CN216174987U - Purging anti-blocking device for gasification furnace - Google Patents
Purging anti-blocking device for gasification furnace Download PDFInfo
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- CN216174987U CN216174987U CN202122559696.XU CN202122559696U CN216174987U CN 216174987 U CN216174987 U CN 216174987U CN 202122559696 U CN202122559696 U CN 202122559696U CN 216174987 U CN216174987 U CN 216174987U
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Abstract
The utility model relates to the field of industrial gas pressure detection, in particular to a purging anti-blocking device for a gasification furnace. The device comprises a high-temperature gate valve, a back-blowing air source pipe, a pressure reducing valve, a float flowmeter, an ash accumulation tank, a blowdown ball valve, a pressure guide pipe and a needle valve. The nitrogen gas passes through a pressure reducing valve and a float flowmeter to obtain low-pressure and stable nitrogen gas, the nitrogen gas enters a pressure guide pipe and meets the detected medium gas, and the gas part in the detected gas flows upwards through an ash deposition tank; and the dust part in the detected coal gas is deposited downwards, so that the pipeline blockage is effectively avoided, and the accumulated dust is discharged by opening a drain valve below the dust accumulation tank. The utility model utilizes the nitrogen source of the system, does not need additional energy consumption, has the outstanding characteristics of simple structure, simple and easy installation, small occupied area of the device, no special maintenance and the like, and belongs to the blowing anti-blocking device with simple structure, convenient and easy operation, low cost, environmental protection and low consumption.
Description
Technical Field
The utility model relates to the field of industrial gas pressure detection, in particular to a purging anti-blocking device for a gasification furnace.
Background
As is well known, in order to ensure the normal operation of a coal-fired boiler, the negative pressure of a hearth needs to be monitored at any time, so that a wind pressure measuring device with a sampling head is arranged on the coal-fired boiler. Because the fuel used by the coal-fired boiler is pulverized coal, the pulverized coal can be gathered at the pipe orifice of the sampling head after a long time to block the pipe orifice, so that the measurement result is influenced, particularly, when the boiler is in positive combustion pressure, impurities such as dust in the boiler and the like can enter the sampling pipe under the action of the pressure of a hearth, so that the sampling pipe is seriously blocked, the continuous measurement of the pressure is influenced, and the serious hidden danger is brought to the safe operation of the boiler; in addition, because the coal-fired boiler gas has a large dust content, the sampling pipe is frequently blocked due to the pipe orifice, the production is seriously influenced, the operator is required to frequently perform pollution discharge treatment on the inlet, and because the discharged gas dust still contains gas, the direct discharge not only causes environmental pollution, but also has the danger of poisoning the operator by the gas. Therefore, the problems of blockage of the sampling pipe orifice and environmental-friendly and harmless dust discharge need to be solved.
In the industrial gas pressure detection field, about preventing stifled pressure taking device patent more, wherein application number CN201921842067.4, application date 2019.10.2 name "a utility model application for measuring boiler pressure take pressure to sweep device" discloses to take pressure to sweep gas and sweep the device that the socle portion has the deashing pipe through gas-water separator and flow controller, has solved the sample mouth of pipe and has blockked up and the blowdown problem. However, this pressure-measuring purging tube device has the disadvantages of more complicated operation process, strict requirements on structure, more required equipment, higher process and installation cost.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems of strict equipment structure requirement, complex flow, high process and installation cost and the like in the prior art, the utility model provides the blowing anti-blocking device for the gasification furnace, which has the advantages of simple structure, simple installation, simple and convenient operation and low process cost.
2. Technical scheme
The purpose of the utility model is realized by the following technical scheme:
a blowing anti-blocking device for a gasification furnace comprises a high-temperature gate valve, a back-blowing air source pipe, a pressure reducing valve, a float flowmeter, an ash accumulation tank and a pressure guide pipe; the pressure pipe communicate the lateral wall of pipeline and the lateral wall of deposition jar, the high temperature gate valve set up on the pressure pipe, blowback source pipe communicate the pressure pipe and set up between high temperature gate valve and deposition jar, the relief pressure valve connects gradually and sets up on blowback source pipe with the float flowmeter.
Furthermore, the instrument anti-blocking sweeping device further comprises a needle valve, and the needle valve is arranged at the upper part of the dust collecting tank.
Furthermore, the device also comprises a sewage ball valve which is arranged at the lower part of the ash deposition tank.
Furthermore, the other end of the back-blowing air source pipe is connected with an external air transmission system and blows corresponding air.
Further, the gas to be externally blown is nitrogen.
Furthermore, the dust accumulation tank is also provided with a dust detection device for detecting the dust content.
Furthermore, the dust detection device is connected with an external system.
Furthermore, the blowdown ball valve is manually or automatically controlled.
Furthermore, when the blowdown ball valve is automatically controlled, the blowdown ball valve is controlled to be opened and closed by being connected with an external system.
Advantageous effects
Compared with the prior art, the utility model has the advantages that:
the blowing anti-blocking device introduces a back blowing air source pipe in a pipeline structure and is communicated with a pressure guide pipe and a pipeline. And a pressure reducing valve and a float flowmeter are arranged on the back-blowing gas source pipe, and back-blowing nitrogen passes through the pressure reducing valve and the float flowmeter to obtain low-pressure and stable nitrogen which is mixed with the gas to be measured in the pipeline. The device structure is simpler.
An ash deposition tank is arranged in the blowing anti-blocking device, a needle valve is arranged above the ash deposition tank, and a sewage ball valve is arranged below the ash deposition tank. The mixed gas to be detected in the pressure guide pipe is blocked in the dust accumulation tank, and dust in the mixed gas is precipitated and gathered in a pollution discharge ball valve below the dust accumulation tank; the mixed gas sinks due to the separation of dust to be purified and flows out of the pressure guide pipe and the dust accumulation tank, and reaches the detection instrument transmitter outside the device through the stop valve, so that the device can achieve the effect of automatically separating the mixed gas from the precipitate in the device, does not need additional operation, and is low in cost.
A blowdown ball valve is arranged below an ash accumulation tank in the blowing anti-blocking device. In normal production use, the blowdown ball valve is in the closure state, and only when the dust in the deposition jar reachd certain quantity, the blowdown ball valve of opening deposition jar below can discharge the dust, waits to close the blowdown ball valve after the dust is discharged, and its device is more for health environmental protection and easy operation.
In conclusion, the utility model does not need extra nitrogen source, has no problems of complex system and large installation workload, has no outstanding characteristics of adding any additional measurement error, occupying small device area and needing no special maintenance,
belongs to a blowing anti-blocking device with simple structure, convenient and easy operation, low cost, environmental protection and low consumption.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Description of reference numerals:
1. a high temperature gate valve; 2. a back-blowing air source pipe; 3. a pressure reducing valve; 4. a float flow meter; 5. an ash accumulation tank; 6. a blowdown ball valve; 7. a pressure guide pipe; 8. a needle valve.
Detailed Description
The utility model is described in detail below with reference to the drawings and specific examples.
Example 1
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in figure 1, the device comprises a high-temperature gate valve 1, a back-blowing air source pipe 2, a pressure reducing valve 3, a float flowmeter 4, an ash deposition tank 5, a pressure guide pipe 7, a blowdown ball valve 6 and a needle valve 8. Wherein, the pressure guide pipe 7 is communicated with the side wall of the pipeline and the side wall of the dust deposition tank 5; the high-temperature gate valve 1 is arranged on the pressure guide pipe 7; the pressure reducing valve 3 and the float flowmeter 4 are sequentially connected and arranged on the back flushing air source pipe 2; the back-blowing air source pipe 2 is communicated with the pressure guide pipe 7 and is arranged between the high-temperature gate valve 1 and the dust deposition tank 5; the upper part of the ash accumulation tank 5 is provided with a needle valve 8, and the lower part of the ash accumulation tank 5 is provided with a sewage ball valve 6.
As shown in figure 1, a meter is arranged between a high-temperature gate valve 1 and a needle valve 8 and connected as a core part of the purging anti-blocking device. The other end of the back-blowing air source pipe is connected with an external air transmission system and blows in corresponding air. The gas blown in from the outside may be nitrogen. Nitrogen is stable and readily available.
And after the back-blowing nitrogen passes through a pressure reducing valve 3 and a float flowmeter 4 arranged in the back-blowing gas source pipe 2, low-pressure and stable nitrogen is obtained in the pressure guide pipe. The low-pressure and stable nitrogen meets the detected medium coal gas in the pressure guide pipe 7, and the gas in the detected coal gas flows out upwards when passing through the ash accumulation tank 5 due to the physical characteristics of the gas; and the dust part in the detected gas is deposited downwards due to the self gravity. Therefore, clean gas to be detected flows out of the dust tank 5 and reaches the instrumentation transmitter through the pressure pipe 7 and the stop valve 8, and dust is deposited in the dust tank 5.
The dust deposition tank 5 is also provided with a dust detection device for detecting the dust content. The dust detection device is connected with an external system. In the normal production and use process, the blowdown ball valve 6 below the dust accumulation tank 5 is in a closed state, when the dust content in the dust accumulation tank 5 reaches a certain degree, the blowdown ball valve 6 below the dust accumulation tank 5 is opened to discharge dust, and the blowdown ball valve 6 is closed after the dust is discharged. The blowdown ball valve 6 is manually or automatically controlled. When the blowdown ball valve 6 is automatically controlled, the blowdown ball valve is controlled to be opened and closed by being connected with an external system. The anti-blocking device is suitable for pressure measurement of the large dust position in the gasification furnace hearth micro-positive pressure or pipeline, and can prevent the sampling head from blocking due to blowing, so that ash removal of the instrument is prevented from blocking, and the accuracy of instrument measurement is improved.
The above description is only a preferred embodiment of the present invention, but the 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 disclosed herein should be covered within the scope of the present invention, and therefore the scope of the present invention should be subject to the protection scope of the claims.
Claims (9)
1. A blowing anti-blocking device for a gasification furnace is characterized by comprising a high-temperature gate valve (1), a back-blowing air source pipe (2), a pressure reducing valve (3), a float flowmeter (4), an ash accumulation tank (5) and a pressure guide pipe (7); pressure pipe (7) intercommunication pipeline's lateral wall and the lateral wall of deposition jar (5), high temperature gate valve (1) set up on pressure pipe (7), blowback air source pipe (2) intercommunication pressure pipe (7) and set up between high temperature gate valve (1) and deposition jar (5), relief pressure valve (3) and float flowmeter (4) connect gradually and set up on blowback air source pipe (2).
2. The blowing and anti-blocking device for the gasification furnace according to claim 1, further comprising a needle valve (8), wherein the needle valve (8) is disposed on the upper portion of the ash accumulation tank (5).
3. A blowing anti-blocking device for a gasification furnace according to claim 1, further comprising a blow-off ball valve (6), wherein the blow-off ball valve (6) is arranged at the lower part of the ash deposition tank (5).
4. The blowing and anti-blocking device for the gasification furnace as claimed in claim 1, wherein the other end of the blowback gas source pipe (2) is connected with an external gas transmission system and blows in corresponding gas.
5. A blowing and anti-blocking device for a gasification furnace according to claim 4, wherein the gas blown in from outside is nitrogen.
6. The blowing and anti-blocking device for the gasification furnace as claimed in claim 1, wherein the dust tank (5) is further provided with a dust detection device for detecting the dust content.
7. A blowing and anti-blocking device for a gasification furnace according to claim 6, wherein the dust detection device is connected with an external system.
8. A blowing anti-blocking device for a gasification furnace according to claim 3, characterized in that the blow-off ball valve (6) is manually or automatically controlled.
9. A blowing anti-blocking device for a gasification furnace according to claim 3, characterized in that when the blowdown ball valve (6) is automatically controlled, the opening and closing of the blowdown ball valve (6) is controlled by connecting with an external system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122559696.XU CN216174987U (en) | 2021-10-22 | 2021-10-22 | Purging anti-blocking device for gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122559696.XU CN216174987U (en) | 2021-10-22 | 2021-10-22 | Purging anti-blocking device for gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216174987U true CN216174987U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122559696.XU Active CN216174987U (en) | 2021-10-22 | 2021-10-22 | Purging anti-blocking device for gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216174987U (en) |
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2021
- 2021-10-22 CN CN202122559696.XU patent/CN216174987U/en active Active
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