阅读说明：本技术 用于锅炉吹灰器的便携式进退控制装置 (Portable advancing and retreating control device for boiler soot blower ) 是由 杭惠忠 高峰 巢平源 严斌 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种用于锅炉吹灰器的便携式进退控制装置,本装置包括壳体内设置的驱动主回路和控制回路；驱动主回路包括依次连接的三相断路器、交流接触器和热保护继电器,控制回路包括隔离变压器、前进按钮、后退按钮、停止按钮、前进指示灯、后退指示灯和停止指示灯,隔离变压器输入端连接三相断路器输出端,前进按钮、后退按钮、停止按钮、前进指示灯、后退指示灯和停止指示灯与交流接触器和热保护继电器的二次控制元件构成吹灰器的进退控制电路,隔离变压器输出端提供进退控制电路的工作电源。本装置实现现场紧急状态下对吹灰器的临时供电,从而控制吹灰器进退,避免吹灰管受热变形弯曲,杜绝吹灰器操作的安全隐患,确保锅炉的平稳运行。(The invention discloses a portable advance and retreat control device for a boiler soot blower, which comprises a driving main loop and a control loop which are arranged in a shell; the driving main loop comprises a three-phase circuit breaker, an alternating current contactor and a thermal protection relay which are sequentially connected, the control loop comprises an isolation transformer, an advancing button, a retreating button, a stopping button, an advancing indicating lamp, a retreating indicating lamp and a stopping indicating lamp, the input end of the isolation transformer is connected with the output end of the three-phase circuit breaker, the advancing button, the retreating button, the stopping button, the advancing indicating lamp, the retreating indicating lamp and the stopping indicating lamp form an advancing and retreating control circuit of the soot blower together with secondary control elements of the alternating current contactor and the thermal protection relay, and the output end of the isolation transformer provides a working power supply of the advancing and retreating control circuit. The device realizes temporary power supply to the soot blower in an on-site emergency state, thereby controlling the soot blower to advance and retreat, avoiding the soot blowing pipe from being heated, deformed and bent, avoiding the potential safety hazard of soot blower operation and ensuring the stable operation of the boiler.)

1. A portable advance and retreat controlling means for boiler soot blower which characterized in that: the device comprises a shell, a driving main loop and a control loop, wherein the driving main loop and the control loop are arranged in the shell;

the driving main circuit comprises a three-phase circuit breaker, an alternating current contactor and a thermal protection relay which are sequentially connected, the control circuit comprises an isolation transformer, a forward button, a backward button, a stop button, a forward indicator lamp, a backward indicator lamp and a stop indicator lamp, the input end of the isolation transformer is connected with the output end of the three-phase circuit breaker, the forward button, the backward button, the stop button, the forward indicator lamp, the backward indicator lamp and the stop indicator lamp form a forward and backward control circuit of the soot blower with secondary control elements of the alternating current contactor and the thermal protection relay, and the output end of the isolation transformer provides a working power supply of the forward and backward control circuit.

2. The portable forward and backward control device for a boiler soot blower according to claim 1, characterized in that: the device further comprises an input wiring terminal and an output wiring terminal, wherein the input end of the three-phase circuit breaker is connected to the input wiring terminal, and the output end of the thermal protection relay is connected to the output wiring terminal.

3. The portable forward and backward control device for a boiler soot blower according to claim 1 or 2, characterized in that: the device further comprises a fuse, wherein the fuse is arranged between the input end of the isolation transformer and the output end of the three-phase circuit breaker.

4. The portable forward and backward control device for a boiler sootblower according to claim 3, characterized in that: the device further comprises an emergency illuminating lamp and an illuminating switch, wherein the output end of the isolation transformer is connected with the emergency illuminating lamp, and the illuminating switch controls the emergency illuminating lamp to be turned on or turned off.

5. The portable forward and backward control device for a boiler sootblower according to claim 3, characterized in that: the voltage of the input end of the isolation transformer is 380V, and the voltage of the output end of the isolation transformer is 24V.

6. The portable forward and backward control device for a boiler soot blower according to claim 4 or 5, characterized in that: the casing is plastic polyvinyl chloride insulating casing and embedded operating panel, go forward button, retreat button, stop button, the pilot lamp that advances, retreat pilot lamp and stop the pilot lamp and install on operating panel.

Technical Field

The invention relates to the technical field of equipment maintenance, in particular to a portable advancing and retreating control device for a boiler soot blower.

Background

In order to avoid the influence of coking on the heating surface of the boiler after long-term operation on heat transfer, a soot blower is generally adopted for blowing soot so as to remove the soot on the heating surface of the boiler and achieve the purpose of cleaning the heating surface. The common soot blower is arranged in an open air environment, and due to the fact that the common soot blower bears rain and snow erosion and the influence of high temperature of a hearth, the transmission part of the common soot blower has cable faults, and due to the conditions of guide rail aging deformation, derailment and the like, the common soot blower is retained in the hearth in the soot blowing process and cannot exit. At this time, an operator is usually required to manually hand the soot blower to an exit position, 5 persons are required to perform cooperative operation in the whole operation process, and more than 2 hours are consumed. And the soot blower is very easy to be heated, deformed and bent after the soot blower is withdrawn for too long time, and even blocked in a hearth, so that the safe operation of the boiler is seriously influenced.

The fault frequency of the soot blower is in direct proportion to the running time and the use frequency, and the soot blower of a 3 # machine long gun of a certain power plant is taken as an example and is provided with 30 long gun soot blowing pipes, soot blowing is carried out in turn every day, and the soot blower is detained in a hearth for 3-5 times every month and needs to be manually shaken to exit. Especially, when rush-repair is carried out at night, the high-temperature steam overflows and heavy manual operation is carried out by manual operation, so that the maintainers do not have to carry out manual operation, and great safety risk exists.

Disclosure of Invention

The invention aims to solve the technical problem of providing a portable advance and retreat control device for a boiler soot blower, which overcomes the defect of manual hand-operated operation of the traditional soot blower and realizes temporary power supply to the soot blower in an on-site emergency state, thereby controlling the advance and retreat of the soot blower, avoiding the soot blowing pipe from being heated, deformed and bent, avoiding the potential safety hazard of soot blower operation and ensuring the stable operation of a boiler.

In order to solve the technical problem, the portable advancing and retreating control device for the boiler soot blower comprises a shell, a driving main loop and a control loop, wherein the driving main loop and the control loop are arranged in the shell;

the driving main circuit comprises a three-phase circuit breaker, an alternating current contactor and a thermal protection relay which are sequentially connected, the control circuit comprises an isolation transformer, a forward button, a backward button, a stop button, a forward indicator lamp, a backward indicator lamp and a stop indicator lamp, the input end of the isolation transformer is connected with the output end of the three-phase circuit breaker, the forward button, the backward button, the stop button, the forward indicator lamp, the backward indicator lamp and the stop indicator lamp form a forward and backward control circuit of the soot blower with secondary control elements of the alternating current contactor and the thermal protection relay, and the output end of the isolation transformer provides a working power supply of the forward and backward control circuit.

Furthermore, this device still includes input binding post and output binding post, three-phase circuit breaker's input is connected to input binding post, thermal protection relay's output is connected to output binding post.

Furthermore, this device still includes the fuse, the fuse is located between isolation transformer input and the three-phase circuit breaker output.

Furthermore, the device also comprises an emergency illuminating lamp and an illuminating switch, wherein the output end of the isolation transformer is connected with the emergency illuminating lamp, and the illuminating switch controls the emergency illuminating lamp to be turned on or turned off.

Further, the voltage of the input end of the isolation transformer is 380V, and the voltage of the output end of the isolation transformer is 24V.

Further, the casing is a plastic polyvinyl chloride insulating casing and is embedded with an operation panel, and the forward button, the backward button, the stop button, the forward indicator light, the backward indicator light and the stop indicator light are mounted on the operation panel.

The portable advance and retreat control device for the boiler soot blower adopts the technical scheme, namely the device comprises a driving main loop and a control loop which are arranged in a shell; the driving main loop comprises a three-phase circuit breaker, an alternating current contactor and a thermal protection relay which are sequentially connected, the control loop comprises an isolation transformer, an advancing button, a retreating button, a stopping button, an advancing indicating lamp, a retreating indicating lamp and a stopping indicating lamp, the input end of the isolation transformer is connected with the output end of the three-phase circuit breaker, the advancing button, the retreating button, the stopping button, the advancing indicating lamp, the retreating indicating lamp and the stopping indicating lamp form an advancing and retreating control circuit of the soot blower together with secondary control elements of the alternating current contactor and the thermal protection relay, and the output end of the isolation transformer provides a working power supply of the advancing and retreating control circuit. The device overcomes the defect of manual hand operation of the traditional soot blower, realizes temporary power supply to the soot blower in a field emergency state, controls the forward and backward movement of the soot blower, avoids the thermal deformation and bending of a soot blowing pipe, stops the potential safety hazard of soot blower operation, and ensures the stable operation of a boiler.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a schematic view of a portable forward and backward control device for a boiler soot blower according to the present invention.

Detailed Description

Embodiment as shown in fig. 1, the portable advance and retreat control device for the soot blower of the boiler comprises a shell 1, a main driving loop 2 and a control loop 3, wherein the main driving loop 2 and the control loop 3 are arranged in the shell 1;

the driving main loop 2 comprises a three-phase circuit breaker 21, an alternating current contactor 22 and a thermal protection relay 23 which are sequentially connected, the control loop 3 comprises an isolation transformer 31, a forward button 32, a backward button 33, a stop button 34, a forward indicator lamp 35, a backward indicator lamp 36 and a stop indicator lamp 37, the input end of the isolation transformer 31 is connected with the output end of the three-phase circuit breaker 21, the forward button 32, the backward button 33, the stop button 34, the forward indicator lamp 35, the backward indicator lamp 36 and the stop indicator lamp 37 and secondary control elements of the alternating current contactor 22 and the thermal protection relay 23 form a forward and backward control circuit of a soot blower, and the output end of the isolation transformer 31 provides a working power supply of the forward and backward control circuit.

Preferably, the device further comprises an input terminal 24 and an output terminal 25, wherein the input end of the three-phase circuit breaker 21 is connected to the input terminal 24, and the output end of the thermal protection relay 23 is connected to the output terminal 25. The input wiring terminal and the output wiring terminal are used for fast wiring in an emergency state, the input wiring terminal is connected to a field alternating current power supply P through a cable, the output wiring terminal is connected to a field soot blowing motor M through a cable, and control of the soot blowing motor M is achieved through the device.

Preferably, the device further comprises a fuse 38, wherein the fuse 38 is arranged between the input end of the isolation transformer 31 and the output end of the three-phase circuit breaker 21. The fuse is used for short-circuit protection of the control loop, and safety is guaranteed.

Preferably, the device further comprises an emergency lighting lamp 39 and a lighting switch 40, wherein the output end of the isolation transformer 31 is connected with the emergency lighting lamp 39, and the lighting switch 40 controls the emergency lighting lamp 39 to be turned on or off. The emergency lighting lamp is used for lighting the night soot blower operation.

Preferably, the voltage at the input end of the isolation transformer 31 is 380V, and the voltage at the output end is 24V. The control loop adopts 24V safety voltage and is completely isolated from the main loop 380V so as to ensure the personal safety of operators.

Preferably, the housing 1 is a plastic polyvinyl chloride insulating housing and has an operation panel embedded therein, and the forward button 32, the backward button 33, the stop button 34, the forward indicator lamp 35, the backward indicator lamp 36, and the stop indicator lamp 37 are mounted on the operation panel.

The device is equivalent to a controllable power device carried by an operator, and a main driving loop and a control loop for controlling the advance and retreat of the soot blower of the boiler are integrated in the shell, so that the device is convenient to carry; only need connect outside alternating current power supply and soot blower motor at the scene, realize the advance and retreat control of trouble soot blower through drive major loop and control circuit, satisfy on-the-spot emergency and to the interim power supply of soot blower, control the advance and retreat of soot blower, need not artifical manual operation, can high-efficiently retreat the soot blower to safe position fast.

This device is when in-service use, external AC power supply and on-the-spot soot blower motor are connected respectively to three-phase circuit breaker and thermal protection relay, must confirm before the connection that the boiler soot blower power has been listed as the power failure, the three-phase circuit breaker is in the off position, at first output binding post passes through the cable and link to each other with the soot blower motor, input binding post passes through the cable and overhauls AC power supply with the outside and links to each other, it should be reliable to inspect the connecting cable, no winding, after ground connection is good, close the three-phase circuit breaker, each pilot lamp of inspection shows normally not to report to the police. If the soot blower needs to be controlled to exit to the initial position, the back button only needs to be pressed by inching, the rotating direction of the soot blowing motor is observed at the same time, and the stop button is pressed when the error of the rotating direction is found. And if the exit position is not ideal, the soot blower can be moved back and forth until the soot blower moves back to the soot blowing initial position. If the abnormality is found in the operation process, the operation is immediately stopped, and the operation can be carried out after the abnormality is eliminated. If meet night and salvage the accessible light switch and open emergency lighting lamp in order to facilitate the operation, ensure personnel and equipment safety.