CN218152641U

CN218152641U - Safety valve for tail furnace steam drum for preventing misoperation

Info

Publication number: CN218152641U
Application number: CN202221715625.2U
Authority: CN
Inventors: 魏庆华
Original assignee: Feicheng Dongming Chemical Co ltd
Current assignee: Feicheng Dongming Chemical Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-12-27
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses a prevent relief valve for tail-furnace drum of maloperation, including valve body, disk seat and handle, the bottom of valve body is provided with the disk seat, the inside of valve body is provided with the valve clack, the top of valve clack is connected with the valve rod, spacing spring has been cup jointed to the one end that the valve rod runs through to stretch out the valve body, spacing spring's the outside is provided with the valve gap fixed with the valve body. This prevent relief valve for end furnace steam pocket of maloperation, it is rotatory through pressing down the handle, and outwards scratch and draw the knot to rotate the seat around, upwards promote the horizontal pole that the handle drove on the valve cap upwards and deflect again, thereby the valve clack that drives the valve rod bottom shifts up, guarantee that the relief valve realizes the pressure release protection, through tightening up the lug block on spring pulling buckle and the handle, thereby guarantee that this relief valve has the effect of preventing the maloperation, can hide rain protection to the position of louvre through the rain-proof cover of baffle cooperation, avoid the rainwater too much to cause the corrosion in entering into the valve gap.

Description

Safety valve for tail furnace steam pocket for preventing misoperation

Technical Field

The utility model relates to a relief valve technical field specifically is a relief valve for tail furnace steam pocket that prevents maloperation.

Background

The steam drum is the most important equipment in the boiler equipment and is a connection junction of three processes of heating, vaporizing and overheating of the boiler. The safety valve plays a safety protection role in the tail furnace steam drum, when the pressure of the tail furnace steam drum exceeds a specified value, the safety valve is opened, a part of gas in the tail furnace steam drum can be discharged into the atmosphere, the pressure in the tail furnace steam drum is not more than an allowable value, and therefore the tail furnace steam drum is guaranteed not to have accidents due to overhigh pressure. The relief valve of taking operating handle need carry out the manual control pressure release through operating handle when using, and along with the development of science and technology, the relief valve for the afterburner steam pocket has had the development of very big degree, and present relief valve for the afterburner steam pocket still has following problem nevertheless:

1. when in use, the safety valve with the operating handle is easy to be operated by mistake by people, thereby causing the pressure reduction caused by the exhaust in the steam drum of the tail furnace;

2. holes for heat dissipation are generally formed in two sides of a valve cover of a safety valve for a tail furnace steam pocket, rainwater easily enters the valve cover when the safety valve is used outdoors, and internal corrosion is easily caused after the safety valve is used for a long time;

therefore, improvements are made to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safety valve for a tail furnace steam pocket for preventing misoperation, which solves the problem that the safety valve with an operating handle in the background art is easy to be manually operated by mistake when in use, thereby leading to the reduction of pressure caused by the exhaust in the tail furnace steam pocket; the hole of heat dissipation usefulness is generally seted up to the valve gap both sides of relief valve for the tail-gas stove steam pocket, and when outdoor use, during the rainwater enters into the valve gap easily, uses the problem that causes inside corrosion easily for a long time.

In order to achieve the above purpose, the utility model provides a following technical scheme: a safety valve for a tail furnace steam pocket for preventing misoperation comprises a valve body, a valve seat and a handle, wherein the valve seat is arranged at the bottom of the valve body, a valve clack is arranged inside the valve body, the top end of the valve clack is connected with a valve rod, one end of the valve rod, which penetrates through and extends out of the valve body, is sleeved with a limiting spring, a valve cover fixed with the valve body is arranged on the outer side of the limiting spring, the top of the valve cover is connected with a valve cap, the middle of the valve cap is connected with a cross rod, the top end of the valve rod is in butt joint with the cross rod, and the handle is connected with the outer side of the valve cap;

the limiting mechanism is arranged on the outer side of the valve body and comprises a rotating seat, a retaining ring, a first butt joint column, a second butt joint column and a tightening spring, and a convex block is arranged at the bottom end of the handle.

Preferably, the rotating seat is fixed outside the valve body and is connected with the retaining ring.

Preferably, a first butt column is fixed on the inner side of the retaining ring, a second butt column is arranged above the outer wall of the valve body, which is close to the rotating seat, and a tightening spring is connected between the first butt column and the second butt column.

Preferably, heat dissipation holes are formed in two sides of the valve cover, a lantern ring is arranged on the outer edge, close to the heat dissipation holes, of the valve cover, and a groove is formed in the outer surface of the lantern ring.

Preferably, the outer side of the lantern ring is butted with a rain-proof sleeve, and the inner wall of the rain-proof sleeve is provided with a bulge.

Preferably, the protrusion is in butt joint with the groove, and a baffle is arranged on the upper surface inside the rain-proof sleeve.

Compared with the prior art, the beneficial effects of the utility model are that: this prevent relief valve for exhaust furnace steam pocket of maloperation, it is rotatory through pressing down the handle, and outwards dig the draw buckle and rotate around the seat of rotating, upwards promote the horizontal pole that the handle drove on the valve cap upwards and deflect again, thereby the valve clack that drives the valve rod bottom shifts up, guarantee that the relief valve realizes the pressure release protection, through tightening up the lug block on spring pulling buckle and the handle, thereby guarantee that this relief valve has the effect of preventing maloperation, can hide rain protection to the position of louvre through the rain-proof cover of baffle cooperation, avoid the rainwater to cause the corrosion in excessively entering into the valve gap.

1. According to the safety valve for the tail furnace steam pocket, the handle is pressed downwards to rotate, the pull buckle is pulled outwards to rotate around the rotating seat, the handle is pushed upwards to drive the cross rod on the valve cap to deflect upwards, so that the valve clack at the bottom end of the valve rod is driven to move upwards, the valve seat is communicated with the valve body, the tail furnace steam pocket can be guaranteed to realize pressure relief protection through the safety valve, the snap ring is pulled to be clamped with the bump through the tightening spring, and therefore the safety valve is guaranteed to have the effect of preventing misoperation;

2. this prevent relief valve for end furnace steam pocket of maloperation sets up the lantern ring in the louvre outside of valve gap both sides to with the protruding recess joint in the lantern ring outside of rain-proof cover through the inner wall, make rain-proof cover quick installation, can hide rain protection to the position of louvre through the rain-proof cover of baffle cooperation, avoid the rainwater too much to enter into and cause the corrosion in the valve gap.

Drawings

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

FIG. 2 is a schematic structural view of the cross section of the present invention;

FIG. 3 is a right side view of the cross-sectional structure of the present invention;

fig. 4 is a structural schematic diagram of a right-view cross section of the rain cover of the present invention;

fig. 5 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve flap; 4. a valve stem; 5. a limiting spring; 6. a valve cover; 7. a bonnet; 8. a cross bar; 9. a handle; 10. a limiting mechanism; 101. rotating the base; 102. a retaining ring; 103. a first docking post; 104. a second docking post; 105. tightening the spring; 11. a bump; 12. heat dissipation holes; 13. a collar; 14. a groove; 15. a rain cover; 16. a protrusion; 17. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments 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 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.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a prevent maloperation's relief valve for tail-furnace steam pocket, including valve body 1, disk seat 2 and handle 9, the bottom of valve body 1 is provided with disk seat 2, the inside of valve body 1 is provided with valve clack 3, the top of valve clack 3 is connected with valve rod 4, valve rod 4 runs through the one end that stretches out valve body 1 and has cup jointed spacing spring 5, spacing spring 5's the outside is provided with the valve gap 6 fixed with valve body 1, and the top of valve gap 6 is connected with valve cap 7, the middle part of valve cap 7 is connected with horizontal pole 8, the top and the 8 butt joints of horizontal pole 4, the outside of valve cap 7 is connected with handle 9, the outside of valve body 1 is provided with stop gear 10, and stop gear 10 is including rotating seat 101, buckle 102, first butt joint post 103, second butt joint post 104 and tighten up spring 105, the bottom of handle 9 is provided with lug 11.

The rotating seat 101 is fixed outside the valve body 1, and the rotating seat 101 is connected with the retaining ring 102; a first butt column 103 is fixed on the inner side of the retaining ring 102, a second butt column 104 is arranged on the outer wall of the valve body 1 above the rotating seat 101, a tightening spring 105 is connected between the first butt column 103 and the second butt column 104, the rotating seat 101 and the retaining ring 102 are in rotary connection, the retaining ring 102 and a convex block 11 on the handle 9 are in clamping connection, threads are arranged on the surfaces of the first butt column 103 and the second butt column 104, and two ends of the tightening spring 105 are in threaded connection with the first butt column 103 and the second butt column 104 respectively.

It is rotatory through pressing handle 9 downwards to outwards dig and draw buckle ring 102 rotatory around rotating seat 101, promote handle 9 upwards again and drive horizontal pole 8 on the valve cap 7 and upwards deflect, thereby drive the valve clack 3 of valve rod 4 bottom and move up, make disk seat 2 and valve body 1 be linked together, and then can guarantee that the tail-end boiler steam pocket realizes the pressure release protection through this relief valve, through tightening up spring 105 pulling buckle 102 and lug 11 block, thereby guarantee that this relief valve has the effect of preventing maloperation.

Heat dissipation holes 12 are formed in two sides of the valve cover 6, a lantern ring 13 is arranged on the outer edge, close to the heat dissipation holes 12, of the valve cover 6, and a groove 14 is formed in the outer surface of the lantern ring 13; a rain-proof sleeve 15 is butted on the outer side of the lantern ring 13, and a bulge 16 is arranged on the inner wall of the rain-proof sleeve 15; protruding 16 and recess 14 butt joint, the inside upper surface of rain-proof cover 15 is provided with baffle 17, and lantern ring 13 and rain-proof cover 15 are plug-in connection, and rain-proof cover 15 constitutes the block structure through protruding 16 and recess 14 in the lantern ring 13 outside.

Set up the lantern ring 13 in the louvre 12 outside of valve gap 6 both sides to with rain-proof cover 15 through the protruding 16 of inner wall and the recess 14 joint in the lantern ring 13 outside, make rain-proof cover 15 install fast, through the rain-proof cover 15 of baffle 17 cooperation can hide rain protection to the position of louvre 12, avoid the rainwater too much to cause the corrosion in entering into valve gap 6.

In summary, the valve seat 2 at the bottom of the valve body 1 is installed in butt joint with the flange on the steam drum of the tail furnace, when the pressure gauge on the steam drum of the tail furnace reaches a specified value, the handle 9 is pressed downwards to rotate, the outward pulling buckle ring 102 is pulled outwards to rotate around the rotating seat 101, the handle 9 is pushed upwards to drive the cross rod 8 on the valve cap 7 to deflect upwards, so as to drive the valve flap 3 at the bottom end of the valve rod 4 to move upwards, the valve seat 2 is communicated with the valve body 1, and therefore the steam drum of the tail furnace can realize pressure relief protection through the safety valve, heat dissipation and temperature reduction are realized through arranging the heat dissipation holes 12 on two sides of the valve cover 6, and the positions of the heat dissipation holes 12 can be protected from rain through matching the baffle 17 with the rain cover 15.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a prevent relief valve for tail-furnace steam pocket of maloperation, includes valve body (1), disk seat (2) and handle (9), its characterized in that:

the valve comprises a valve body (1), a valve seat (2) is arranged at the bottom of the valve body (1), a valve clack (3) is arranged inside the valve body (1), a valve rod (4) is connected to the top end of the valve clack (3), a limiting spring (5) is sleeved at one end, extending out of the valve body (1), of the valve rod (4), a valve cover (6) fixed with the valve body (1) is arranged on the outer side of the limiting spring (5), a valve cap (7) is connected to the top of the valve cover (6), a cross rod (8) is connected to the middle of the valve cap (7), the top end of the valve rod (4) is in butt joint with the cross rod (8), and a handle (9) is connected to the outer side of the valve cap (7);

the limiting mechanism (10) is arranged on the outer side of the valve body (1), the limiting mechanism (10) comprises a rotating seat (101), a retaining ring (102), a first butt column (103), a second butt column (104) and a tightening spring (105), and a convex block (11) is arranged at the bottom end of the handle (9).

2. The safety valve for an end furnace drum for preventing misoperation according to claim 1, characterized in that: the rotating seat (101) is fixed outside the valve body (1), and the rotating seat (101) is connected with the retaining ring (102).

3. The safety valve for an exhaust gas boiler drum for preventing a malfunction according to claim 2, wherein: a first butt column (103) is fixed on the inner side of the retaining ring (102), and a second butt column (104) is arranged above the outer wall of the valve body (1) close to the rotating seat (101).

4. The safety valve for an exhaust gas boiler drum for preventing a malfunction according to claim 3, wherein: a tightening spring (105) is connected between the first docking post (103) and the second docking post (104).

5. The safety valve for an end furnace drum for preventing misoperation according to claim 1, characterized in that: heat dissipation hole (12) have been seted up to the both sides of valve gap (6), and valve gap (6) are close to the outward flange of heat dissipation hole (12) and are provided with lantern ring (13), recess (14) have been seted up to the surface of lantern ring (13).

6. The safety valve for an end furnace drum for preventing misoperation according to claim 5, characterized in that: the outer side of the lantern ring (13) is butted with a rainproof sleeve (15), and a bulge (16) is arranged on the inner wall of the rainproof sleeve (15).

7. The safety valve for an exhaust gas boiler drum for preventing misoperation according to claim 6, wherein: the protrusion (16) is in butt joint with the groove (14), and a baffle (17) is arranged on the upper surface inside the rain-proof sleeve (15).