CN218883066U

CN218883066U - Outer valve stem tee bend angle seat valve and spout connection structure thereof

Info

Publication number: CN218883066U
Application number: CN202222809033.3U
Authority: CN
Inventors: 曹义东; 曹一鸣
Original assignee: Beijing Gaozhan Science & Tech
Current assignee: Beijing Gaozhan Science & Tech
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-04-18
Anticipated expiration: 2032-10-25

Abstract

The utility model provides an outer valve stem three-way angle seat valve and a spout connecting structure thereof, wherein the outer valve stem three-way angle seat valve comprises a three-way valve body, a valve clack and a driving mechanism; the three-way valve body comprises: a first port, a second port, and a third port; a valve seat matched with the valve clack is arranged in the first port; the valve clack is movably arranged in the three-way valve body in the direction close to and far away from the valve seat; the driving mechanism is connected with the valve clack and used for driving the valve clack to move so as to open and close the first port. The utility model discloses actuating mechanism's flexible end setting is outside at the valve body to avoided working medium direct action such as pulse shock wave and pulse efflux to serve at this is flexible, thereby reduced actuating mechanism's damage probability, life is longer. And meanwhile, the telescopic end is arranged outside the valve body, so that the blocking of working media is reduced.

Description

Outer valve stem tee bend angle seat valve and spout connection structure thereof

Technical Field

The utility model belongs to the technical field of boiler soot blower technique and specifically relates to an outer valve stem tee bend angle seat valve and spout connection structure that can be used to control spout break-make is related to.

Background

The soot blower belongs to an auxiliary boiler and has the functions of blowing off accumulated soot on a heating surface of a boiler in the running process of the boiler, reducing smoke resistance and improving heat exchange efficiency. The soot blowing effect of the soot blower directly influences the operation load and the thermal efficiency of the boiler, and has very important significance on the normal operation and the economic benefit of the boiler.

Outside the oil gas removing boiler, most of power generation/heat supply boilers taking coal, biomass, garbage and the like as fuels and most of industrial waste heat boilers need to be provided with soot blowers.

The boiler soot blowers are of various types, and the common types include steam soot blowers, hydraulic soot blowers, sound wave soot blowers, explosion pulse shock wave soot blowers, gas gun type pulse shock wave soot blowers and the like. The explosion pulse shock wave soot blower is also called as deflagration pulse shock wave soot blower, thermal explosion pulse shock wave soot blower, weak explosion pulse shock wave soot blower, deflagration shock wave soot blower, explosion shock wave soot blower and the like, is called as deflagration soot blower, thermal explosion soot blower, weak explosion soot blower, pulse soot blower, shock wave soot blower, explosion wave soot blower and the like for short, belongs to a new soot blower, and has only twenty years of development history in China. The soot blower mainly performs soot blowing by means of comprehensive effects of impact of compression shock waves generated by explosion of premixed combustible gas or other explosion agents and the like, and because the shock waves do not cause serious scouring wear to heating surfaces of a boiler tube bundle and the like steam soot blowing, the soot blower is low in manufacturing cost and low in failure rate and operation cost, and the soot blower is quite popular in application.

The explosion pulse shock wave soot blower mainly comprises an explosion pulse shock wave generator and a nozzle: the explosion pulse shock wave generator, also called pulse generator, shock wave generator, etc., also called explosion tank, deflagration tank, explosion tank, thermal explosion tank, etc., is the place where combustible premixed gas or other explosion agent is exploded, and also is the most important part of the explosion pulse shock wave soot blower, and is generally installed outside the furnace wall of the boiler.

The outlet of the nozzle is penetrated through the furnace wall and extended into the flue of the boiler, the inlet is connected with the outlet of the pulse shock wave generator directly or through the shock wave guide tube, and the compressed shock wave generated by the pulse shock wave generator is transmitted into the flue of the boiler through the nozzle to blow the soot. The gas gun type pulse shock wave soot blower is also called as gas energy pulse shock wave soot blower, is evolved by domestic science and technology personnel through an air gun, mainly comprises a gas gun type pulse shock wave generator and a nozzle, the gas gun type pulse shock wave generator mainly comprises a pressure container and a pulse valve, soot blowing is carried out by utilizing the comprehensive effects of instantaneous opening of the pulse valve, instantaneous release of pressure gas to generate compression shock waves, impact of the compression shock waves and the like, and the pressure gas comprises steam, compressed air, compressed nitrogen and the like. Compared with an explosion pulse shock wave soot blower, the explosion pulse shock wave soot blower has the advantages that gas is not needed, so that the explosion pulse shock wave soot blower is safer, the opening of a pulse valve belongs to mechanical action, the action speed of the pulse valve is different from the explosion speed of the explosion pulse shock wave soot blower by orders of magnitude, so that the generated compression shock wave is not strong, the soot blowing effect of the compression shock wave is not obvious enough, soot blowing is performed by means of direct blowing of suddenly ejected air flow, the blowing range is limited, and the boiler tube bundle is easily subjected to 'tube explosion' due to scouring and abrasion, so that the explosion pulse shock wave soot blower is not adopted.

The nozzle of the gas gun type pulse shock wave soot blower is also called as a spray pipe and is basically the same as the nozzle of the explosion pulse shock wave soot blower.

A boiler typically includes a plurality or even many heat exchangers requiring soot blowing, distributed at different locations in the boiler flue, and thus a boiler typically requires multiple or many soot blowers. In boilers employing pulse shock sootblowers, a number of individual nozzles are typically installed at different locations in a single boiler because the nozzles are typically stationary and the effective sootblowing range of a single nozzle is limited.

For some purposes, it is sometimes desirable to provide a valve for the nozzle to control the on/off of the nozzle, but because the operating environment of the nozzle is harsh, especially the shock wave and the pulse jet during soot blowing cause very strong shock and vibration to the valve, the existing valve is easy to damage, has a short service life, and needs to be maintained frequently or replaced, thereby resulting in too high maintenance and use cost to be feasible.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outer valve stem tee bend angle seat valve and spout connection structure thereof to solve at least one above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the utility model provides a pair of outer valve stem tee bend angle seat valve, include: the three-way valve body, the valve clack and the driving mechanism;

the three-way valve body comprises: a first port, a second port, and a third port;

a valve seat matched with the valve clack is arranged in the first port;

the valve clack is movably arranged in the three-way valve body in the direction close to and far away from the valve seat;

the driving mechanism is connected with the valve clack and used for driving the valve clack to move so as to open and close the first port.

Furthermore, the whole tee valve body is Y-shaped, and the first port, the second port and the third port are arranged in a pairwise crossing manner.

Furthermore, the whole three-way valve body is T-shaped, and the second port and the third port are coaxially and oppositely arranged; the first port is arranged perpendicular to the second port and the third port.

Furthermore, the valve also comprises a wing plate, and a slit is arranged on the side wall of the three-way valve body along the direction close to and far away from the valve seat; the inner side end of the wing plate is fixedly connected with the valve clack, and the outer side end of the wing plate extends out of the slit and is connected with the driving mechanism. Wherein, the driving mechanism drives the valve clack to move back and forth through a wing plate.

Further, a protective cover is arranged outside the slit and used for covering the slit and part or all of the driving mechanism from the outside.

Furthermore, the driving mechanism is an electric, pneumatic or hydraulic telescopic mechanism.

Furthermore, the telescopic mechanism is completely arranged in the protective housing, and the telescopic end of the telescopic mechanism is connected with the outer end of the wing plate;

or the main body of the telescopic mechanism is arranged outside the protective housing, and the telescopic end of the telescopic mechanism extends into the protective housing from the outside through a via hole in the protective housing and is connected with the outer side end of the wing plate.

Wherein, be provided with seal structure between via hole and telescopic machanism's the flexible end.

Further, the valve clack is plunger-shaped; or the cross section of the valve clack is U-shaped (or called front disc shape);

a sealing working end face is arranged on one side of the valve seat of the valve clack; and a sealing end face matched with the sealing working end face is arranged on one side of the valve clack of the valve seat.

And in the valve closing state, metal hard seal is formed between the valve clack and the valve seat.

Further, the cross section of the valve clack is H-shaped.

Further, a soft sealing element is arranged on one side of the valve seat of the valve clack; and a pressure plate is fixed on the end surface of the outer side of the soft sealing element, and the outer diameter of the pressure plate is smaller than the inner diameter of the valve seat.

Further, the soft sealing element is a rubber element, a polytetrafluoroethylene plastic element (or other plastic elements) or a ceramic fiber element.

Furthermore, the valve clack is arranged on one side of the valve seat, and the inner hole of the valve seat is in a horn mouth shape matched with the cone table in a sealing mode.

The device further comprises a controller, a first position sensor and a second position sensor, wherein the first position sensor and the second position sensor are respectively arranged in the protective housing and at two ends of the travel of the wing plate; the controller is respectively connected with the first position sensor, the second position sensor and the driving mechanism, and determines the valve clack position information according to the feedback information of the first position sensor and the second position sensor; the controller controls the valve clack to reciprocate through the driving mechanism.

Further, the driving mechanism is an electric pushing cylinder, an air cylinder or a hydraulic cylinder.

The application discloses a second aspect of the nozzle connecting structure with the outer valve rod three-way angle seat valve, wherein the outer valve rod three-way angle seat valve is used as a communicating node and is arranged on a conveying pipeline of working media of a soot blower; the second port and the third port are used as an inlet and an outlet and are respectively communicated with the conveying pipelines at two sides; the first port is connected with the spout.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

the utility model provides an outer valve stem tee bend angle seat valve, actuating mechanism's flexible end (like the valve rod) sets up in the valve body outside to avoided working medium direct action such as pulse shock wave and pulse efflux to serve at this is flexible, thereby reduced actuating mechanism's damage probability, life is longer. And meanwhile, the telescopic end is arranged outside the valve body, so that the blocking of working media is reduced.

Drawings

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

Fig. 1 is a front view of an external stem three-way angle seat valve provided in an embodiment of the present invention;

FIG. 2 is a top view of the outer stem three-way angle seat valve shown in FIG. 1;

fig. 3 is a schematic structural diagram of another embodiment of the external stem three-way angle seat valve in the example.

Reference numerals:

600-a three-way valve body; 601-a first port; 602-a second port; 603-a third port; 604-a first position sensor; 605-a second position sensor; 606-a slit; 620-valve seat; 630-a flange; 640-a blind plate; 700-valve flap; 720-wing plate; 730-a soft seal; 800-a drive mechanism; 830-a telescoping end; 900-protective housing.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

As shown in fig. 1-2, the present embodiment provides an external stem three-way angle seat valve, which includes: the three-way valve body 600, the valve clack 700 and the driving mechanism 800; the three-way valve body 600 includes: a first port 601, a second port 602, and a third port 603; a valve seat 620 matched with the valve clack 700 is arranged in the first port 601; the valve clack 700 is movably arranged in the three-way valve body 600 in the directions close to and far away from the valve seat 620; the driving mechanism 800 is connected to the valve flap 700, and is configured to drive the valve flap 700 to move, so as to open and close the first port 601.

Preferably, the three-way valve body 600 is T-shaped as a whole, and the second port 602 and the third port 603 are arranged coaxially and oppositely; the first port 601 is arranged perpendicular to said second port 602 and third port 603. In this embodiment, the three-way valve body 600 is made of a cross-shaped tube, and one of the ports is blocked by using a flange 630 and a blind plate 640.

The embodiment further comprises a wing plate 720, and a slit 606 is arranged on the side wall of the three-way valve body 600 along the direction close to and far from the valve seat 620; the inner end of the wing 720 is fixedly connected to the valve flap 700, and the outer end of the wing 720 extends from the slit 606 and is connected to the driving mechanism 800. The driving mechanism 800 drives the valve flap 700 to move back and forth through the wing plate 720.

Further, a protective cover 900 is disposed outside the slit 606 for covering the slit 606 and part or all of the driving mechanism 800 from the outside. The driving mechanism 800 may be an electric, pneumatic or hydraulic telescopic mechanism, for example, the driving mechanism 800 is an electric pushing cylinder, an air cylinder or a hydraulic cylinder. The telescopic mechanism is arranged in the protective housing 900, and a telescopic end 830 of the telescopic mechanism is connected with the outer end of the wing plate 720; or, the main body of the telescopic mechanism is arranged outside the protective housing 900, and the telescopic end 830 of the telescopic mechanism extends into the protective housing 900 from the outside through a via hole on the protective housing 900 to be connected with the outer end of the wing plate 720. Wherein, a sealing structure is arranged between the via hole and the telescopic end 830 of the telescopic mechanism.

Wherein the valve flap 700 is a plunger-like piston; alternatively, the cross-sectional shape of the valve flap 700 is a U-shape (or front disk shape); the valve clack 700 is provided with a sealing working end face at one side of the valve seat 620; the valve seat 620 is provided with a sealing end face matched with the sealing working end face on one side of the valve flap 700. In the closed state, a metal-to-metal seal is provided between the valve flap 700 and the valve seat 620.

Preferably, referring to fig. 3, the cross section of the valve flap 700 is H-shaped, and the valve flap 700 is provided with a soft seal 730 on one side of the valve seat 620; a pressure plate 731 is fixed on the outer end face of the soft seal 730, and the outer diameter of the pressure plate 731 is smaller than the inner diameter of the valve seat 620. The soft sealing member 730 is a rubber member, a teflon plastic member, a ceramic fiber member, or the like.

The present embodiment further comprises a controller, a first position sensor 604 and a second position sensor 605, wherein the first position sensor 604 and the second position sensor 605 are respectively disposed in the protective enclosure 900 and at two ends of the travel of the wing plate 720; the controller is respectively connected with the first position sensor 604, the second position sensor 605 and the driving mechanism 800, and determines the position information of the valve clack 700 according to the feedback information of the first position sensor 604 and the second position sensor 605; the controller controls the reciprocation of the valve flap 700 by the driving mechanism 800.

The utility model provides an outer valve stem tee bend angle seat valve, actuating mechanism 800 flexible end 830 (like the valve rod) set up in valve body 600 outsidely to avoided working medium direct action such as pulse shock wave and pulse jet to serve at this flexible 830, thereby reduced actuating mechanism 800's damage probability, life is longer. Meanwhile, the telescopic end 830 is arranged outside the valve body 600, so that the blocking of working media is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An external stem three-way angle seat valve, comprising: the three-way valve body, the valve clack and the driving mechanism;

a valve seat matched with the valve clack is arranged in the first port;

2. The external valve stem three-way angle seat valve of claim 1, wherein the three-way valve body is generally Y-shaped, and the first port, the second port, and the third port are arranged crosswise in pairs.

3. The external stem three-way angle seat valve of claim 1, wherein the three-way valve body is generally T-shaped, and the second port and the third port are coaxially and oppositely disposed; the first port is arranged perpendicular to the second port and the third port.

4. The external stem three-way angle seat valve of claim 1, further comprising a wing, wherein a slit is formed in a sidewall of the three-way valve body in a direction toward and away from the valve seat; the inner side end of the wing plate is fixedly connected with the valve clack, and the outer side end of the wing plate extends out of the slit and is connected with the driving mechanism.

5. The external stem three-way angle seat valve of claim 4, wherein a protective shroud is provided externally to the slit for externally covering the slit and some or all of the drive mechanism.

6. The external stem three-way angle seat valve of claim 5, wherein the drive mechanism is an electric, pneumatic, or hydraulic telescoping mechanism.

7. The external valve stem three-way angle seat valve of claim 6, wherein the telescopic mechanism is entirely disposed inside the protective housing, and a telescopic end of the telescopic mechanism is connected with an outer end of the wing plate;

or the main body of the telescopic mechanism is arranged outside the protective housing, and the telescopic end of the telescopic mechanism extends into the protective housing from the outside through a via hole in the protective housing and is connected with the outer end of the wing plate.

8. The external stem three-way angle seat valve of claim 1, wherein the flap is plunger-shaped; or the cross section of the valve clack is U-shaped;

the valve clack is provided with a sealing working end face at one side of the valve seat; a sealing end face matched with the sealing working end face is arranged on one side of the valve clack of the valve seat;

9. The external stem three-way angle seat valve of claim 1, wherein the flap is provided with a soft seal on one side of the valve seat; and a pressure plate is fixed on the end surface of the outer side of the soft sealing element, and the outer diameter of the pressure plate is smaller than the inner diameter of the valve seat.

10. The external stem three-way angle seat valve of claim 9, wherein the soft seal is a rubber member, a polytetrafluoroethylene plastic member, or a ceramic fiber member.

11. The external valve stem three-way angle seat valve of claim 1, wherein the valve flap is provided with a frustum portion on one side of the valve seat, and the inner hole of the valve seat is in a bell mouth shape which is matched with the frustum portion in a sealing manner.

12. The external valve stem three-way angle seat valve of claim 5, further comprising a controller, a first position sensor and a second position sensor, the first and second position sensors being disposed within the protective housing and at either end of the travel of the wing, respectively; the controller is respectively connected with the first position sensor, the second position sensor and the driving mechanism, and determines the position information of the valve clack according to the feedback information of the first position sensor and the second position sensor; the controller controls the valve clack to reciprocate through the driving mechanism.

13. A spout connection structure with an external valve stem three-way angle seat valve as claimed in any one of claims 1 to 12, wherein the external valve stem three-way angle seat valve is provided as a communication node on a delivery pipe for soot blower working medium; the second port and the third port are used as an inlet and an outlet and are respectively communicated with the conveying pipelines at two sides; the first port is connected with the spout.