CN212339294U - Safety boiler soot blower - Google Patents

Abstract

The utility model discloses a safe boiler soot blower, which comprises a soot blower body, a blow pipe arranged on the soot blower body, one or more nozzles arranged at the front part of the blow pipe, and a stroke driving mechanism for driving the soot blower body to advance or retreat, and a control device, also including a stroke monitoring part for monitoring the advancing position of the soot blower body, the stroke monitoring part is connected with the control device, the control device receives the signal of the stroke monitoring part and judges whether the stroke of the soot blower body and the blow pipe on the soot blower body are abnormal, if the control device judges that the stroke of the soot blower body and the blow pipe on the soot blower body are abnormal, the control device gives an alarm and/or controls the stroke drive mechanism to withdraw the sootblower body, thereby avoiding the lance tube from staying at a certain position in the boiler for a long time, therefore, the problems that the water-cooled wall of the boiler is damaged or the boiler cannot be withdrawn due to the pipe bending of the blowing pipe and the like can be effectively prevented.

Description

Safety boiler soot blower

Technical Field

The utility model relates to a heat exchanger auxiliary assembly technical field especially relates to a safe boiler soot blower.

Background

The heat receiving surface of the boiler often accumulates soot, etc., and if the soot is not cleaned in time, the operation efficiency of the boiler can be greatly reduced, so that a soot blower needs to be introduced to blow away the soot. The existing boiler soot blower is often only set to monitor in place, such as in-place and back-to-place, and the monitoring of the whole process is lacked. When a blowing pipe of a soot blower goes deep into a hearth of a boiler, the blowing pipe possibly has the phenomena of blocking, slow walking and the like due to self reasons or boiler reasons, so that the blowing pipe stays at a certain position for a long time, and the water wall of the boiler is possibly damaged and even the water wall is blown out seriously; and if the blowpipe stays in the boiler for a long time and is baked in the boiler, the blowpipe may be bent and deformed, and is difficult to be withdrawn from the boiler, and the maintenance cost is extremely high. However, the blowpipe of some soot blowers is a rotatable blowpipe, and if the rotatable blowpipe rotates abnormally, the above-mentioned problems of water wall damage, blowpipe bending and the like may occur even if a certain position is purged for a long time.

SUMMERY OF THE UTILITY MODEL

Not enough more than to, the utility model provides a safe boiler soot blower can monitor the soot blower at the in-process of advancing, and whether in time the monitoring soot blower goes wrong and send out the police dispatch newspaper and/or let the soot blower withdraw when going wrong.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a safe boiler soot blower comprises a soot blower body, a blowing pipe arranged on the soot blower body, one or more nozzles arranged in the front of the blowing pipe, a stroke driving mechanism for driving the soot blower body to advance or retreat, a control device and a stroke monitoring part for monitoring the advancing position of the soot blower body, wherein the stroke monitoring part is connected with the control device, the control device receives signals of the stroke monitoring part and judges whether the stroke of the soot blower body and the blowing pipe on the soot blower body is abnormal, and if the control device judges that the stroke of the soot blower body and the blowing pipe on the soot blower body is abnormal, the control device gives an alarm and/or controls the stroke driving mechanism to enable the soot blower body to withdraw.

Further, the blowing pipe is rotatably arranged on the soot blower body, a rotation monitoring part for monitoring the rotation of the blowing pipe is arranged on the soot blower body, the rotation monitoring part is connected with the control device, the control device receives a signal of the rotation monitoring part and judges whether the rotation of the blowing pipe is abnormal, and if the control device judges that the rotation of the blowing pipe is abnormal, the control device gives an alarm and/or controls the stroke driving mechanism to withdraw the soot blower body.

Further, the stroke monitoring part is a gear sensor or an encoder or a pull-wire type stroke sensor.

Further, the stroke driving mechanism comprises a rack fixedly installed, a stroke motor installed on the soot blower body and a first gear driven to rotate by the stroke motor, the first gear is meshed with the rack, and the stroke motor is connected with the control device and is controlled by the control device; the stroke monitoring part is a gear sensor and is fixedly arranged on the soot blower body, and the stroke monitoring part is aligned with the gear teeth and the tooth groove part of the rack.

Further, the rotation monitoring part is a gear sensor or an encoder.

Furthermore, a rotation driving mechanism for driving the blow pipe to rotate is arranged on the soot blower body, the rotation driving mechanism comprises a chain, a rotation motor fixedly installed on the soot blower body and driving the chain to drive, and a second gear fixedly installed on the periphery of the blow pipe in a fixed mode, the second gear is meshed with the chain, and the rotation motor is connected with the control device and is controlled by the control device; the rotation monitoring part is a gear sensor and is fixedly arranged on the soot blower body, and the rotation monitoring part is aligned with the gear teeth and the tooth groove part of the second gear.

Furthermore, the soot blower body is respectively provided with a rear limit switch and a front limit switch at the initial position of the stroke and the tail end position of the stroke, and the rear limit switch and the front limit switch are respectively connected with the control device.

Further, the rear limit switch and the front limit switch are replaced by a gear sensor.

Further, still including the monitor, stroke monitoring part, rotation monitoring part, back limit switch and preceding limit switch respectively through the monitor with controlling means is connected, adopt POE power supply between monitor and stroke monitoring part, rotation monitoring part, back limit switch, preceding limit switch and the controlling means.

Furthermore, the travel motor is equipped with a motor sensor, and the motor sensor is connected with the control device and used for monitoring the working current of the travel motor.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting is used for monitoring the stroke monitoring part that the soot blower body advances the position to send monitoring signal to controlling means, and controlling means judges whether the stroke is unusual according to the signal, if judge that the stroke is unusual, send out alarm and/or control stroke actuating mechanism so that the soot blower body withdraws, so as to avoid the blowpipe to stop in a certain position in the boiler for a long time, thereby can prevent effectively that boiler water-cooling wall from being destroyed or blowpipe return bend and can't withdraw from scheduling problem;

2. the utility model discloses a setting is used for monitoring the rotatory rotation monitoring part of blowpipe to monitor signal transmission controlling means, controlling means judges whether the blowpipe rotates unusually according to the signal, if judge that it is unusual to rotate, send out the police dispatch newspaper and/or control stroke actuating mechanism so that the soot blower body withdraws, in order to avoid the blowpipe to sweep a certain position for a long time, thereby can prevent effectively that boiler water-cooling wall from being destroyed or the blowpipe return bend can't withdraw from the scheduling problem;

3. a rear limit switch and a front limit switch are arranged, so that the soot blower body can automatically switch after moving to the tail end position and the initial position of the movement, and the moving direction can be automatically switched;

4. through POE power supply, the information interaction and the power supply of each part can be accomplished by a net twine, and used wire rod is few, is convenient for manage the line, practices thrift the cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

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

Referring to fig. 1, a preferred embodiment of the present invention provides a safe boiler soot blower, which comprises a soot blower body 1, a blowing pipe 2 disposed on the soot blower body 1, a plurality of nozzles disposed at the front of the blowing pipe 2, a stroke driving mechanism for driving the soot blower body 1 to advance or retreat, and a control device 4, wherein the control device 4 adopts a PLC controller, and further comprises a stroke monitoring part 8 for monitoring the advancing position of the soot blower body 1, the stroke monitoring part 8 is connected with the control device 4, the control device 4 receives the signal of the stroke monitoring part 8 and judges whether the stroke of the soot blower body 1 and the blowing pipe 2 thereon is abnormal, if the control device 4 judges that the stroke of the soot blower body 1 and the blowing pipe 2 thereon is abnormal, the control device 4 issues an alarm and/or controls the stroke drive mechanism to retract the sootblower body 1.

In a traditional boiler soot blower, a control device controls a corresponding driving mechanism to enable a soot blower body to move forwards or backwards at a constant speed, a blowing pipe is arranged on the soot blower body, one or more nozzles are arranged at the front part of the blowing pipe, and high-pressure gas is sprayed out from the nozzles through the blowing pipe to blow off accumulated soot on a heating surface of a boiler to complete blowing.

In the preferred embodiment, in implementation, a stroke monitoring part for monitoring the advancing position of the soot blower body 1 is arranged, a monitoring signal is transmitted to the control device 4, the control device 4 judges whether the stroke is abnormal or not according to the signal, and if the stroke is abnormal, an alarm is sent out and/or the stroke driving mechanism is controlled to withdraw the soot blower body 1, so that the problem that the blowing pipe 2 stays at a certain position in the boiler for a long time is avoided, and the problems that the water cooling wall of the boiler is damaged or the blowing pipe is bent to prevent the blowing pipe from being unable to withdraw and the like can be effectively prevented.

Specifically, with continued reference to fig. 1, the safety boiler soot blower includes a support 6, a traveling rail 10 is transversely disposed on the support 6, a stroke driving mechanism includes a rack 5 fixedly mounted on the support 6, a stroke motor (not shown in the figure) mounted on the soot blower body 1, and a first gear 7 driven by the stroke motor to rotate, the stroke motor is mounted in a motor box 15 on the soot blower body 1, the first gear 7 is fixedly mounted on a rotating shaft driven by the stroke motor to rotate, the first gear 7 is engaged with the rack 5, the rotating shaft is further rotatably mounted with traveling wheels 16 (two traveling wheels 16 are disposed on two sides of the gear box, only one traveling wheel is shown in the figure and coaxially disposed to facilitate supporting and traveling of the soot blower body 1), the traveling wheels 16 are disposed on the traveling rail 10, the stroke motor is a forward and reverse rotation motor, is connected with the control device 4 and controlled by the control device 4, during implementation, the control device 4 controls the stroke motor to operate, so that the stroke motor drives the first gear 7 to rotate, the first gear 7 and the rack 5 act, and under the action of the first gear 7 and the rack 5 and the action of the travelling wheels 16 and the travelling track 10, the soot blower body 1 can travel linearly, namely, forwards or backwards. The stroke motor is provided with a motor sensor, the motor sensor is connected with the control device 4 and used for monitoring the working current of the stroke motor, when the stroke device (a gear box or a transmission mechanism, such as a guide rail and the like) is jammed or is jammed with coking in a furnace wall, the current of the stroke motor can be increased, and the detected working current can be converted into appropriate signal information to be transmitted to the control device 4 through the motor sensor, so that monitoring is realized.

The stroke monitoring part 8 is a gear sensor and is fixedly arranged on the soot blower body 1, and the stroke monitoring part 8 is aligned with the gear teeth and the tooth groove part of the rack 5. The rack 5 is provided with a plurality of gear teeth and a tooth space between every two adjacent gear teeth, the stroke monitoring part 8 of the gear sensor is aligned with the gear teeth and the tooth space part of the rack 5, when the first gear 7 rotates under the driving of the stroke motor, the stroke monitoring part 8 of the gear sensor does linear motion along with the linear motion of the soot blower body 1, at the moment, the stroke monitoring part 8 aligned with the gear teeth and the tooth space part of the rack 5 can be sequentially aligned with the gear teeth and the tooth space of the rack 5, the stroke monitoring part 8 detects a pulse signal when each pair of gear teeth of one rack 5 are aligned, and transmits the pulse signal to the control device 4, the control device 4 can obtain the number of the gear teeth of the rack 5 passed by the soot blower body 1 according to the number of the pulse signals transmitted by the stroke monitoring part 8, thereby calculating the travel distance of the soot blower body 1, namely, the advancing position of the soot blower body 1 is obtained, the control device 4 also has the function of time counting, and the travelling speed of the soot blower body 1 is calculated according to the function of time counting.

In the preferred embodiment, different types of stroke monitoring components 8 can be provided according to different stroke driving mechanisms, and the stroke monitoring component 8 can be a gear sensor (pulse signal), an encoder (position degree signal) or a pull-wire type stroke sensor (stroke signal) which is used for detecting the stroke position degree of the blow pipe, and the specific use type can be selected according to specific implementation conditions.

In the preferred embodiment, referring to fig. 1, a blowing pipe 2 is rotatably arranged on a soot blower body 1, a rotation monitoring part 3 for monitoring the rotation of the blowing pipe 2 is arranged on the soot blower body 1, the rotation monitoring part 3 is connected with a control device 4, the control device 4 receives a signal of the rotation monitoring part 3 and judges whether the rotation of the blowing pipe 2 is abnormal, and if the control device 4 judges that the rotation of the blowing pipe 2 is abnormal, the control device 4 gives an alarm and/or controls a stroke driving mechanism to withdraw the soot blower body 1. The soot blower comprises a soot blower body 1, a rotation driving mechanism used for driving a blowing pipe 2 to rotate is arranged on the soot blower body 1, the rotation driving mechanism used for driving the blowing pipe 2 to rotate is arranged on the soot blower body 1, the rotation driving mechanism comprises a chain 9, a rotation motor (not shown in the figure) fixedly installed on the soot blower body 1 and driving the chain 9 to drive, and a second gear 11 fixedly installed on the periphery of the blowing pipe 2, the second gear 11 is meshed with the chain 9, and the rotation motor is connected with a control device 4 and is controlled by the control device 4. When the blowing pipe blowing device is used, the driving gear 17 is arranged on an output shaft of the rotating motor, the chain 9 is sleeved on the driving gear 17 and the second gear 11, the control device 4 controls the rotating motor to operate to drive the driving gear 17 to drive the chain 9, and the chain 9 drives the second gear 11 to rotate to drive the blowing pipe 2 to rotate. The rotation monitoring part 3 is a gear sensor and is fixedly arranged on the soot blower body 1, and the rotation monitoring part 3 is aligned with the gear teeth and the tooth groove part of the second gear 11. The second gear 11 has a plurality of teeth and a tooth space between every two adjacent teeth, the rotation monitoring part 3 of the gear sensor is aligned with the teeth and the tooth space of the second gear 11, when the second gear 11 is driven by the rotating motor to rotate, the rotation monitoring part 3 aligned with the teeth and the tooth space of the second gear 11 will be aligned with the teeth and the tooth space of the second gear 11 in turn, and the rotation monitoring part 3 detects a pulse signal when each pair of teeth of the second gear 11 is aligned, and transmits the pulse signal to the control device 4, and the control device 4 calculates the rotation speed of the blow pipe 2 according to the number of the pulse signals transmitted from the rotation monitoring part 3, the time interval of the pulse signal, and the like.

In the preferred embodiment, different types of rotation monitoring components 3 can be arranged according to different stroke driving mechanisms, the rotation monitoring components 3 can be a gear sensor (pulse signal) or an encoder (position degree signal) which is used for detecting the rotation state of the blow pipe, and the specific use type can be selected according to specific implementation conditions.

The soot blower body 1 is provided with a rear limit switch 12 and a front limit switch 13 at the initial position of the stroke and the tail end position of the travel respectively, the rear limit switch 12 and the front limit switch 13 are installed at two ends of the support 6 respectively, the rear limit switch 12 and the front limit switch 13 are connected with the control device 4 respectively, when the soot blower body 1 travels and touches the rear limit switch 12 or the front limit switch 13, the switch is pressed and disconnected, and the control device 4 receives signals to control the stroke motor to change the traveling direction of the soot blower body 1. If the soot blower body 1 travels to the travel tail end position and touches the rear limit switch 12 to turn off the rear limit switch 12, the control device 4 receives a signal to control the stroke motor to rotate reversely, so that the soot blower body 1 returns. In other preferred embodiments, the rear limit switch 12 and the front limit switch 13 may be replaced by proximity sensors.

In this preferred embodiment, safe boiler soot blower is still including monitor 14, stroke monitor part 8, rotate monitor part 3, back limit switch 12 and preceding limit switch 13 are connected with controlling means 4 through monitor 14 respectively, monitor 14 and stroke monitor part 8, rotate monitor part 3, back limit switch 12, adopt the POE power supply between preceding limit switch 13 and the controlling means 4, through the POE power supply, the information interaction and the power supply of each part can be accomplished by a net twine, used wire rod is few, be convenient for reason line, and the cost is saved.

Taking the preferred embodiment as an example, in the implementation, a boiler soot blower is used for blowing soot, a stroke driving mechanism drives a soot blower body 1 to move forwards or backwards, a rotation driving mechanism drives a blowing pipe 2 to rotate, when the phenomena of clamping, slow walking and the like occur due to the bending of the blowing pipe 2, the direct contact effect with a boiler hearth, the breakage of a rack 5 and the like, the stroke of the soot blower body 1 and the blowing pipe 2 on the soot blower body are abnormal, the quantity of pulse signals which are detected by a stroke monitoring part 8 of a gear sensor and transmitted to a control device 4 in corresponding time is less than a preset threshold value of the control device 4, the control device 4 judges that the position of the soot blower body 1 or the walking speed is abnormal, the stroke of the soot blower body 1 and the blowing pipe 2 on the soot blower body 1 is abnormal, the control device 4 gives an alarm and/or controls the stroke driving mechanism to withdraw the, when the soot blower body 1 withdraws, the blowing pipe 2 is driven to withdraw at the same time, so that the blowing pipe 2 leaves the boiler, and the problem that the blowing pipe 2 stays at a certain position in the boiler for a long time is avoided, and the problems that a water-cooling wall of the boiler is damaged or the blowing pipe bends to be incapable of withdrawing and the like can be effectively prevented; when the blowpipe 2 is abnormal in rotation due to the bending of the blowpipe 2, the direct contact effect with a boiler hearth, the breakage of the chain 9 and other reasons, the blowpipe 2 is abnormal in rotation, the quantity of pulse signals which are detected by the rotation monitoring part 3 of the gear sensor and transmitted to the control device 4 in corresponding time is less, the pulse signals are lower than a preset threshold value of the control device 4, the control device 4 judges that the blowpipe 2 is abnormal in rotation, the control device 4 sends out an alarm and/or controls the stroke driving mechanism to withdraw the soot blower body 1, the soot blower body 1 simultaneously drives the blowpipe 2 to withdraw when withdrawing, so that the blowpipe 2 is away from the boiler, and the problem that the blowpipe 2 purges a certain position for a long time is avoided, and therefore, the problems that the water cooling wall of the boiler is.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A safe boiler soot blower comprises a soot blower body (1), a blowing pipe (2) arranged on the soot blower body (1), one or more nozzles arranged at the front part of the blowing pipe (2), a stroke driving mechanism for driving the soot blower body (1) to advance or retreat, and a control device (4), and is characterized in that: the stroke monitoring device is characterized by further comprising a stroke monitoring part (8) used for monitoring the advancing position of the soot blower body (1), wherein the stroke monitoring part (8) is connected with the control device (4), the control device (4) receives signals of the stroke monitoring part (8) and judges whether the stroke of the soot blower body (1) and a blowing pipe (2) on the soot blower body is abnormal or not, and if the control device (4) judges that the stroke of the soot blower body (1) and the blowing pipe (2) on the soot blower body is abnormal, the control device (4) gives an alarm and/or controls a stroke driving mechanism to enable the soot blower body (1) to withdraw.

2. A safety boiler sootblower as claimed in claim 1, wherein: the blowing pipe (2) is rotatably arranged on the soot blower body (1), a rotating monitoring part (3) used for monitoring the rotation of the blowing pipe (2) is arranged on the soot blower body (1), the rotating monitoring part (3) is connected with the control device (4), the control device (4) receives a signal of the rotating monitoring part (3) and judges whether the rotation of the blowing pipe (2) is abnormal, and if the control device (4) judges that the rotation of the blowing pipe (2) is abnormal, the control device (4) sends an alarm and/or controls a stroke driving mechanism so that the soot blower body (1) withdraws.

3. A safety boiler sootblower as claimed in claim 1, wherein: the stroke monitoring part (8) is a gear sensor or an encoder or a pull-wire type stroke sensor.

4. A safety boiler sootblower as claimed in claim 1, wherein: the stroke driving mechanism comprises a fixedly mounted rack (5), a stroke motor mounted on the soot blower body (1) and a first gear (7) driven to rotate by the stroke motor, the first gear (7) is meshed with the rack (5), and the stroke motor is connected with the control device (4) and controlled by the control device (4); the stroke monitoring part (8) is a gear sensor and is fixedly arranged on the soot blower body (1), and the stroke monitoring part (8) is aligned with the gear teeth and the tooth groove part of the rack (5).

5. A safety boiler sootblower as claimed in claim 2, wherein: the rotation monitoring part (3) is a gear sensor or an encoder.

6. A safety boiler sootblower as claimed in claim 2, wherein: the soot blower body (1) is provided with a rotation driving mechanism for driving the blowing pipe (2) to rotate, the rotation driving mechanism comprises a chain (9), a rotation motor which is fixedly arranged on the soot blower body (1) and drives the chain (9) to transmit, and a second gear (11) which is fixedly sleeved on the periphery of the blowing pipe (2), the second gear (11) is meshed with the chain (9), and the rotation motor is connected with the control device (4) and is controlled by the control device (4); the rotating monitoring part (3) is a gear sensor and is fixedly installed on the soot blower body (1), and the rotating monitoring part (3) is aligned with the gear teeth and the tooth groove part of the second gear (11).

7. A safety boiler sootblower as claimed in claim 2, wherein: the soot blower body (1) is provided with a rear limit switch (12) and a front limit switch (13) at the initial position and the tail end of the stroke respectively, and the rear limit switch (12) and the front limit switch (13) are connected with the control device (4) respectively.

8. A safety boiler sootblower as claimed in claim 7, wherein: the rear limit switch (12) and the front limit switch (13) are replaced by gear sensors.

9. A safety boiler sootblower as claimed in claim 7, wherein: still including monitor (14), stroke monitor part (8), rotation monitor part (3), back limit switch (12) and preceding limit switch (13) respectively through monitor (14) with controlling means (4) are connected, adopt POE power supply between monitor (14) and stroke monitor part (8), rotation monitor part (3), back limit switch (12), preceding limit switch (13) and controlling means (4).

10. A safety boiler soot blower as claimed in claim 4, characterized in that: the travel motor is provided with a motor sensor, and the motor sensor is connected with the control device (4) and used for monitoring the working current of the travel motor.

Images