CN114623254A - High-temperature-resistant corrosion-resistant valve for sampling flue gas and application thereof - Google Patents
High-temperature-resistant corrosion-resistant valve for sampling flue gas and application thereof Download PDFInfo
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- CN114623254A CN114623254A CN202011458382.4A CN202011458382A CN114623254A CN 114623254 A CN114623254 A CN 114623254A CN 202011458382 A CN202011458382 A CN 202011458382A CN 114623254 A CN114623254 A CN 114623254A
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- valve core
- valve
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- sampling
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/062—Construction of housing; Use of materials therefor of taps or cocks with conical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0242—Spindles and actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/025—Particular coverings or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a high-temperature-resistant corrosion-resistant valve for sampling flue gas and application thereof, belonging to the field of environmental pollution analysis and monitoring. The device structure is divided into a valve body, a valve core, a connecting shaft, a spring and a driving element. The contact surface of the valve body and the valve core is of a conical surface structure, the connecting shaft extrudes the contact surface of the valve core and the valve body through a spring, so that sealing is realized, and the on-off or switching of the valve is realized through a driving element. The invention adopts a valve body linkage structure, and the valve body and the valve core are made of high-temperature-resistant and corrosion-resistant materials, thereby ensuring the sealing and the normal use under the conditions of high-temperature environment and corrosive medium.
Description
Technical Field
The invention belongs to the field of environmental pollution analysis and monitoring, and particularly relates to a high-temperature-resistant corrosion-resistant valve for flue gas sampling and application thereof.
Background
The valve for sampling the flue gas in the prior art is in a high-temperature environment for a long time in the process of sampling the flue gas, corrosive media pass through the valve, a common valve cannot be used under the condition, a driving unit cannot resist temperature, the valve body can deform or be corroded, the valve cannot be used, and replacement and maintenance are inconvenient.
Disclosure of Invention
In order to avoid the situation, the invention provides a novel valve body linkage structure, namely a high-temperature-resistant corrosion-resistant valve for flue gas sampling, so as to solve the problem that the valve is deformed at high temperature or corroded by a medium in the flue gas sampling process.
The invention provides a sampling valve for sampling and analyzing target pollutants in a flue, in particular to a high-temperature-resistant corrosion-resistant valve for sampling, analyzing and monitoring dioxin in smoke and dust.
The invention provides a high-temperature-resistant corrosion-resistant valve for sampling flue gas, which comprises a valve body, wherein the valve body consists of a pipe body and a valve core sleeve arranged along the radial direction of the pipe body, the valve core sleeve is of a hollow round table structure, the pipe body is of a hollow round pipe structure, and the intersection of the pipe body and the valve core sleeve is communicated; the valve core sleeve is internally provided with a solid valve core matched with the valve core sleeve, the valve core is provided with a through hole, and the valve core can rotate around a self central shaft in the valve core sleeve to realize the communication or non-communication between the through hole and the pipe body; the surface with the largest radius of the valve core is a bottom surface, the bottom surface of the valve core is connected with one end of a connecting shaft, and the other end of the connecting shaft is connected with a driving element; one end of the tube body is connected with the sampling gun, the other end of the tube body is connected with one end of the enrichment tube (7), and the other end of the enrichment tube is connected with the sampler.
Furthermore, a spring is sleeved on the outer side face of the connecting shaft, a protruding block is arranged at one end, close to the valve core, of the outer side of the connecting shaft, one end of the spring is connected with the driving element, and the other end of the spring is connected with the protruding block.
Furthermore, the connection modes of the connecting shaft and the valve core and the connecting shaft and the driving element comprise groove structure connection, plug pin structure connection or compression connection.
Furthermore, the valve body and the driving element are relatively fixed, the driving element presses the spring towards the valve body side, so that the spring is in contact with the bump to be stressed, and further the bump applies force to the valve core, so that the valve core moves towards the direction of reducing the radius of the valve core sleeve, and the valve core sleeve are sealed; when the valve core and the valve core sleeve are kept in a sealed state, the valve core can rotate around the central axis of the valve core to realize the communication or non-communication between the through hole and the pipe body.
Further, the valve body and the valve core are made of titanium alloy, glass, polytetrafluoroethylene or polyether ether ketone, the connecting shaft is made of titanium alloy or stainless steel, and the driving element comprises a swing cylinder, a stepping motor or a servo motor.
Further, the spring is a compression spring.
Further, an air suction pump is arranged in the sampler.
The invention also provides application of the high-temperature-resistant corrosion-resistant valve for sampling the flue gas in sampling the flue gas.
The valve body and the valve core are positioned in a high-temperature region, the medium passing through the valve body and the valve core is corrosive high-temperature smoke, and high-temperature-resistant and corrosion-resistant materials such as titanium alloy, glass, polytetrafluoroethylene, polyether ether ketone and the like are adopted; the connecting shaft is made of high-temperature-resistant and high-strength materials, such as titanium alloy, stainless steel and the like. The driving element is located in a non-high temperature area, is not resistant to high temperature, and is a device capable of changing the angle of the central shaft, such as a swing cylinder, a stepping motor, a servo motor and the like.
The structure formed by the valve body and the valve core can be a multi-channel structure with two or more than two channels; the connection of the connecting shaft, the valve core and the driving element is a structure which can not generate relative rotation and can be a groove structure, a plug pin structure or a compression structure and the like.
When the high-temperature-resistant corrosion-resistant valve for sampling the flue gas is used: the valve body, the valve core and the sampling gun are arranged in a high-temperature area of the flue, other components are arranged in a non-high-temperature area outside the flue, and a lug on the connecting shaft can partially enter the flue, so that the spring is required to be positioned outside the flue. Starting a driving element and an air suction pump in the sampler, and discharging corrosive high-temperature flue gas into the enrichment pipe through the valve body after the high-temperature flue gas enters the valve body through the sampling gun; the valve core is connected with the driving element through a connecting shaft, is in sealing connection with the valve body under the action of the spring, and realizes the on-off and switching of the valve under the rotation action of the driving element.
The invention has the beneficial effects that: compared with a common valve, the valve adopts a valve body linkage structure, and the valve body and the valve core are made of high-temperature-resistant and corrosion-resistant materials, so that the sealing is ensured, and the normal use under the conditions of high-temperature environment and corrosive medium is also ensured.
Drawings
Fig. 1 is a schematic view of the main structure of a high-temperature-resistant corrosion-resistant valve for sampling flue gas of the present invention.
FIG. 2 is a schematic diagram of a high temperature and corrosion resistant valve for sampling flue gas according to the present invention.
In the figure, 1, a valve body, 1-1, a pipe body, 1-2, a valve core sleeve, 2, a valve core, 3, a connecting shaft, 3-1, a bump, 4, a spring, 5, a driving element, 6, a sampling gun, 7, an enrichment pipe and 8, a sampler are arranged.
Detailed Description
The following non-limiting examples will allow one of ordinary skill in the art to more fully understand the present invention, but are not intended to limit the invention in any way.
Example 1
As shown in fig. 1-2, a high temperature and corrosion resistant valve for sampling flue gas comprises a valve body 1, wherein the valve body 1 comprises a pipe body 1-1 and a valve core sleeve 1-2 arranged along the radial direction of the pipe body 1-1, the valve core sleeve 1-2 is of a hollow round table structure, the pipe body 1-1 is of a hollow round pipe structure, and the intersection of the pipe body 1-1 and the valve core sleeve 1-2 is communicated; the valve core sleeve 1-2 is internally provided with a valve core 2 of a solid structure matched with the valve core sleeve 1-2, the valve core 2 is provided with a through hole, and the valve core 2 can rotate around a self central shaft in the valve core sleeve 1-2 to realize the communication or non-communication between the through hole and the pipe body 1-1; the surface with the largest radius of the valve core 2 is a bottom surface, the bottom surface of the valve core 2 is connected with one end of a connecting shaft 3, and the other end of the connecting shaft 3 is connected with a driving element 5; one end of the pipe body 1-1 is connected with a sampling gun 6, the other end of the pipe body 1-1 is connected with one end of an enrichment pipe 7, and the other end of the enrichment pipe 7 is connected with a sampler 8. A spring 4 is sleeved on the outer side face of the connecting shaft 3, a lug 3-1 is arranged at one end, close to the valve core 2, of the outer side of the connecting shaft 3, one end of the spring 4 is connected with the driving element 5, and the other end of the spring is connected with the lug 3-1. The connection modes of the connecting shaft 3 and the valve core 2 and the connecting shaft 3 and the driving element 5 comprise groove structure connection, bolt structure connection or pressing connection. The valve body 1 and the driving element 5 are relatively fixed, the driving element 5 presses the spring 4 towards the valve body 1 side, so that the spring 4 is in contact with the lug 3-1 to be stressed, and further the lug 3-1 applies force to the valve core 2, so that the valve core 2 moves towards the direction of reducing the radius of the valve core sleeve 1-2, and the valve core 2 is sealed with the valve core sleeve 1-2; when the valve core 2 and the valve core sleeve 1-2 are kept in a sealing state, the valve core 2 can rotate around the central axis of the valve core 2 to realize the communication or non-communication between the through hole and the pipe body 1-1. The valve body 1 and the valve core 2 are made of titanium alloy, glass, polytetrafluoroethylene or polyether ether ketone, the connecting shaft 3 is made of titanium alloy or stainless steel, and the driving element 5 comprises a swing cylinder, a stepping motor or a servo motor. The spring 4 is a compression spring. The sampler 8 is provided with an air pump.
Example 2
When the high-temperature-resistant corrosion-resistant valve for sampling the flue gas is used: the valve body, the valve core and the sampling gun are arranged in a high-temperature area of the flue, other components are arranged in a non-high-temperature area outside the flue, and a lug on the connecting shaft can partially enter the flue, so that the spring is required to be positioned outside the flue. Starting a driving element and an air suction pump in the sampler, and discharging corrosive high-temperature flue gas into the enrichment pipe through the valve body after the high-temperature flue gas enters the valve body through the sampling gun; the valve core is connected with the driving element through a connecting shaft, is in sealing connection with the valve body under the action of the spring, and realizes the on-off and switching of the valve under the rotation action of the driving element.
Claims (8)
1. The high-temperature-resistant corrosion-resistant valve for sampling the flue gas is characterized by comprising a valve body (1), wherein the valve body (1) consists of a pipe body (1-1) and a valve core sleeve (1-2) arranged along the radial direction of the pipe body (1-1), the valve core sleeve (1-2) is of a hollow round table structure, the pipe body (1-1) is of a hollow round pipe structure, and the intersection of the pipe body (1-1) and the valve core sleeve (1-2) is communicated; the valve core sleeve (1-2) is internally provided with a valve core (2) of a solid structure matched with the valve core sleeve (1-2), the valve core (2) is provided with a through hole, and the valve core (2) can rotate around the central axis of the valve core sleeve (1-2) to realize the communication or non-communication between the through hole and the pipe body (1-1); the surface with the largest radius of the valve core (2) is a bottom surface, the bottom surface of the valve core (2) is connected with one end of the connecting shaft (3), and the other end of the connecting shaft (3) is connected with the driving element (5); one end of the pipe body (1-1) is connected with the sampling gun (6), the other end of the pipe body (1-1) is connected with one end of the enrichment pipe (7), and the other end of the enrichment pipe (7) is connected with the sampler (8).
2. The high-temperature-resistant and corrosion-resistant valve for sampling the smoke according to claim 1, wherein a spring (4) is sleeved on the outer side surface of the connecting shaft (3), a convex block (3-1) is arranged at one end, close to the valve core (2), of the outer side of the connecting shaft (3), so that one end of the spring (4) is connected with the driving element (5), and the other end of the spring is connected with the convex block (3-1).
3. The high-temperature-resistant and corrosion-resistant valve for sampling flue gas as recited in claim 1, wherein the connection modes of the connecting shaft (3) and the valve core (2) and the connecting shaft (3) and the driving element (5) comprise groove structure connection, pin structure connection or compression connection.
4. The high-temperature-resistant corrosion-resistant valve for sampling the flue gas according to claim 1, wherein the valve body (1) and the driving element (5) are relatively fixed, the driving element (5) presses the spring (4) towards the side of the valve body (1), the spring (4) is in contact with the bump (3-1) to bear force, and then the bump (3-1) applies force to the valve core (2), so that the valve core (2) moves towards the direction of reducing the radius of the valve core sleeve (1-2), and the valve core (2) is sealed with the valve core sleeve (1-2); when the valve core (2) and the valve core sleeve (1-2) are kept in a sealing state, the valve core (2) can rotate around the central axis of the valve core (2) to realize the communication or non-communication between the through hole and the pipe body (1-1).
5. The high-temperature-resistant and corrosion-resistant valve for sampling the smoke according to claim 1, wherein the valve body (1) and the valve core (2) are made of titanium alloy, glass, polytetrafluoroethylene or polyether ether ketone, the connecting shaft (3) is made of titanium alloy or stainless steel, and the driving element (5) comprises a swing cylinder, a stepping motor or a servo motor.
6. The high temperature and corrosion resistant valve for sampling flue gas according to claim 1, wherein the spring (4) is a compression spring.
7. The high-temperature-resistant and corrosion-resistant valve for sampling the smoke according to claim 1, wherein a suction pump is arranged in the sampler (8).
8. Use of the high temperature and corrosion resistant valve for flue gas sampling according to any one of claims 1 to 7 in flue gas sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458382.4A CN114623254B (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant corrosion-resistant valve for flue gas sampling and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458382.4A CN114623254B (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant corrosion-resistant valve for flue gas sampling and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114623254A true CN114623254A (en) | 2022-06-14 |
| CN114623254B CN114623254B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011458382.4A Active CN114623254B (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant corrosion-resistant valve for flue gas sampling and application thereof |
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| CN208057998U (en) * | 2018-03-02 | 2018-11-06 | 德科隆（无锡）流体控制有限公司 | A kind of high temperature metal sealing plug valve |
| CN109373050A (en) * | 2018-12-25 | 2019-02-22 | 浙江奥新仪表有限公司 | A kind of corrosion-resisting high-performance flow controller |
| CN209229047U (en) * | 2018-12-14 | 2019-08-09 | 中山市金艺金属制品有限公司 | Gas furnace plug valve |
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2020
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114623254B (en) | 2023-09-26 |
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