CN215891125U

CN215891125U - High-pressure angle type throttling stop valve

Info

Publication number: CN215891125U
Application number: CN202121587337.9U
Authority: CN
Inventors: 辜长明; 谭清宏; 彭林
Original assignee: Sichuan Zhongyou Leyi Energy Equipment Manufacturing Co ltd
Current assignee: Sichuan Zhongyou Leyi Energy Equipment Manufacturing Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-22
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a high-pressure angle type throttling stop valve, which relates to the field of valves and comprises a valve seat, a valve body, a valve core, a valve cover and a hand wheel, wherein the valve body is connected with the valve cover through a bolt, the valve seat is arranged in the valve body and corresponds to the valve core, a valve core sleeve is arranged in the valve body, the valve core sleeve is in contact with the valve cover and the valve seat, the valve core is connected with a valve rod and moves up and down along the valve core sleeve under the driving of the valve rod, a throttling part is designed at the lower end of the valve core, a strip-shaped hole is formed in the valve core sleeve, the valve can perform secondary throttling, the throttling effect is improved, the sealing effect is good, and the service life of the valve can be prolonged.

Description

High-pressure angle type throttling stop valve

Technical Field

The utility model relates to the technical field of valves, in particular to a high-pressure angle type throttling stop valve.

Background

The opening and closing part of the stop valve is a plug-shaped valve clack, the sealing surface is a plane or a conical surface, and the valve clack moves linearly along the center line of the valve seat. The motion form of the valve rod also has a lifting rotating rod type, and the stop valve refers to a valve with a closing member moving along the center line of a valve seat. According to this form of movement of the valve flap, the change in the valve seat opening is proportional to the valve flap travel. The valve rod of the valve has relatively short opening or closing stroke and reliable cut-off function, and the valve is suitable for regulating flow rate owing to the proportional relation between the valve seat port change and the valve clack stroke. Therefore, this type of shut-off valve is very suitable for shut-off or regulation and throttling.

The high-pressure angle type cut-off throttle valve is a forced sealing cut-off throttle valve used in special working condition occasions. The high-pressure high-temperature pipeline is widely applied to high-pressure and high-temperature pipelines of systems such as thermal power plants, nuclear power plants, petroleum, chemical engineering, pharmacy, chemical fertilizers and the like, and the applicable media are mainly as follows: water, oil products, steam, alkali liquid of mixed gas of nitrogen and hydrogen, liquid ammonia and the like. It is popular because the flange structure centerline of such valves is designed at a 90 deg.c right angle, and in high pressure angle shut-off valves, the flow needs to change direction only once, so that the pressure drop across such valves is less than that of conventional structures.

The valve has simple structure, flexible operation, temperature and pressure resistance and convenient assembly and replacement. In the opening process, the friction force between the sealing surfaces is small, the valve stroke is small, and the manufacture and the maintenance are convenient. However, the high-pressure angle type stop throttle valve with general universality at present usually adopts primary throttling, namely throttling is realized through a sealing surface between a valve seat and a valve clack, the sealing surface is not durable, the throttling effect is not obvious, and the valve has a long service life and is not obvious in sealing effect.

Therefore, in the prior art, a chinese utility model patent document with an authorization publication number of CN203023507U and an authorization publication date of 2013, 6 and 26 is proposed to solve the above technical problems, and the technical solution disclosed in the patent document is as follows:

the utility model discloses a separated angle type stop throttle valve, which comprises a valve body, a valve base, a lower valve rod, an upper valve rod, a valve frame and a handle, and is characterized in that: the valve base (3) is installed in the inlet end hole of the valve body in an inserting mode, one end of the valve base is connected and sealed with the valve body, the other end of the valve base is in contact with the bottom end of the lower valve rod, and the outer circle of the valve base is sealed with the inner circular wall of the valve body through two O-shaped sealing rings. The utility model discloses a sealed effect of reinforcing valve alleviates the medium and erodees sealed dynamics, prolongs the life of valve, reduces use cost.

Above-mentioned comparison file is sealed through setting up two O type sealing washers on the valve base excircle and the inner circular wall of valve body, and the entrance point conical surface that is formed the conical surface and is sealed with the spherical surface by valve base bottom spherical surface and valve body again combines, and double seal reaches and guarantees valve base and the sealed effect of valve body, and simultaneously, the bottom through will descending the valve rod is processed into the hemisphere, alleviates the release with medium scouring force, makes the medium smooth, and the resistance is little, reduces the medium and erodees sealed dynamics, prolongs the life of valve head. However, only through set up two O type sealing rings and the interior wall seal of valve body and promote sealed effect on the valve base excircle, promote the effect unobvious, simultaneously because only change bottom and the material of lower valve rod, still have the unobvious problem of throttle effect.

Disclosure of Invention

The utility model aims to provide the high-pressure angle type throttling stop valve which can perform secondary throttling, improves the throttling effect and has a good sealing effect aiming at the defects and the defects in the prior art.

The utility model is realized by adopting the following technical scheme:

high pressure angle formula throttle stop valve, its characterized in that: the valve body is connected with the valve cover through bolts, the valve seat is installed in the valve body and corresponds to the valve core, a valve core sleeve is arranged in the valve body, the valve core sleeve is in contact with the valve cover and the valve seat, the valve core is connected with the valve rod and moves up and down along the valve core sleeve under the driving of the valve rod, a throttling element is designed at the lower end of the valve core, and a strip-shaped hole is formed in the valve core sleeve.

Furthermore, the throttling element is of a triangular structure with a hollow center.

Further, the throttling element and the valve core are integrally formed.

Further, the strip-shaped holes are tapered strip-shaped holes with large upper parts and small lower parts.

Furthermore, the number of the strip-shaped holes is 8, and the strip-shaped holes are uniformly distributed on the valve core sleeve.

Further, the valve core, the valve body and the valve core sleeve are of a cage type balance structure.

Furthermore, hard alloy is deposited on the bottom of the valve core and the position corresponding to the sealing surface of the valve seat, and a sealing ring is arranged at the joint of the valve core sleeve, the valve seat and the valve core.

Furthermore, the sealing ring is arranged in a connecting gap between the valve core sleeve and the valve seat.

Furthermore, two O-shaped sealing rings are arranged on the valve core and are arranged up and down along the axial direction of the valve core.

Further, still install the support on the valve gap, the support passes through bolt fixed connection with the valve gap, is provided with the windowing on the support, windowing department is used for installing gland.

The beneficial effects of the utility model are as follows:

1. the lower end of the valve core is provided with a throttling element which is a primary throttling, the valve core sleeve is provided with a conical strip-shaped hole which is a secondary throttling, namely, the throttling area of the throttling element of the valve core and the valve seat hole is changed when the valve core moves up and down in the valve core sleeve to realize the primary throttling, and meanwhile, the throttling area of the throttling hole window of the valve core sleeve is changed by the valve core to realize the secondary throttling, so that the throttling effect is increased, the secondary throttling can be realized, the force of partial scouring is reduced, and the service life of the valve is prolonged.

2. Hard alloy is deposited on the bottom of the valve core and the position corresponding to the sealing surface of the valve seat, a sealing ring is arranged at the joint of the valve core sleeve, the valve seat and the valve core, and the valve core is downwards contacted with the sealing ring when the valve needs to be closed, so that soft and hard sealing is realized.

3. The sealing ring is arranged in a connecting gap between the valve core sleeve and the valve seat, and the sealing ring is designed to be a hidden structure which is not washed by fluid, so that zero leakage of sealing can be guaranteed, and the service life of the sealing ring is prolonged.

4. The valve core is provided with two O-shaped sealing rings which are arranged up and down along the axial direction of the valve core, so that the sealing performance of the valve is improved.

5. The throttling piece and the valve core are integrally formed to improve the material utilization rate, the forming performance, the forging precision and the mechanical property of the valve core, so that the cost is reduced, the efficiency is improved, the throttling capacity of the valve core is improved, and the service life of the valve core is prolonged.

Drawings

The utility model will be described in further detail with reference to the following description taken in conjunction with the accompanying drawings and detailed description, in which:

FIG. 1 is a schematic view of the overall arrangement of the present invention;

FIG. 2 is a schematic view of the construction of the orifice member of the present invention;

the labels in the figure are:

1. the valve comprises a valve body, 2, a valve seat, 3, an O-shaped sealing ring, 4, a sealing ring, 5, a valve core, 6, an O-shaped sealing ring, 7, a valve core sleeve, 8, an O-shaped sealing ring, 9, a valve cover, 10, a packing gland, 11, a valve rod, 12, a support, 13, a hand wheel, 14, a strip-shaped hole, 15 and a throttling element.

Detailed Description

Example 1

As a preferred embodiment of the utility model, a high-pressure angle type throttling stop valve adopts a cage type balance structure, the valve mainly plays roles of throttling, pressure reducing and stopping and comprises a valve seat 2, a valve body 1, a valve core 5, a valve cover 9 and a hand wheel 13, the valve body 1 is connected with the valve cover 9 through a bolt, the valve seat 2 is installed in the valve body 1 and corresponds to the valve core 5, a valve core sleeve 7 is arranged in the valve body 1, the valve core sleeve 7 is in contact with the valve cover 9 and the valve seat 2, and the valve core 5 is connected with a valve rod 11 and is designed to be in a low-in flow direction and a high-out flow direction. The lower end of the valve core 5 is provided with a throttling element 15 which is a first-stage throttling, the valve core sleeve 7 is provided with a conical strip-shaped hole 14 (the lower part is small and the upper part is large) which is a second-stage throttling, namely, the throttling area of the throttling element 15 of the valve core 5 and the hole 2 of the valve seat is changed when the valve core 5 moves up and down in the valve core sleeve 7 to realize the first-stage throttling, and meanwhile, the throttling area of the throttling hole window of the valve core sleeve 7 is changed by the valve core 5 to realize the second-stage throttling.

Example 2

As another preferred embodiment of the present invention, referring to fig. 1 of the specification, the valve is designed according to GB/T22513-2013 and JB/T13602-2018, a high pressure angle type throttling stop valve, which adopts a cage type balance structure, the valve mainly plays roles of throttling, pressure reducing and stopping, and comprises a valve seat 2, a valve body 1, a valve core 5, a valve cover 9 and a hand wheel 13, the valve body 1 is connected with the valve cover 9 through bolts, the valve seat 2 is installed in the valve body 1 and corresponds to the valve core 5, a valve core sleeve 7 is arranged in the valve body 1, the valve core sleeve 7 is in contact with the valve cover 9 and the valve seat 2, and the valve core 5 is connected with a valve rod 11 and is designed to have a low-in-high-out flow direction. The lower end of the valve core 5 is provided with a throttling element 15 which is a first-stage throttling, the valve core sleeve 7 is provided with a conical strip-shaped hole 14 (the lower part is small and the upper part is large) which is a second-stage throttling, namely, the throttling area of the throttling element 15 of the valve core 5 and the hole 2 of the valve seat is changed when the valve core 5 moves up and down in the valve core sleeve 7 to realize the first-stage throttling, and meanwhile, the throttling area of the throttling hole window of the valve core sleeve 7 is changed by the valve core 5 to realize the second-stage throttling. The valve can be used as a stop valve to play a stopping role and can reach zero leakage, hard alloy is overlaid at the position, corresponding to the sealing surface of the valve seat 2, of the bottom of the valve core 5, a sealing ring 4 is arranged at the joint of the valve core sleeve 7, the valve seat 2 and the valve core 5, the valve core 5 is downwards contacted with the sealing ring 4 when the valve needs to be closed to realize soft and hard sealing, the sealing ring 4 is arranged in a connecting gap between the valve core sleeve 7 and the valve seat 2, the valve is a hidden structure design which is not washed by fluid, zero leakage of sealing can be guaranteed, the service life of the sealing ring 4 is prolonged, the throttling part 15 and the valve core 5 are integrally formed to improve the material utilization rate, the forming performance, the forging precision and the mechanical performance of the valve core 5, so that the cost is reduced, the efficiency is improved, the throttling capacity and the service life of the valve core 5 are improved, two O-shaped sealing rings 6 are arranged on the valve core 5, the two O-shaped sealing rings 6 are arranged up and down along the axial direction of the valve core 5 to increase the sealing performance of the valve, the valve cover 9 is further provided with a support 12, the support 12 is fixedly connected with the valve cover 9 through bolts, the support 12 is provided with a window, and the window is used for installing a packing gland 10.

Example 3

As another preferred embodiment of the utility model, a high-pressure angle type throttling stop valve adopts a cage type balance structure, the valve mainly plays roles of throttling, pressure reducing and stopping and comprises a valve seat 2, a valve body 1, a valve core 5, a valve cover 9 and a hand wheel 13, the valve body 1 is connected with the valve cover 9 through bolts, the valve seat 2 is installed in the valve body 1 and corresponds to the valve core 5, a valve core sleeve 7 is arranged in the valve body 1, the valve core sleeve 7 is in contact with the valve cover 9 and the valve seat 2, and the valve core 5 is connected with a valve rod 11 and is designed to be in a low-in flow direction and a high-out flow direction. The lower end of the valve core 5 is provided with a throttling element 15 which is a first-stage throttling, the valve core sleeve 7 is provided with a conical strip-shaped hole 14 (the lower part is small and the upper part is large) which is a second-stage throttling, namely, the throttling area of the throttling element 15 of the valve core 5 and the hole 2 of the valve seat is changed when the valve core 5 moves up and down in the valve core sleeve 7 to realize the first-stage throttling, and meanwhile, the throttling area of the throttling hole window of the valve core sleeve 7 is changed by the valve core 5 to realize the second-stage throttling. The valve can play the effect of ending as the stop valve simultaneously, can reach zero leakage, and 5 bottoms of case have carbide with the sealed face of disk seat 2 corresponds the position build-up welding, and case sleeve 7, disk seat 2 and the handing-over department of case 5 are provided with sealing washer 4, and case 5 is to downward contacting with sealing washer 4 when the valve need be closed, realizes the soft or hard sealed, throttle 15 and 5 integrated into one piece of case are used for improving 5 material utilization of case, formability, forging precision, mechanical properties to reduce cost, raise the efficiency, increase 5 throttling capacity and life of case.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. High pressure angle formula throttle stop valve, its characterized in that: including disk seat (2), valve body (1), case (5), valve gap (9) and hand wheel (13), valve body (1) is connected through the bolt with valve gap (9), and it is corresponding with case (5) to install in valve body (1) valve seat (2), is equipped with case sleeve (7) in valve body (1), and case sleeve (7) contact with valve gap (9) and disk seat (2), and case (5) are connected with valve rod (11), and reciprocates along case sleeve (7) under valve rod (11) drive, case (5) lower extreme design has throttling element (15), is provided with bar hole (14) on case sleeve (7).

2. The high-pressure angle type throttling stop valve according to claim 1, characterized in that the throttling member (15) is of a hollow-centered triangular structure.

3. The high-pressure angle type throttling stop valve according to claim 1, characterized in that the throttling element (15) is integrally formed with the valve core (5).

4. The high-pressure angle type throttling stop valve according to claim 1, characterized in that the strip-shaped hole (14) is a conical strip-shaped hole (14) with a large upper part and a small lower part.

5. The high-pressure angle type throttling stop valve according to claim 1, characterized in that the number of the strip-shaped holes (14) is 8, and the strip-shaped holes are uniformly distributed on the valve core sleeve (7).

6. The high-pressure angle type throttling stop valve according to claim 1, characterized in that the valve core (5), the valve body (1) and the valve core sleeve (7) are of a cage type balance structure.

7. The high-pressure angle type throttling stop valve according to claim 1, characterized in that hard alloy is welded on the bottom of the valve core (5) at a position corresponding to the sealing surface of the valve seat (2), and a sealing ring (4) is arranged at the joint of the valve core sleeve (7), the valve seat (2) and the valve core (5).

8. The high-pressure angle type throttling stop valve according to claim 7, characterized in that the sealing ring (4) is arranged in a connecting gap between the valve core sleeve (7) and the valve seat (2).

9. The high-pressure angle type throttling stop valve according to claim 1, characterized in that two O-shaped sealing rings (6) are arranged on the valve core (5), and the two O-shaped sealing rings (6) are arranged up and down along the axial direction of the valve core (5).

10. The high-pressure angle type throttling stop valve according to claim 1, characterized in that a bracket (12) is further installed on the valve cover (9), the bracket (12) is fixedly connected with the valve cover (9) through bolts, a window is arranged on the bracket (12), and the window is used for installing a packing gland (10).