Microwave instrument for measuring thickness of reciprocating grate material layer

Abstract

The utility model relates to household garbage incineration equipment, and aims to provide a microwave instrument for measuring the thickness of a reciprocating grate material layer, and the microwave instrument can accurately monitor the thickness of the material layer in a hearth in real time. According to the technical scheme, the microwave instrument for measuring the thickness of the reciprocating grate material layer comprises a host, a transmitting end and a receiving end, the device is characterized in that the transmitting end and the receiving end are fixed on waste heat boiler steel frames on the two sides through supports in an up-down adjustable mode, and boiler walls on the two sides are further provided with observation windows; the transmitting end, the receiving end and the observation windows on the two sides are arranged in a bilateral symmetry mode. And microwaves emitted by the emitting end sequentially penetrate through the observation window on one side, the hearth material layer and the observation window on the other side and then are received by the receiving end.

Description

Technical Field

[0001] The utility model relates to an incineration device for domestic waste, in particular to a microwave instrument for measuring the thickness of the reciprocating grate material layer in an incinerator. Background Technique

[0002] With the improvement of China's productivity and the development of urbanization, the domestic waste is increasing day by day. The existing landfill method can no longer adapt to the current situation, and incineration power generation has become the mainstream choice. The reciprocating mechanical grate in the technical route of domestic waste incineration power generation has been more and more recognized and occupies the vast majority of the market.

[0003] During the process of burning domestic waste by the reciprocating mechanical grate, the fluctuations of the furnace temperature, furnace flame and primary air pressure change with the change of the thickness of the waste material layer. In order to ensure the stable and controllable combustion of the furnace, the operators need to always master the information of the thickness of the material layer on the reciprocating grate. Although the differential pressure of the grate material layer can be observed to judge the thickness of the material layer, due to many influencing factors of the wind pressure, such as flow rate, temperature, etc., there are difficult-to-quantify deviations in this parameter, and it can generally only be used to reflect the short-term change trend of the material layer and cannot form a proportional relationship with the actual thickness of the grate material layer. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the above background technique and provide a microwave instrument for measuring the thickness of the reciprocating grate material layer, which should be able to monitor the thickness of the material layer inside the furnace in real time and accurately.

[0005] The technical solution of the utility model is as follows:

[0006] A microwave instrument for measuring the thickness of the reciprocating grate material layer includes a main unit, a transmitting end and a receiving end; it is characterized in that: both the transmitting end and the receiving end are fixed on the steel frames of the waste heat boilers on both sides through brackets that can be adjusted up and down, and observation windows are also provided on both sides of the furnace walls; the transmitting end, the receiving end and the observation windows on both sides are arranged symmetrically left and right; the microwave emitted by the transmitting end passes through the observation window on one side, the furnace material layer and the observation window on the other side in sequence and is received by the receiving end.

[0007] The bracket includes a bottom plate fixed to the steel frame of the waste heat boiler, a lifting frame that can be vertically moved and positioned on the bottom plate, and a connecting pipe fixed to the lifting frame; the transmitting end and the receiving end are respectively installed in the connecting pipes of the brackets on both sides.

[0008] The observation window includes a heat-resistant sleeve embedded in the furnace wall, a window body arranged at the outer end of the heat-resistant sleeve, a cooling pipe arranged inside the heat-resistant sleeve for generating a cooling air curtain, and a gas source connected to the cooling pipe through a gas transmission pipe; a number of spray holes are provided on the cooling pipe.

[0009] The form includes an inner flange plate fixed to the outer end of the heat-resistant sleeve, an outer flange plate fixed to the inner flange plate, heat-resistant glass clamped and fixed between the inner flange plate and the outer flange plate, and heat-resistant sealing gaskets provided on both sides of the heat-resistant glass.

[0010] Both the inner flange plate and the outer flange plate are provided with strip-shaped grooves.

[0011] The cooling pipe is fixed to the inner wall of the heat-resistant sleeve and extends along the circumferential direction of the heat-resistant sleeve.

[0012] The beneficial effects of the present utility model are as follows:

[0013] In the present utility model, microwave instruments with adjustable heights are provided on the left and right sides of the furnace chamber of the reciprocating discharging layer of the incinerator. The microwave instruments measure the real-time thickness of the garbage in the material layer in the furnace chamber, effectively reflecting the actual thickness of the material layer inside the furnace chamber and providing reliable operation data for the operators. At the same time, the present utility model can also effectively reduce the ambient temperature of the microwave instruments during operation, avoid the direct contact of the microwave instruments with high temperature, and extend the service life of the microwave instruments. Description of the Drawings

[0014] Figure 1 is the front view structural schematic diagram of the present utility model.

[0015] Figure 2 is the front view structural schematic diagram of the bracket of the present utility model.

[0016] Figure 3 is Figure 2 the rear view structural schematic diagram of

[0017] Figure 4 is the front view structural schematic diagram of the observation window of the present utility model.

[0018] Figure 5 is the right view structural schematic diagram of the observation window of the present utility model.

[0019] Figure 6 is the sectional structural schematic diagram of the heat-resistant sleeve of the present utility model.

[0020] Reference Signs:

[0021] Transmitting end 1, furnace wall 11, waste heat boiler steel frame 12, receiving end 2, observation window 3, bottom plate 4, sliding groove 4-1, bracket fastener 4-2, lifting frame 5, connecting pipe 6, heat-resistant sleeve 7, inner flange plate 8-1, outer flange plate 8-2, heat-resistant glass 8-3, heat-resistant sealing gasket 8-4, form fastener 8-5, cooling pipe 9. Detailed Embodiments

[0022] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] As Figure 1 shown, a microwave instrument for measuring the thickness of the material layer of a reciprocating grate includes a main body, a transmitting end 1, a receiving end 2, a bracket, and an observation window 3. The main body (omitted in the figure) is electrically connected to the transmitting end and the receiving end at the same time.

[0024] As Figure 1 shown, the middle of the reciprocating furnace is the furnace chamber, and both sides of the furnace chamber are furnace walls 11, and the outside of the furnace walls is the waste heat boiler steel frame 12.

[0025] The transmitting end, the receiving end, and the observation windows on both sides are arranged symmetrically left and right on both sides of the furnace chamber. The transmitting end emits microwaves into the furnace chamber. The microwaves first pass through the observation window of one side of the furnace wall, then pass through the material layer inside the furnace chamber, then pass through the observation window of the other side of the furnace wall, and finally are received by the receiving end. The main body can monitor the thickness of the material layer in the furnace chamber in real time by analyzing the change of the received microwaves. The transmitting ends and receiving ends on both sides need to be aligned on a horizontal line to ensure the accuracy of the monitoring signal.

[0026] Both the transmitting end and the receiving end are installed on the waste heat boiler steel frames on both sides through brackets. The height of the transmitting end and the receiving end can be adjusted by using the brackets, so that it has the ability to be appropriately adjusted according to the change of the domestic waste conditions. A certain gap is also reserved between the transmitting end and the receiving end and the furnace wall to prevent the microwave instrument from failing due to overheating.

[0027] As Figure 2 shown, the bracket includes a bottom plate 4, a lifting frame 5, and a connecting pipe 6. The bottom plate is welded to the waste heat boiler steel frame, the lifting frame is vertically movably positioned on the bottom plate, and the connecting pipe is fixed to the lifting frame. Two vertically arranged sliding grooves 4-1 are provided on the bottom plate, and each sliding groove is provided with a bracket fastener 4-2 that can move along the sliding groove. The lifting frame is fixed to the bottom plate through the bracket fastener. The working height of the transmitting end and the receiving end can be adjusted according to the specific working conditions in the furnace chamber to accurately reflect the current thickness of the grate material layer. The bracket fastener is a bolt and a nut.

[0028] As Figure 4As shown in the figure, the observation window includes a heat-resistant sleeve 7, a window body, a cooling pipe 9, and a gas source (omitted in the figure). Through holes are opened in the furnace walls on both sides, and the heat-resistant sleeve is embedded in the through holes and penetrates both sides of the furnace wall. The window body is arranged at the outer end (the end far from the furnace chamber) of the heat-resistant sleeve. A cooling pipe is arranged inside the heat-resistant sleeve and is located on the side close to the window body. The gas source supplies gas to the cooling pipe through a gas transmission pipe to generate a cooling air curtain in the inner cavity of the heat-resistant sleeve.

[0029] As Figure 4 shown in the figure, the window body includes an inner flange plate 8-1, an outer flange plate 8-2, heat-resistant glass 8-3, and heat-resistant sealing gaskets 8-4. The inner flange plate is fixed to the outer end of the heat-resistant sleeve. The outer flange plate is fixed to the inner flange plate through window body fasteners 8-5. The heat-resistant glass is clamped and fixed between the inner flange plate and the outer flange plate. Heat-resistant sealing gaskets are arranged between the inner flange plate and the heat-resistant glass and between the outer flange plate and the heat-resistant glass to prevent the heat-resistant glass from directly contacting the inner flange plate and the outer flange plate and ensure the sealing performance. The window body fasteners are bolts and nuts.

[0030] As Figure 5 shown in the figure, strip-shaped grooves are provided on both the inner flange plate and the outer flange plate to avoid blocking the heat-resistant glass. The positions and sizes of the strip-shaped grooves correspond to the vertical movement trajectories of the transmitting end and the receiving end to ensure that microwaves can pass through unobstructed.

[0031] As Figure 6 shown in the figure, the cooling pipe first passes through the wall of the heat-resistant sleeve and extends into the inner cavity of the heat-resistant sleeve, and then extends along the circumference direction of the heat-resistant sleeve. The cooling pipe is fixed to the inner wall of the heat-resistant sleeve. A number of spray holes are opened in the cooling pipe. Compressed air from the gas source is discharged from the spray holes to form an air curtain in the inner cavity of the heat-resistant sleeve, separating the high temperature inside the furnace chamber from the heat-resistant glass, preventing the heat-resistant glass from failing and breaking due to overheating. At the same time, operators can also observe the working conditions inside the furnace through the observation window.

[0032] The main machine, the transmitting end, and the receiving end are all prior arts.

[0033] The preferred embodiments of the present invention are given in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

Claims

1. A microwave instrument for measuring the thickness of a reciprocating furnace row material layer, comprising a host, a transmitting end, and a receiving end; characterized in that: The transmitting end (1) and the receiving end (2) are both fixed to the waste heat boiler steel frames on both sides through brackets so as to be adjustable up and down, and the furnace walls (11) on both sides are also provided with observation windows (3); the transmitting end and the receiving end and the observation windows on both sides are arranged symmetrically; the microwaves emitted by the transmitting end sequentially pass through the observation window on one side, the furnace material layer, and the observation window on the other side before being received by the receiving end.

2. The microwave instrument for measuring the thickness of a reciprocating grate material layer according to claim 1, characterized in that: The support comprises a bottom plate (4) fixed to a waste heat boiler steel frame (12), a lifting frame (5) vertically movably positioned on the bottom plate, and a connecting pipe (6) fixed to the lifting frame; the transmitting end and the receiving end are respectively installed in the connecting pipes of the supports on both sides.

3. The microwave instrument for measuring the thickness of a reciprocating grate material layer according to claim 2, characterized in that: The observation window comprises a heat-resistant sleeve (7) buried in the furnace wall, a window body arranged at the outer end of the heat-resistant sleeve, a cooling pipe (9) arranged inside the heat-resistant sleeve for generating a cooling air curtain, and an air source connected to the cooling pipe through an air delivery pipe; the cooling pipe is provided with a plurality of spray holes.

4. The microwave instrument for measuring the thickness of a reciprocating grate material layer according to claim 3, characterized in that: The window body comprises an inner flange plate (8-1) fixed to the outer end of the heat-resistant sleeve, an outer flange plate (8-2) fixed to the inner flange plate, a heat-resistant glass (8-3) clamped and fixed between the inner flange plate and the outer flange plate, and heat-resistant sealing gaskets (8-4) arranged on both sides of the heat-resistant glass.

5. The microwave instrument for measuring the thickness of a reciprocating grate material layer according to claim 4, characterized in that: The inner flange plate and the outer flange plate are both provided with strip grooves.

6. The microwave instrument for measuring the thickness of a reciprocating grate material layer according to claim 5, characterized in that: The cooling pipe is fixed to the inner wall of the heat-resistant sleeve and extends along the circumference direction of the heat-resistant sleeve.

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