CN219432753U - Explosion-proof protection device for pipeline - Google Patents

Abstract

The utility model relates to the technical field of pipeline explosion prevention and discloses a pipeline explosion prevention protection device, which comprises a pipeline main body, wherein a cooling water tank is sleeved on the outer wall of the pipeline main body in a sliding way, a first outlet flange is arranged on the pipeline main body, the first outlet flange is communicated with a valve body, an inlet flange and a second outlet flange are respectively arranged at two ends of the valve body, the inlet flange is connected with the first outlet flange, the second outlet flange is connected with dust removing equipment, and a plurality of supporting frames are respectively arranged on the cooling water tank and the valve body.

Description

Explosion-proof protection device for pipeline

Technical Field

The utility model relates to the technical field of pipeline explosion prevention, in particular to an explosion-proof protection device for a pipeline.

Background

The dust explosion refers to dust cloud formed by mixing combustible dust with air in a limited space, the formed dust air mixture burns rapidly under the action of an ignition source, and causes chemical reaction with rapid temperature and pressure rise, the potential danger of the dust explosion is greatly increased along with the development of modern industry, and the problem of dust explosion prevention is also gaining more importance to the whole society.

In actual production, an explosion-proof device is usually arranged between a pipeline and dust removing equipment, and the principle of the explosion-proof device is that a mechanical valve plate structure is utilized, forward airflow is opened by self suction, reverse airflow is closed immediately, and the explosion-proof device is used for isolating secondary accidents caused by reverse airflow generated when the dust removing equipment explodes. However, due to the narrow space in the pipeline, a certain amount of dust can be accumulated in the pipeline in the dust conveying process, and if the deposited dust has too high temperature, the deposited dust is easy to explode if spontaneous combustion occurs; when the dust removing equipment explodes, if the induced draft fan is not closed in time, the induced draft valve is continuously sucked and opened again, and secondary explosion is easy to occur.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide an explosion-proof protection device for a pipeline.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an explosion-proof protection device of pipeline, includes the pipeline main part, the cooling water tank has been cup jointed in the slip on the outer wall of pipeline main part, be provided with first export flange in the pipeline main part, first export flange intercommunication has the valve body, import flange and second export flange are installed respectively at the valve body both ends, import flange and first export flange coupling, the second export flange is connected with dust collecting equipment, all install a plurality of support frames on cooling water tank and the valve body.

The utility model is further provided with: the cooling water tank comprises a cooling box body, wherein the cooling box body is hollow, the inner wall of the cooling box body is attached to the outer wall of the pipeline main body, a water inlet pipe and a water outlet pipe are arranged on the cooling box body, an audible-visual alarm is arranged on the cooling box body, the audible-visual alarm is connected with a heat probe, and the heat probe is arranged in the cooling box body.

The utility model is further provided with: the valve body comprises a valve shell, one end of the inlet flange, which deviates from the pipeline main body, is connected with an air inlet pipe, the air inlet pipe stretches into the inner cavity of the valve shell, one side end surface of the air inlet pipe, which deviates from the inlet flange, is at a certain angle with the inlet flange, one side of the valve body, which deviates from the supporting frame, is provided with an opening, a valve cover is arranged on the opening of the valve body in a sealing manner, and a handle is arranged on the valve cover.

The utility model is further provided with: the valve is characterized in that bearings are symmetrically arranged on two sides of the valve housing, two bearings are provided with rotating shafts together, two ends of each rotating shaft are rotatably connected with the side wall of the valve housing through the bearings, a valve clack is arranged on each rotating shaft, and one end of each rotating shaft extends out of the valve housing and is connected with a self-locking device.

The utility model is further provided with: install gravity piece and limiting plate on the valve clack, gravity piece and limiting plate set up between axis of rotation and import flange, the valve clack sets up to can be with the terminal surface of intake pipe to laminating, be provided with the sealing washer on the laminating face of valve clack and intake pipe, the valve clack deviates from one side surface symmetry of sealing washer and is provided with the backup pad perpendicularly, two the drainage board that is connected with in the backup pad jointly, valve clack and one side that the drainage board dorsad is from the sealing washer scribbled fire-resistant coating.

The utility model is further provided with: the self-locking device comprises ratchet teeth, the ratchet teeth are fixedly arranged on a rotating shaft, one end of each ratchet tooth, deviating from the valve casing, is connected with a manual lock, a fixed shaft is arranged on the valve casing, a spring is sleeved on the fixed shaft, one end of the spring is fixed on the valve casing, a stop piece is arranged at the other end of the spring, the stop piece is in sliding connection with the fixed shaft, and the stop piece is arranged to be capable of being clamped with the ratchet teeth.

The utility model has the advantages that:

1. when the dust removal equipment is used for treating dust, the water inlet pipe is opened to inject a certain amount of cooling liquid into the cooling box body, dust gas passing through the pipeline body is cooled, when the heat probe detects that the temperature of the liquid in the cooling water tank is too high, the audible and visual alarm gives an alarm, and a worker opens the water outlet pipe to discharge the overheat liquid and injects new cooling liquid through the water inlet pipe, so that the temperature in the pipeline body is effectively reduced, and the condition that spontaneous combustion of dust in the pipeline due to the too high temperature is avoided;

2. during normal operation, dust gas enters the pipeline main body, enters the valve body after being cooled by the cooling water tank, and the valve clack in the cavity of the valve body is in a normally open state under the control of self gravity of the gravity block to control the valve clack during normal operation and is not influenced by an induced draft fan, and the opening angle of the valve clack is controlled by propping the limiting plate against the outer wall of the air inlet pipe, so that overlarge opening amplitude of the valve clack and excessive dust gas throughput are avoided

3. When the dust removing device explodes, the flow guiding plate gathers and guides shock waves generated by the explosion, so that the valve clack is closed under the action of the shock waves, the sealing ring and the inner side end face of the air inlet pipe form a sealing structure, at the moment, the stop piece of the self-locking device prevents the valve clack from being opened again under the influence of an induced draft fan or negative pressure, and the shock waves and flames of the explosion are prevented from returning to the inside of the pipeline main body or being transmitted to other connected equipment to generate secondary explosion, so that the safety of the pipeline main body, upstream personnel and equipment is ensured;

4. when the potential safety hazard is eliminated and the work needs to be restarted, a worker presses down the stop piece to enable the stop piece to leave the ratchet teeth, rotates the manual lock to enable the valve clack to be in a normally open state, and releases the stop piece to enable the stop piece to be in a working state.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of a cooling water tank;

FIG. 3 is an enlarged schematic view of FIG. 1 at A;

FIG. 4 is a cross-sectional view of the valve flap in an operational state;

fig. 5 is a cross-sectional view of a valve flap in a closed state.

In the figure: 1. a pipe body; 101. a first outlet flange; 2. a cooling water tank; 201. a cooling box body; 202. a water inlet pipe; 203. a water outlet pipe; 204. an audible and visual alarm; 205. a thermal probe; 3. a valve body; 301. a valve housing; 302. an inlet flange; 303. a second outlet flange; 304. an air inlet pipe; 305. a bearing; 4. a valve cover; 401. a handle; 5. a valve flap; 501. a rotating shaft; 502. a gravity block; 503. a limiting plate; 504. a seal ring; 505. a drainage plate; 506. a refractory coating; 507. a support plate; 6. a self-locking device; 601. ratchet teeth; 602. a manual lock; 603. a stopper; 604. a fixed shaft; 605. a spring; 7. and (5) supporting frames.

Detailed Description

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

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, the terms "upper" and "lower" are used generally with respect to the directions shown in the drawings, or with respect to the vertical, vertical or gravitational directions; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present utility model.

Referring to fig. 1-5, the present utility model provides the following technical solutions:

the utility model provides an explosion-proof protection device of pipeline, including pipeline main part 1, the cooling water tank 2 has been cup jointed in the slip on the outer wall of pipeline main part 1, cooling water tank 2 includes cooling box 201, cooling box 201 is the cavity setting, its inside injectable cooling liquid cools down pipeline main part 1, install inlet tube 202 and outlet pipe 203 on the cooling box 201, audible-visual annunciator 204 is installed to cooling box 201 upper end, audible-visual annunciator 204 is connected with hot probe 205, hot probe 205 sets up in the cavity of cooling box 201, when the temperature in the cooling box 201 is detected to hot probe 205 reaches the upper limit, audible-visual annunciator 204 sends out the alarm sound, the outlet pipe 203 is opened with the discharge of overheated liquid in the cooling water tank 2 to pour into new cooling liquid into through inlet tube 202, thereby effectively reduce the temperature in the pipeline main part 1, avoid taking place the condition of spontaneous combustion because of the inside dust of the too high temperature.

The pipeline main part 1 one end is provided with first export flange 101, first export flange 101 intercommunication has valve body 3, valve body 3 includes valve casing 301, valve casing 301 both ends are fixed respectively and are set up import flange 302 and second export flange 303, import flange 302 is connected with first export flange 101, second export flange 303 is connected with dust collecting equipment, one side that valve body 3 deviates from support frame 7 is provided with the opening, sealing installation valve gap 4 on the opening of valve body 3, install handle 401 on valve gap 4, the condition of each part in the inspection valve body 3 of being convenient for, in time clear up and maintain.

The one end that import flange 302 deviates from first export flange 101 is connected with intake pipe 304, intake pipe 304 stretches into the inner chamber of valve casing 301, intake pipe 304 deviates from the one side terminal surface of import flange 302 and is certain angle, the inner chamber of valve casing 301 is provided with valve clack 5, valve clack 5 sets up to can be with the terminal surface of intake pipe 304 to laminating, be provided with sealing washer 504 on valve clack 5 and the intake pipe 304 faying face, when valve clack 5 is closed, sealing washer 504 forms seal structure with the inboard terminal surface of intake pipe 304, valve clack 5 deviates from the perpendicular symmetry of one side surface of sealing washer 504 and is provided with backup pad 507, backup pad 507 plays the effect of reinforcing valve clack 5, be connected with drainage plate 505 jointly on two backup pads 507, drainage plate 505 upper end sets up to the arc, the area of explosion shock wave has been increased, simultaneously played the effect of gathering drainage, valve clack 5 and drainage plate 505 deviate from one side surface of sealing washer 504 and scribble refractory coating 506, when the explosion, 5 receives the shock wave effect and closes, can effectively block the shock wave of explosion and flame back to produce secondary explosion in the pipeline main part 1, the safety of personnel and the equipment of upstream has been guaranteed.

The gravity block 502 and the limiting plate 503 are installed on the top end of the valve clack 5, the gravity block 502 controls the valve clack 5 to be in a normally open state under the control of self gravity, the valve clack is not influenced by an induced draft fan, the limiting plate 503 and the outer wall of the air inlet pipe 304 are in conflict with each other to control the opening angle of the valve clack 5, the valve clack 5 is prevented from being opened too large in amplitude, and the dust gas throughput is excessive.

The two sides of the valve casing 301 are symmetrically provided with bearings 305, two bearings 305 are jointly provided with a rotating shaft 501, two ends of the rotating shaft 501 are rotatably connected with the side wall of the valve casing 301 through the bearings 305, one end of the rotating shaft 501 extends out of the valve casing 301 and is connected with a self-locking device 6, the self-locking device 6 comprises ratchet teeth 601, the ratchet teeth 601 are fixedly arranged on the rotating shaft 501, one end of the ratchet teeth 601, which is away from the valve casing 301, is connected with a manual lock 602, a fixed shaft 604 is arranged on the valve casing 301, a spring 605 is sleeved on the fixed shaft 604, one end of the spring 605 is fixed on the valve casing 301, the other end of the spring 605 is provided with a stop member 603, the stop member 603 is slidably connected with the fixed shaft 604, the stop member 603 is arranged to be clamped with the ratchet teeth 601, when a shock wave is encountered, the ratchet teeth 601 rotate along with the valve clack 5, and the stop member 603 locks the ratchet teeth 601 to prevent the valve clack 5 from being opened again under the influence of a draught fan or negative pressure; when the operator needs to restart the work after removing the potential safety hazard, he presses the stop member 603 to separate the stop member 603 from the ratchet teeth 601, rotates the manual lock 602 to restore the ratchet teeth 601 and the valve clack 5 to the normally open state, and resets the stop member 603 under the action of the spring 605, namely, restores the work state.

A plurality of support frames 7 are arranged on the cooling water tank 2 and the valve body 3, and a plurality of mounting holes are formed in the support frames 7, so that the explosion-proof protection device is conveniently and fixedly mounted, and the bearing of the pipeline main body 1 is lightened.

In particular

When dust is treated by using dust removing equipment, a water inlet pipe 202 is opened to inject a certain amount of cooling liquid into a cooling box 201, dust gas passing through the inside of a pipeline main body 1 is cooled, when a heat probe 205 detects that the temperature of the liquid in a cooling water tank 2 is too high, an audible and visual alarm 204 gives an alarm, a worker opens a water outlet pipe 203 to discharge overheated liquid, and injects new cooling liquid through the water inlet pipe 202, so that the temperature in the pipeline main body 1 is effectively reduced, and the condition that the dust in the pipeline is spontaneously burned due to the too high temperature is avoided;

during normal operation, dust gas enters the pipeline main body 1, is cooled by the cooling water tank 2 and then enters the valve body 3, the valve clack 5 in the cavity of the valve body 3 is controlled by the gravity of the gravity block 502 to control the valve clack 5 to be in a normally open state without being influenced by an induced draft fan during normal operation, and the opening angle of the valve clack 5 is controlled by the interference of the limiting plate 503 and the outer wall of the air inlet pipe 304, so that excessive opening amplitude of the valve clack 5 and excessive dust gas throughput are avoided;

when the dust removing device explodes, the flow guiding plate 505 gathers and guides the shock wave generated by the explosion, so that the valve clack 5 is closed under the action of the shock wave, the sealing ring 504 and the inner side end surface of the air inlet pipe 304 form a sealing structure, at the moment, the stop piece 603 of the self-locking device 6 prevents the valve clack 5 from being opened again under the influence of induced draft fan or negative pressure, so as to prevent the shock wave and flame of the explosion from returning into the pipeline main body 1 or being transmitted to other connected equipment to generate secondary explosion, and ensure the safety of the pipeline main body 1 and upstream personnel and equipment;

when the safety hazard is eliminated and the work needs to be restarted, the worker presses the stop member 603 to separate the stop member 603 from the ratchet teeth 601, rotates the manual lock 602 to enable the valve clack 5 to be in a normally open state, and simultaneously releases the stop member 603, namely the work state is restored.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides an explosion-proof protection device of pipeline, includes pipeline main part (1), its characterized in that: the utility model discloses a cooling water tank, including pipeline main part (1), pipeline main part (1) and valve body (3), cooling water tank (2) has been cup jointed in the slip on the outer wall of pipeline main part (1), be provided with first export flange (101) on pipeline main part (1), first export flange (101) intercommunication has valve body (3), import flange (302) and second export flange (303) are installed respectively at valve body (3) both ends, import flange (302) are connected with first export flange (101), second export flange (303) are connected with dust collecting equipment, all install a plurality of support frames (7) on cooling water tank (2) and valve body (3).

2. A pipeline explosion protection device according to claim 1, wherein: the cooling water tank (2) comprises a cooling box body (201), wherein the cooling box body (201) is in a hollow arrangement, the inner wall of the cooling box body (201) is attached to the outer wall of the pipeline main body (1), a water inlet pipe (202) and a water outlet pipe (203) are arranged on the cooling box body (201), an audible-visual annunciator (204) is arranged on the cooling box body (201), the audible-visual annunciator (204) is connected with a thermal probe (205), and the thermal probe (205) is arranged in a cavity of the cooling box body (201).

3. A pipeline explosion protection device according to claim 2, wherein: the valve body (3) comprises a valve shell (301), one end of an inlet flange (302) deviating from a pipeline main body (1) is connected with an air inlet pipe (304), the air inlet pipe (304) stretches into an inner cavity of the valve shell (301), one side end face of the air inlet pipe (304) deviating from the inlet flange (302) is at a certain angle with the inlet flange (302), one side of the valve body (3) deviating from a supporting frame (7) is provided with an opening, a valve cover (4) is mounted on the opening of the valve body (3) in a sealing mode, and a handle (401) is mounted on the valve cover (4).

4. A pipeline explosion protection device according to claim 3, wherein: bearing (305) are installed to both sides symmetry of valve casing (301), two install axis of rotation (501) jointly on bearing (305), the both ends of axis of rotation (501) are connected through bearing (305) and the lateral wall rotation of valve casing (301), install valve clack (5) on axis of rotation (501), valve casing (301) are stretched out to axis of rotation (501) one end to be connected with self-locking device (6).

5. The explosion protection device for a pipeline according to claim 4, wherein: install gravity piece (502) and limiting plate (503) on valve clack (5), gravity piece (502) and limiting plate (503) set up between axis of rotation (501) and inlet flange (302), valve clack (5) set up to can be with the terminal surface laminating of intake pipe (304), be provided with sealing washer (504) on the faying surface of valve clack (5) and intake pipe (304), valve clack (5) deviate from one side surface symmetry of sealing washer (504) and are provided with backup pad (507) perpendicularly, two be connected with drainage plate (505) jointly on backup pad (507), valve clack (5) and drainage plate (505) deviate from one side of sealing washer (504) and scribble refractory coating (506).

6. The explosion protection device for a pipeline according to claim 5, wherein: the self-locking device (6) comprises ratchet teeth (601), the ratchet teeth (601) are fixedly arranged on a rotating shaft (501), one end, deviating from a valve casing (301), of the ratchet teeth (601) is connected with a manual lock (602), a fixed shaft (604) is arranged on the valve casing (301), a spring (605) is sleeved on the fixed shaft (604), one end of the spring (605) is fixed on the valve casing (301), a stop piece (603) is arranged at the other end of the spring (605), the stop piece (603) is in sliding connection with the fixed shaft (604), and the stop piece (603) can be clamped with the ratchet teeth (601).