CN210511679U

CN210511679U - Ultralow nitrogen combustor

Info

Publication number: CN210511679U
Application number: CN201921236179.5U
Authority: CN
Inventors: 朱容君; 蔡权; 王鹏展
Original assignee: Nanyang Zhongtong Explosion Proof Motor Electric Appliance Co ltd
Current assignee: Nanyang Zhongtong Intelligent Technology Group Co.,Ltd.
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-12
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses an ultra-low nitrogen burner, which comprises a fan and a combustion cylinder which are connected, wherein the fan is provided with an integrated control box, and a combustion controller is arranged in the integrated control box; a combustible gas detection module, a wind pressure sensing module and a temperature sensor are arranged in the fan, and the combustible gas detection module, the wind pressure sensing module and the temperature sensor are all connected with a combustion controller; the combustion controller is connected with an alarm. The utility model provides an ultralow nitrogen combustor can monitor simultaneously whether combustible gas content, temperature and wind pressure in the combustor fan are in the settlement scope, ensures combustor safe operation.

Description

Ultralow nitrogen combustor

Technical Field

The utility model relates to a combustor field especially relates to an ultralow nitrogen combustor.

Background

NOx emissions below 30 milligrams are commonly referred to as ultra-low nitrogen burners. The existing ultra-low nitrogen burner only meets the combustion function and has less consideration on safety. When some unexpected conditions occur in the working process of the ultra-low nitrogen burner, such as faults of high temperature of a machine body, combustible gas leakage, no wind when a fan stops rotating and the like, safety accidents are easy to occur because an operator cannot timely obtain fault information and cannot timely troubleshoot the faults.

Wherein the burner is a thermal energy device that converts fuel into heat. Due to the influence of heat radiation and negative pressure of a hearth, the temperature of a machine body is easily overhigh, and the temperature of the machine body is high, so that electric elements such as a flame detector, a valve actuator, a fan, an igniter, a controller and the like are burnt out and deformed, the direct performance is lost, and the accident is caused by misoperation or no action.

The fuel of the burner mainly comprises flammable and explosive gases such as natural gas, methanol, methane, coal gas and the like, the flammable and explosive gases are leaked from time to time due to pipeline sealing or over-high pressure and the like, and the flammable and explosive gases are likely to explode when meeting sparks after being leaked, so that the danger is high.

The burner must have air to burn. The fan is the air supply equipment of combustor, and long-time incessant operation very easily causes the fan trouble not to operate or electric current grow, switch outage, leads to the air quantity not enough. If the air quantity is insufficient or no air exists, the explosion limit is easily reached, and explosion accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ultra-low nitrogen combustor can monitor simultaneously whether combustible gas content, temperature and wind pressure in the combustor fan are in the settlement scope, ensures combustor safe operation.

In order to achieve the purpose, the utility model provides an ultra-low nitrogen burner, which comprises a fan and a combustion cylinder which are connected, wherein the fan is provided with an integrated control box, and a combustion controller is arranged in the integrated control box; a combustible gas detection module, a wind pressure sensing module and a temperature sensor are arranged in the fan, and the combustible gas detection module, the wind pressure sensing module and the temperature sensor are all connected with a combustion controller; the combustion controller is connected with an alarm.

As a further improvement of the utility model, the temperature sensor is a thermal resistor.

As a further improvement of the present invention, the combustion controller is an LMV51.100C2 controller.

As a further improvement of the present invention, the combustible gas detection module comprises an MQ-2 combustible gas sensor; the A end of the MQ-2 is connected with the power end of the combustion controller, and the B end of the MQ-2 is grounded.

As a further improvement of the present invention, the alarm is an audible indicator HA.

As a further improvement, the integrated control box is provided with an operating panel, and the operating panel is connected with the combustion controller.

As a further improvement, the wind pressure sensing module is connected with the fan through the quick detach device, the quick detach device includes first connecting portion and the second connecting portion of pegging graft each other, the wind pressure sensing module sets up in first connecting portion one end, the second connecting portion dress is on the fan lateral wall, first connecting portion are equipped with the one end of wind pressure sensing module and pass second connecting portion and fan lateral wall in proper order and lie in the fan inboard.

As a further improvement of the present invention, the first connecting portion includes a rod body; the wind pressure sensing module is arranged at one end of the rod body, and the other end of the rod body is provided with a handle; at least two convex parts are arranged on the side wall of the middle part of the rod body around the axis of the rod body; the second connecting portion include the pedestal, and the top middle part of pedestal is equipped with and inside intercommunication of fan, supplies the mounting hole that the body of rod passed, be equipped with on the pedestal with spacing portion of bellying looks adaptation.

As a further improvement of the utility model, spacing portion including set up on the pedestal, with the inner chamber of mounting hole intercommunication, the edge that lies in the mounting hole on the pedestal be equipped with the logical groove that the bellying corresponds is equipped with the elastic component and the clamp plate that are connected in the inner chamber, clamp plate and bellying contact.

As a further improvement of the present invention, the rod body is provided with a sealing cover which is located outside the seat body in a threaded connection manner, and the edge of the sealing cover faces the seat body and is provided with a sealing ring.

Advantageous effects

Compared with the prior art, the utility model discloses an ultralow nitrogen combustor's advantage does:

1. real-time monitoring is carried out through the temperature sensor, the device is guaranteed not to be high in temperature, and meanwhile interlocking alarming is carried out. Combustible gas content in the fan is monitored through the combustible gas detection module, the combustible gas content is ensured to be located in a proper range, and meanwhile, interlocking alarm is carried out, so that workers are reminded of removing faults in time, and explosion is avoided. In addition, the running wind pressure of the fan is monitored in real time through the wind pressure sensing module, and the alarm and the power failure are carried out when no wind pressure exists. The three functions can improve the use safety of the ultra-low nitrogen burner and ensure the safety of property and personnel.

2. The wind pressure sensing module on the fan can be quickly disassembled. The first connecting part and the second connecting part of the quick-release device adopt a plug-in mode. When shutting down, through rotatory first connecting portion and take it out from second connecting portion middle part, can take out wind pressure sensing module and maintain the maintenance, convenient and fast.

3. After the rod body is inserted into the seat body, the sealing cover on the rod body rotates relative to the rod body, the sealing cover is close to the top end face of the seat body until the sealing ring on the sealing cover is in close contact with the top end face of the seat body, and therefore the combustible gas in the fan can be prevented from being leaked to the outside from the quick-assembly and disassembly device, and explosion is avoided.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic external view of an ultra-low nitrogen burner in example 1;

FIG. 2 is one of schematic circuit diagrams of an ultra-low nitrogen burner in accordance with embodiment 1;

FIG. 3 is a second schematic diagram of the circuit part of the ultra-low nitrogen burner of the embodiment 1;

FIG. 4 is a third schematic diagram of an electric circuit part of the ultra-low nitrogen burner of the embodiment 1;

FIG. 5 is a schematic diagram of a second connecting portion of the quick release device of the wind pressure sensing module in embodiment 2;

FIG. 6 is a schematic view of a first connection portion of a quick release device of a pressure sensing module in accordance with embodiment 2;

fig. 7 is an assembly view of the quick release device for the pressure sensing module in embodiment 2.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Example 1

The utility model discloses a specific embodiment is as shown in fig. 1 to fig. 4, an ultra-low nitrogen combustor, including fan 1 and the section of thick bamboo 2 that is connected, install integrated control case 3 on the fan 1, be equipped with combustion controller 7 in the integrated control case 3. The fan 1 is internally provided with a combustible gas detection module 4, a wind pressure sensing module 5 and a temperature sensor 6, and the combustible gas detection module 4, the wind pressure sensing module 5 and the temperature sensor 6 are all connected with a combustion controller 7. The combustion controller 7 is connected with an alarm. The output end of the gas pipeline is connected with the joint of the output end of the fan 1 and the combustion cylinder 2. The combustion controller 7 is also connected to the fan 1 for supplying power thereto.

The temperature sensor 6 is a thermal resistor having a specification of PT 100. The combustion controller 7 is an LMV51.100C2 controller. The alarm is an audible indicator HA.

The combustible gas detection module 4 comprises an MQ-2 combustible gas sensor. The A end of MQ-2 is connected with the power end of the combustion controller 7, and the B end of MQ-2 is grounded. Specifically, MQ-2 includes 6 pins, and its

pins

1, 2 and 3 are connected to the power supply terminal of the combustion controller 7 through a resistor R1.

Pins

4, 5, 6 of MQ-2 are connected to ground through resistor R2. The R2 resistor serves to protect the sensor from burning out. In order to improve the reliability of the alarm, an RC parallel circuit is designed at the signal output end and comprises a resistor R3 and a capacitor C1.

The integrated control box 3 is provided with an operation panel 10, and the operation panel 10 is connected with the combustion controller 7. The operation panel 10 is AZL52.00B1. The combustion controller 7 is connected to an ignition transformer AGG5.220 for driving the ignition needle of the ultra-low nitrogen burner. An ion probe for detecting an ignition flame is also connected to the combustion controller 7. The combustion controller 7 is also connected to the valve actuator via a CANBUS. The valve actuator comprises a gas valve, an air valve and a smoke recovery valve. The combustion controller 7 controls the opening and closing of the valves by operating the respective valve actuators.

In addition, the combustion controller 7 starts/stops the control system by means of a knob SA 1. The combustion controller 7 is connected with a low-voltage switch, a high-voltage switch and a leakage switch. The low-voltage switch, the high-voltage switch and the leakage switch are all arranged on a gas main valve pipeline. Wherein, the low-pressure switch sets up in gas main valve upper reaches, and the high-pressure switch sets up in gas main valve low reaches.

When the operation of fan 1 was detected to at least one of them when combustible gas detection module 4, wind pressure sensing module 5 and temperature sensor 6 three was had problems (for example, the interior combustible gas content of fan is great, the wind pressure is not enough or the temperature is too high), then detected signal feeds back to combustion controller 7, combustion controller 7 sends the warning through sound indicator HA and reminds the staff, let the staff can in time get rid of the trouble, avoid unexpected circumstances such as the combustor explosion to appear, ensure equipment safe operation.

Example 2

As shown in fig. 5 to 7, the difference from embodiment 1 is that the wind pressure sensing module 5 is connected to the fan 1 through a quick release device, the quick release device includes a first connection portion 8 and a second connection portion 9 that are connected to each other, the wind pressure sensing module 5 is disposed at one end of the first connection portion 8, the second connection portion 9 is mounted on a sidewall of the fan 1, and one end of the first connection portion 8, at which the wind pressure sensing module 5 is disposed, sequentially passes through the second connection portion 9 and the sidewall of the fan 1 and is located inside the fan 1.

The first connection portion 8 includes a rod 81. The wind pressure sensing module 5 is arranged at one end of the rod body 81, and the other end of the rod body 81 is provided with a handle 82. At least two protrusions 83 are arranged on the side wall of the middle part of the rod body 81 around the axis of the rod body. The second connecting portion 9 includes a seat 91, a mounting hole 92 communicating with the inside of the fan 1 and allowing the rod 81 to pass is formed in the middle of the top end of the seat 91, and a limiting portion adapted to the protruding portion 83 is formed in the seat 91. The base 91 is fixed to the side wall of the fan 1 by bolts 95. And an electric wire on the wind pressure sensing module 5 penetrates through the middle part of the rod body 81 and extends out of the fan 1 to be connected with the combustion controller 7.

Spacing portion is including setting up on pedestal 91, the inner chamber 94 that communicates with mounting hole 92, and the edge that lies in mounting hole 92 on pedestal 91 is equipped with the logical groove 93 that corresponds with bellying 83, is equipped with the elastic component 96 and the clamp plate 97 that are connected in the inner chamber 94, and clamp plate 97 and bellying 83 contact. The elastic member 96 is a spring, and one end thereof is connected to the bottom of the cavity 94 and the other end thereof is connected to the pressing plate 97.

The rod 81 is connected with a sealing cover 84 outside the seat 91 by screw thread, and the edge of the sealing cover 84 faces the seat 91 and is provided with a sealing ring 85.

When the wind pressure sensing module 5 is installed, the rod 81 of the first connecting portion 8 sequentially passes through the base 91 and the sidewall of the fan 1, and the protrusion 83 on the rod 81 passes through the through groove 93 of the base 91 and enters the inner cavity 94, so that the wind pressure sensing module 5 enters the fan 1. The lever 81 is rotated to displace the boss 83 and the through groove 93 from each other. The pressing plate 97 presses the protrusion 83 of the rod 81 against the top of the cavity 94 of the seat 91 under the action of the elastic element 96, so as to connect the first connecting part 8 and the second connecting part 9. Then, by rotating the sealing cover 84 relative to the rod 81, the edge of the sealing cover 84 presses the top end face of the seat 91 to realize sealing, and gas in the blower 1 is prevented from leaking from the quick-release device gap.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.

Claims

1. An ultra-low nitrogen burner comprises a fan (1) and a combustion cylinder (2) which are connected, and is characterized in that an integrated control box (3) is installed on the fan (1), and a combustion controller (7) is installed in the integrated control box (3); a combustible gas detection module (4), a wind pressure sensing module (5) and a temperature sensor (6) are arranged in the fan (1), and the combustible gas detection module (4), the wind pressure sensing module (5) and the temperature sensor (6) are all connected with a combustion controller (7); the combustion controller (7) is connected with an alarm.

2. An ultra low nitrogen burner as claimed in claim 1, wherein said temperature sensor (6) is a thermal resistor.

3. An ultra low nitrogen burner as claimed in claim 1 or 2, wherein said combustion controller (7) is an LMV51.100C2 controller.

4. An ultra-low nitrogen burner as claimed in claim 3, characterized in that the combustible gas detection module (4) comprises an MQ-2 combustible gas sensor; the A end of MQ-2 is connected with the power end of the combustion controller (7), and the B end of MQ-2 is grounded.

5. The ultra-low nitrogen burner of claim 1, wherein said alarm is an audible indicator HA.

6. An ultra-low nitrogen burner as claimed in claim 1, wherein the integrated control box (3) is provided with an operation panel (10), and the operation panel (10) is connected with the combustion controller (7).

7. An ultra-low nitrogen burner as claimed in claim 1, wherein the wind pressure sensing module (5) is connected with the fan (1) through a quick-release device, the quick-release device comprises a first connecting portion (8) and a second connecting portion (9) which are mutually inserted, the wind pressure sensing module (5) is arranged at one end of the first connecting portion (8), the second connecting portion (9) is arranged on the side wall of the fan (1), and the end of the first connecting portion (8) where the wind pressure sensing module (5) is arranged sequentially passes through the second connecting portion (9) and the side wall of the fan (1) and is positioned at the inner side of the fan (1).

8. An ultra low nitrogen burner as claimed in claim 7, wherein the first connection portion (8) comprises a rod (81); the wind pressure sensing module (5) is arranged at one end of the rod body (81), and the other end of the rod body (81) is provided with a handle (82); at least two convex parts (83) are arranged on the side wall of the middle part of the rod body (81) around the axis of the rod body; second connecting portion (9) include pedestal (91), and the top middle part of pedestal (91) is equipped with fan (1) inside intercommunication, confession mounting hole (92) that body of rod (81) passed, be equipped with on pedestal (91) with spacing portion of bellying (83) looks adaptation.

9. The ultra-low nitrogen burner as claimed in claim 8, wherein the limiting portion comprises an inner cavity (94) disposed on the base body (91) and communicated with the mounting hole (92), a through groove (93) corresponding to the protrusion (83) is disposed on the base body (91) at the edge of the mounting hole (92), an elastic member (96) and a pressing plate (97) connected with each other are disposed in the inner cavity (94), and the pressing plate (97) is in contact with the protrusion (83).

10. An ultra-low nitrogen burner as set forth in claim 8, wherein the rod (81) is screw-connected with a sealing cover (84) located outside the seat (91), and the sealing cover (84) has an edge facing the seat (91) and provided with a sealing ring (85).