CN209943548U

CN209943548U - Temperature-reducing water regulating valve

Info

Publication number: CN209943548U
Application number: CN201920737174.4U
Authority: CN
Inventors: 王骥; 武雷; 曹立姿; 杨磊
Original assignee: GUAN WOKE LIQUID CONTROL CO Ltd
Current assignee: GUAN WOKE LIQUID CONTROL CO Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-01-14
Anticipated expiration: 2029-05-22

Abstract

The application provides a temperature-reducing water regulating valve which comprises a valve body and a valve cover fixedly arranged on the upper part of the valve body; the valve body comprises a body, a water inlet and a water outlet which are arranged at two sides of the body, a valve seat arranged in the body, an annular throttling piece arranged on the valve seat, a valve core arranged in the annular throttling piece and matched with the annular throttling piece, and a valve rod arranged at the upper part of the valve core; the utility model provides a desuperheating water governing valve is equipped with the choke ring that sleeve and a plurality of annular dish coincide are constituteed on the disk seat, and the sleeve cooperatees with the case, changes telescopic through-flow cross-section through the lift of case to reach the purpose of adjusting desuperheating water flow. The sleeve is matched with the throttling ring, all the throttling rings are opened while the flow is controlled, and multi-stage pressure reduction is carried out, so that the pressure difference is reduced, the defects of high noise and gasification erosion are overcome, the adjusting precision is improved, the service life is prolonged, and the temperature can be effectively adjusted and controlled.

Description

Temperature-reducing water regulating valve

Technical Field

The application relates to the technical field of regulating valves, in particular to a temperature-reducing water regulating valve.

Background

When the boiler or the steam turbine fluctuates in operation or the temperature of water and steam with higher temperature needs to be reduced to a required temperature value, the temperature-reducing water quantity is adjusted by automatically opening or closing the temperature-reducing water adjusting valve according to a sensor signal or a temperature signal sent to the temperature-reducing water quantity by an adjusted medium, so that the temperature parameter of the adjusted medium is controlled within the safety range of the system or within the parameter range required by the operation of the system. The working condition of the temperature-reducing water regulating valve is quite severe, the temperature-reducing water regulating valve operates under a high pressure difference state, the regulating performance is deteriorated due to cavitation, even the functions are lost, the regulating function is lost, a large amount of leakage occurs, the system parameters cannot guarantee normal operation, and a large amount of energy is lost. Due to the design structure of the existing temperature-reducing water regulating valve, the performance difference is large, and particularly under the working condition of a large unit, the problems of cavitation, large noise, easy leakage, short service life, unstable flow curve, poor automatic quality and the like can occur quickly.

Disclosure of Invention

The present application is provided to solve the above-mentioned technical problems.

The technical scheme adopted by the application is as follows: the temperature-reducing water regulating valve is characterized by comprising a valve body and a valve cover fixedly arranged at the upper part of the valve body; the valve body comprises a body, a water inlet and a water outlet which are arranged at two sides of the body, a valve seat arranged in the body, an annular throttling piece arranged on the valve seat, a valve core arranged in the annular throttling piece and matched with the annular throttling piece, and a valve rod arranged at the upper part of the valve core;

the valve comprises a valve seat and is characterized in that an inverted cone-shaped opening is formed in the valve seat, the annular throttling element comprises a throttling device arranged on the valve seat and a flow equalizing cover arranged on the upper portion of the throttling device, the valve core is of a barrel-type structure with a downward opening, an inverted cone-shaped tangent plane is arranged on the periphery of an opening at the lower end of the valve core, a first sealing ring is arranged at the inverted cone-shaped opening of the valve seat, a second sealing ring matched with the first sealing ring is arranged at the opening at the lower end of the valve core, an annular groove is formed in.

Furthermore, the throttling device comprises a sleeve arranged on the valve seat and matched with the valve core and a throttling ring sleeved outside the sleeve, a plurality of flow regulating holes are formed in the sleeve, the throttling ring comprises a plurality of overlapped annular discs, each annular disc comprises an annular disc body, a plurality of concentric annular grooves formed in the annular disc body and a plurality of radial communicating grooves communicated with adjacent annular grooves, and the radial communicating grooves close to the outer side and the inner side on the same annular groove are arranged in a staggered mode.

Furthermore, the sleeve comprises a first sleeve and a second sleeve sleeved outside the first sleeve, and the flow adjusting holes are arranged in a staggered mode on the circumferences of the first sleeve and the second sleeve.

Further, the diameters of the flow regulating holes in the circumferences of the first sleeve and the second sleeve are sequentially increased from bottom to top.

Furthermore, a plurality of first annular plates are arranged on the outer side of the first sleeve, a plurality of second annular plates are arranged on the inner side of the second sleeve, and the first annular plates and the second annular plates are arranged in a staggered mode.

The application has the advantages and positive effects that: the utility model provides a desuperheating water governing valve is equipped with the choke ring that sleeve and a plurality of annular dish coincide are constituteed on the disk seat, and the sleeve cooperatees with the case, changes telescopic through-flow cross-section through the lift of case to reach the purpose of adjusting desuperheating water flow. The sleeve is matched with the throttling ring, all the throttling rings are opened while the flow is controlled, and multi-stage pressure reduction is carried out, so that the pressure difference is reduced, the defects of high noise and gasification erosion are overcome, the adjusting precision is improved, the service life is prolonged, and the temperature can be effectively adjusted and controlled.

In addition to the technical problems addressed by the present application, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present application, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a temperature-reducing water regulating valve provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an annular throttle provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first seal ring and a second seal ring provided in the embodiment of the present application;

FIG. 4 is a schematic structural diagram of a throttling device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an annular disc provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a sleeve provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of a first annular plate and a second annular plate provided by the embodiment of the application.

In the figure: 1, a valve body; 110 a body; a water inlet 120; 130 water outlet; 140 a valve seat; 150 annular flow restriction member; 160 a valve core; 170 a valve stem; 2, a valve cover; 3, a throttling device; 310 a sleeve; 311 a first sleeve; 312 a second sleeve; 320 a throttle ring; 321 an annular disk; 321a an annular disc body; 321b an annular groove; 321c radial communication grooves; 4, a flow equalizing cover; 5, sealing a first sealing ring; 510 an annular groove; 6, a second sealing ring; 610 a clamping piece; 7 flow regulating holes; 8 a first annular plate; 9 second annular plate

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

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

As shown in fig. 1, the temperature-reducing water regulating valve is characterized by comprising a valve body 1 and a valve cover 2 fixedly arranged at the upper part of the valve body 1; the valve body 1 comprises a body 110, a water inlet 120 and a water outlet 130 which are arranged at two sides of the body 110, a valve seat 140 arranged in the body 110, an annular throttling element 150 arranged on the valve seat 140, a valve core 160 arranged in the annular throttling element 150 and matched with the annular throttling element 150, and a valve rod 170 arranged at the upper part of the valve core 160;

as shown in fig. 2 and 3, the valve seat 140 is provided with an inverted cone opening, the annular throttling element 150 includes a throttling device 3 disposed on the valve seat 140 and a flow equalizing cover 4 disposed on the upper portion of the throttling device 3, the valve core 160 is of a barrel structure with a downward opening, an inverted cone tangent plane is disposed on the periphery of the opening at the lower end of the valve core 160, a first sealing ring 5 is disposed at the inverted cone opening of the valve seat 140, a second sealing ring 6 matched with the first sealing ring 5 is disposed at the opening at the lower end of the valve core 160, an annular groove 510 is disposed on the first sealing ring 5, and a clamping member 610 corresponding to the annular groove 510 is disposed on the second.

In this embodiment, a water inlet 120 and a water outlet 130 are disposed on two sides of a body 110 of a valve body 1, the water inlet 120 is located below the water outlet 130, a valve seat 140 is disposed on the body 110 between the water inlet 120 and the water outlet 130, an annular throttling member 150 is disposed on an upper portion of the valve seat 140, a valve core 160 is disposed in the annular throttling member 150 and is matched with the annular throttling member 150, a valve rod 170 is disposed on an upper portion of the valve core 160, and the valve core 160 can move up and down under the driving of the valve rod 170; in this embodiment, the annular throttling element 150 is provided with the throttling device 3, the valve core 160 is of a barrel type structure adapted to the throttling device 3, and the up-and-down movement of the valve core 160 can effectively control the water flow of the throttling device 3; in this embodiment, be equipped with the back taper opening on the disk seat 140, the back taper opening part is equipped with sealing washer one 5, and case 160 lower extreme opening part is equipped with sealing washer two 6, and sealing washer one 5 and sealing washer two 6 cooperate and have improved the sealed effect of valve body 1 greatly, are equipped with annular groove 510 on the sealing washer one 5 simultaneously, are equipped with on the sealing washer two 6 with annular groove 510 matched with fastener 610, and one has improved the sealed effect of valve body 1.

As shown in fig. 4 and 5, in a preferred embodiment, the throttling device 3 includes a sleeve 310 disposed on the valve seat 140 and engaged with the valve core 160, and a throttling ring 320 sleeved outside the sleeve 310, the sleeve 310 is provided with a plurality of flow regulating holes 7, the throttling ring 320 includes a plurality of overlapped annular discs 321, the annular discs 321 include annular disc bodies 321a, a plurality of concentric annular grooves 321b disposed on the annular disc bodies 321a, and a plurality of radial communicating grooves 321c communicating with adjacent annular grooves 321b, and the radial communicating grooves 321c near the outer side and the inner side on the same annular groove 321b are alternately disposed.

In this embodiment, the throttling device 3 is provided with a sleeve 310 and a throttling ring 320, the sleeve 310 is provided with a plurality of flow regulating holes 7, the sleeve 310 is matched with the valve core 160, the up-and-down movement of the valve core 160 can effectively control the number of the flow regulating holes 7 through which water flows, and further control the water flow, in this embodiment, the throttling ring 320 is sleeved on the outer side of the sleeve 310, the throttling ring 320 is formed by overlapping a plurality of annular discs 321, a plurality of concentric annular grooves 321b are arranged on an annular disc body 321a, adjacent annular grooves 321b pass through a plurality of radial communicating grooves 321c, and the radial communicating grooves 321c close to the outer side and the inner side on the same annular groove 321b are staggered, when in operation, water flows into the outer ring from the inner ring through the radial communicating grooves 321c, and in the flowing process, water flows into the annular groove 321b through the inner radial communicating grooves 321c in the same annular groove, when the water flows through the outer radial communicating groove 321c, two water flows flowing oppositely are converged oppositely, molecules flowing at high speed generate impact, friction and vortex, a large amount of energy is consumed, the pressure is reduced, and when the water flows from the inner annular groove 321b to the outer annular groove 321b, the volume of the annular groove 321b is gradually increased, so that the flow rate of the water flow is further reduced; in this embodiment, the sleeve 310 is matched with the throttle ring 320, and the sleeve 310 is matched with the valve core 160 to limit the flow and the water flow is crossed and collided in the throttle ring 320, so that the optimal speed reduction and pressure reduction effects of the water flow are achieved, the cavitation prevention effect of the structure is good, and the service life of the temperature reduction water regulating valve is prolonged.

In a preferred embodiment, as shown in fig. 6, the sleeve 310 comprises a first sleeve 311 and a second sleeve 312 disposed outside the first sleeve 311, and the flow regulating holes 7 are staggered on the circumferences of the first sleeve 311 and the second sleeve 312.

In this embodiment, the sleeve 310 includes a first sleeve 311 and a second sleeve 312, the first sleeve 311 and the second sleeve 312 are both provided with flow rate adjusting holes 7, wherein the first sleeve 311 is matched with the valve core 160, and the flow rate is controlled by controlling the number of the flow rate adjusting holes 7 on the first sleeve 311; in this embodiment, the second sleeve 312 is sleeved on the outer side of the first sleeve 311, the flow adjusting holes 7 are arranged in a staggered manner on the circumferences of the first sleeve 311 and the second sleeve 312, and the first sleeve 311 and the second sleeve 312 are matched with each other to perform primary collision pressure reduction and speed reduction on water flow.

In a preferred embodiment, the diameters of the flow regulating holes 7 on the circumferences of the first sleeve 311 and the second sleeve 312 are sequentially increased from bottom to top.

In this embodiment, the diameters of the flow regulating holes 7 on the circumferences of the first sleeve 311 and the second sleeve 312 are sequentially increased from bottom to top, so that the valve core 160 and the first sleeve 311 are matched to accurately control water flow, and the first sleeve 311 and the second sleeve 312 are matched to perform preliminary collision, pressure reduction and speed reduction on water flow.

In a preferred embodiment, as shown in fig. 7, a plurality of first annular plates 8 are arranged on the outer side of the first sleeve 311, a plurality of second annular plates 9 are arranged on the inner side of the second sleeve 312, and the first annular plates 8 and the second annular plates 9 are arranged in a staggered manner.

In this embodiment, the outer side of the first sleeve 311 is provided with a plurality of first annular plates 8, the outer side of the second sleeve 312 is provided with a plurality of second annular plates 9, the first annular plates 8 and the second annular plates 9 are matched to form a serpentine channel, and in the process that water flows upwards through the serpentine channel below, the water flows collide with the walls of the first sleeve 311 and the second sleeve 312 to gradually decelerate, so that preliminary deceleration and depressurization of the water flow are facilitated, and the service life of the desuperheating water regulating valve is further prolonged.

The embodiments of the present application have been described in detail, but the description is only for the preferred embodiments of the present application and should not be construed as limiting the scope of the application. All equivalent changes and modifications made within the scope of the present application shall fall within the scope of the present application.

Claims

1. The temperature-reducing water regulating valve is characterized by comprising a valve body (1) and a valve cover (2) fixedly arranged on the upper part of the valve body (1); the valve body (1) comprises a body (110), a water inlet (120) and a water outlet (130) which are arranged at two sides of the body (110), a valve seat (140) arranged in the body (110), an annular throttling piece (150) arranged on the valve seat (140), a valve core (160) which is arranged in the annular throttling piece (150) and matched with the annular throttling piece (150), and a valve rod (170) arranged at the upper part of the valve core (160);

be equipped with the back taper opening on disk seat (140), annular throttling element (150) including set up throttling arrangement (3) on disk seat (140) and set up cover (4) that flow equalizes on throttling arrangement (3) upper portion, case (160) are the barrel structure of opening decurrent, and case (160) lower extreme opening periphery is equipped with the back taper tangent plane, disk seat (140) back taper opening part is equipped with sealing washer (5), case (160) lower extreme opening part is equipped with and seals washer one (5) matched with sealing washer two (6), be equipped with annular groove (510) on sealing washer one (5), be equipped with on sealing washer two (6) with the corresponding fastener (610) of annular groove (510).

2. A desuperheating water regulating valve according to claim 1, wherein the throttling means (3) comprises a sleeve (310) disposed on the valve seat (140) to be fitted with the valve core (160) and a throttling ring (320) fitted around the outside of the sleeve (310), the sleeve (310) is provided with a plurality of flow regulating holes (7), the throttling ring (320) comprises a plurality of overlapped annular discs (321), the annular discs (321) comprise annular disc bodies (321a), a plurality of concentric annular grooves (321b) disposed on the annular disc bodies (321a) and a plurality of radial communicating grooves (321c) communicating with adjacent annular grooves (321b), and the radial communicating grooves (321c) on the same annular groove (321b) near the outside and near the inside are alternately disposed.

3. A desuperheating water regulating valve as claimed in claim 2, wherein said sleeve (310) comprises a first sleeve (311) and a second sleeve (312) fitted over the first sleeve (311), said first sleeve (311) and second sleeve (312) having flow regulating holes (7) arranged alternately on the circumference.

4. A desuperheating water regulating valve as claimed in claim 3, wherein the flow regulating holes (7) on the circumference of the first sleeve (311) and the second sleeve (312) increase in diameter from bottom to top in sequence.

5. A desuperheating water regulating valve as claimed in claim 3 or 4, wherein a plurality of first annular plates (8) are provided outside said first sleeve (311), a plurality of second annular plates (9) are provided inside said second sleeve (312), and said first annular plates (8) and said second annular plates (9) are staggered.