connected with the support plate 8, the upper part of the upright support is connected with the upper.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. The utility model provides a forge governing valve, includes valve body (1), cage (2), case (3), valve rod (6) and valve gap (11), establish cage (2) the inside of valve body (1), establish the inside at cage (2) in case (3), the one end and case (3) fixed connection of valve rod (6), the other end and valve gap (11) swing joint, its characterized in that, cage top is provided with pressure strip (7), be provided with housing screw (12) on pressure strip (7), housing screw (12) are passed pressure strip (7) and are supported and press in cage (2) top.

2. A forged regulating valve according to claim 1, wherein a self-sealing ring (4) is arranged in a gap between the valve cover (11) and the valve body (1), an annular groove is arranged on the valve body (1) along the circumferential direction of the inner cavity, a four-open ring (5) is embedded in the annular groove, and the four-open ring (5) limits the movement of the self-sealing ring (4).

3. A forged control valve as claimed in claim 1, wherein a support plate (8) is arranged above said valve body (1), said support plate (8) is fixed on said valve body (1) by bolts, and said support plate (8) and said valve cover (11) are fixedly connected by bolts.

4. A forged regulating valve according to claim 3, wherein a column support (9) is arranged on said supporting plate (8), an upper flange (10) is arranged at the top end of said column support (9), said upper flange (10) is fixedly connected with said column support (9), and said valve rod (6) is movably connected with said upper flange (10).

5. A forged control valve as claimed in claim 1, wherein said cage (2) is sealingly engaged at its upper and lower ends with the interior of said valve body (1) by means of sealing gaskets (13).

6. A forged control valve as claimed in claim 1, wherein said cage (2) is provided with holes which become progressively larger or smaller from bottom to top.

7. The forged regulating valve according to claim 1, wherein the top end of the valve core (3) is provided with a through hole, the side surface of the valve core (3) is provided with a regulating hole, and the cross-sectional area of the regulating hole is gradually increased or decreased from bottom to top.