CN217033160U - Coal dust and smoke sampling anti-blocking device - Google Patents

Abstract

The utility model provides a coal dust and smoke sampling anti-blocking device, which comprises: the sampling pipe is arranged in a hearth or a flue of the boiler and is used for sampling coal dust or smoke; vibrating motor, vibrating motor provide the mounting plate and fix on the outer wall of sampling tube, can drive the sampling tube vibration, through setting up vibrating motor's on-time and operating time, can vibrate the sampling tube at every interval to shake the dust on the sampling tube inner wall, prevent its jam.

Description

Coal dust and smoke sampling anti-blocking device

Technical Field

The utility model relates to the technical field of coal dust and flue gas sampling of thermal power plants, in particular to a coal dust and flue gas sampling anti-blocking device.

Background

The sampler (generally made of carbon steel and stainless steel) works in sampling ports of an air duct, a flue, a hearth and the like of a boiler, and the pipeline contains certain dust, so that the blockage often occurs, and the blockage needs to be blown off by a blower or other air sources, so that the labor intensity is high.

The existing anti-blocking wind pressure sampler is manufactured according to the principle of a cyclone separator, and can measure a wind-powder mixture with high viscosity, low fluidity and strong corrosivity in a short time without blocking in the wind pressure and differential pressure measurement of a flue gas and powder (coal powder) conveying system and a hearth. However, when the flue gas humidity is high, the dust particles are large and the sampling device is used for a long period, materials are stuck on the wall of a sampling pipe, so that the blockage phenomenon is easy to occur, and the normal work under the severe environment needs to be ensured. And certain measuring points have a protection and regulation effect on important auxiliary machines in the system operation, once blockage occurs, the auxiliary machine output is increased, the combustion of the whole boiler is unstable, and the shutdown risk is brought.

In view of the reasons, the anti-blocking wind pressure sampler is optimized on the existing anti-blocking wind pressure sampler, so that the risk of blocking is avoided, and the operation risk is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coal dust and smoke sampling anti-blocking device which can prevent a sampling pipe from being blocked due to dust particles or smoke humidity and the like in the coal dust or smoke sampling process.

The utility model provides a coal dust and smoke sampling anti-blocking device, which comprises:

the sampling tube is arranged in a hearth or a flue of the boiler and is used for sampling coal powder or smoke;

and the vibration mechanism is fixed on the outer wall of the sampling tube and is used for driving the sampling tube to vibrate.

Preferably, the vibration mechanism is a vibration motor.

Preferably, the base of the vibration motor is detachably connected with the outer wall of the sampling tube.

Preferably, the base of the vibration motor is detachably connected with the outer wall of the sampling tube through at least three connecting bolts.

Preferably, the outside of sampling tube is provided with mounting plate, mounting plate includes arc and connecting rib plate, the arc with the laminating of the outer wall looks adaptation of sampling tube, connecting rib plate by stretch out in the both sides of arc, connecting rib plate's bight is provided with the mounting hole respectively, through the mounting hole with connecting bolt adaptation installation makes mounting plate with vibrating motor's base can be dismantled and be connected.

Preferably, the vibration motor is an ac single-phase vibration motor.

Preferably, the coil of the vibration motor is electrically connected with an external power supply through a double-delay control circuit.

Preferably, the dual-delay control circuit includes a main circuit, and a first branch circuit and a second branch circuit connected in parallel, the main circuit is provided with a control switch, the first branch circuit is provided with a first delay relay, and the second branch circuit is provided with a second delay relay.

Preferably, a contactor is further arranged on the second branch.

Preferably, before the control switch is closed, the first delay relay is in a normally closed state, and the second delay relay is in a normally open state.

According to the technical scheme, the vibration mechanism is arranged on the outer side of the sampling pipe, and the vibration mechanism is controlled to vibrate after a certain time interval, so that dust and the like attached to the wall of the sampling pipe are vibrated and fall off, the sampling pipe is guaranteed to be smooth, the blockage of the sampling pipe is avoided, and the risk caused by inaccurate measuring points 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 used in the description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a sampling anti-blocking device according to the present invention;

fig. 2 is a schematic circuit diagram of a dual delay control circuit according to the present invention.

Description of the reference numerals:

1: a sampling tube; 2: a vibration motor; 3: mounting a bottom plate; 31: an arc-shaped plate; 32: connecting the rib plates; 33: mounting holes; 4: bolt holes; 5: a dual delay control circuit; 51: a main road; 52: a first branch; 53: a second branch; 54: a control switch; 55: a first time delay relay; 56: a second time delay relay; 57: a contactor is provided.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; 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 meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

As shown in figure 1, the utility model provides a coal dust and flue gas sampling anti-blocking device which comprises a sampling tube 1, wherein the sampling tube 1 is generally arranged in a hearth or a flue of a power plant boiler system and is used for sampling input coal dust or output flue gas, a vibration mechanism is arranged outside the sampling tube 1 and is fixed on the outer wall of the sampling tube 1, vibration is transmitted to the sampling tube 1 through the vibration mechanism, and dust on the inner wall of the sampling tube 1 can fall off through vibration.

Further, the vibration mechanism adopts a vibration motor 2, and the vibration motor 2 is an alternating current single-phase vibration motor. Vibrating motor 2's outside is equipped with mounting plate 3 rather than a body coupling, mounting plate 3 includes arc 31 and connection floor 32, arc 31 laminates with sampling tube 1's outline looks adaptation, and pass through welding mode body coupling with sampling tube 1 outline, connection floor 32 is stretched out by the both sides of arc 31, each minute of connection floor 32 is provided with mounting hole 33 respectively, vibrating motor 2's base four corners is equipped with bolt hole 4 with mounting hole 33 adaptation, at least three connecting bolt passes mounting hole 33 and the 4 adaptation installations of bolt hole 4 that correspond, thereby make vibrating motor 2's base and mounting plate 3 can dismantle and be connected.

The coil of the vibration motor 2 is electrically connected with an external power supply through the double-delay control circuit 5, so that the starting time and the working time of the vibration motor 2 are conveniently controlled.

As shown in fig. 2, the dual delay control circuit 5 includes a main circuit 51, and a first branch circuit 52 and a second branch circuit 53 connected in parallel, the main circuit 51 is provided with a control switch 54, the first branch circuit 52 is provided with a first delay relay 55, the second branch circuit 52 is provided with a second delay relay 56, and the second branch circuit 52 is further provided with a contactor 57. Before the control switch 54 is closed, the first delay relay 55 is in a normally closed state, and the second delay relay 56 is in a normally open state. After the control switch 54 is closed, the two delay relays are powered on, and the time of the two delay relays is set, if the first delay relay 55 is set to be 12 hours, the time of the second delay relay is 5 minutes; after the second time delay relay arrives 12h, normally open, the normally closed state upset, control vibrating motor 2 gets electric, and after 5min of second time delay relay, normally open, the normally closed state upset once more, control vibrating motor 2 loses electric. Through the time to first time delay relay 55 and second time delay relay 56, steerable vibrating motor 2 uses a period of back at sampling tube 1, vibrates a certain time, makes the dust on the inner wall of sampling tube 1 drop, avoids sampling tube 1 to block up.

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; while the utility model has been described in detail and with reference to the foregoing embodiments, it will 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; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a buggy and flue gas sample prevent stifled device which characterized in that includes:

the sampling tube is arranged in a hearth or a flue of the boiler and is used for sampling coal powder or smoke;

and the vibration mechanism is fixed on the outer wall of the sampling tube and is used for driving the sampling tube to vibrate.

2. The coal dust and smoke sampling anti-blocking device according to claim 1, wherein the vibration mechanism is a vibration motor.

3. The pulverized coal and flue gas sampling anti-blocking device according to claim 2, wherein the base of the vibration motor is detachably connected with the outer wall of the sampling tube.

4. The coal dust and smoke sampling anti-blocking device according to claim 3, wherein the base of the vibration motor is detachably connected with the outer wall of the sampling tube through at least three connecting bolts.

5. The pulverized coal and flue gas sampling anti-blocking device according to claim 4, wherein a mounting bottom plate is arranged outside the sampling tube, the mounting bottom plate comprises an arc-shaped plate and a connecting rib plate, the arc-shaped plate is matched and attached to the outer wall of the sampling tube, the connecting rib plate extends out of two sides of the arc-shaped plate, mounting holes are respectively formed in corners of the connecting rib plate, and the mounting holes are matched and mounted with the connecting bolts, so that the mounting bottom plate is detachably connected with the base of the vibration motor.

6. The pulverized coal and flue gas sampling anti-blocking device according to any one of claims 2-5, wherein the vibration motor is an AC single-phase vibration motor.

7. The pulverized coal and flue gas sampling anti-blocking device according to claim 2, wherein a coil of the vibration motor is electrically connected with an external power supply through a double-delay control circuit.

8. The coal dust and smoke sampling anti-blocking device according to claim 7, wherein the double delay control circuit comprises a main circuit and a first branch circuit and a second branch circuit which are connected in parallel, a control switch is arranged on the main circuit, a first delay relay is arranged on the first branch circuit, and a second delay relay is arranged on the second branch circuit.

9. The coal dust and smoke sampling anti-blocking device according to claim 8, wherein a contactor is further arranged on the second branch.

10. The coal dust and smoke sampling anti-blocking device according to claim 8, wherein before the control switch is closed, the first delay relay is in a normally closed state, and the second delay relay is in a normally open state.

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