ES2660061B1 - Device for measuring the concentration of ammonia gas in a working atmosphere - Google Patents
Device for measuring the concentration of ammonia gas in a working atmosphere Download PDFInfo
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- ES2660061B1 ES2660061B1 ES201631225A ES201631225A ES2660061B1 ES 2660061 B1 ES2660061 B1 ES 2660061B1 ES 201631225 A ES201631225 A ES 201631225A ES 201631225 A ES201631225 A ES 201631225A ES 2660061 B1 ES2660061 B1 ES 2660061B1
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- probe
- measuring
- concentration
- air
- cleaning
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 69
- 239000000523 sample Substances 0.000 claims description 38
- 229910021529 ammonia Inorganic materials 0.000 claims description 30
- 238000004140 cleaning Methods 0.000 claims description 27
- 238000005259 measurement Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 244000144977 poultry Species 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 241000005398 Figaro Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009374 poultry farming Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WJCNZQLZVWNLKY-UHFFFAOYSA-N thiabendazole Chemical compound S1C=NC(C=2NC3=CC=CC=C3N=2)=C1 WJCNZQLZVWNLKY-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010407 vacuum cleaning Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0054—Ammonia
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0068—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a computer specifically programmed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
DISPOSITIVO PARA MEDIR LA CONCENTRACION DE GAS AMONIACO EN DEVICE FOR MEASURING THE CONCENTRATION OF AMMONIA GAS IN
UNA ATMOSFERA DE TRABAJOA WORKING ATMOSPHERE
DESCRIPCIONDESCRIPTION
Campo tecnico de la invencionTechnical field of the invention
La presente invencion se enmarca en el control industrial de atmosferas de trabajo y se relaciona con la medicion de gases en general y particularmente amoniaco, en atmosferas donde existe una concentracion permanente de dicho gas, con aplicacion en general en cualquier sector en el que se trabaje con atmosferas en las que exista una concentracion permanente de amoniaco a monitorizar. Por ejemplo, en el sector agroganadero y especfficamente en la avicultura.The present invention is part of the industrial control of working atmospheres and is related to the measurement of gases in general and particularly ammonia, in atmospheres where there is a permanent concentration of said gas, with application in general in any sector in which work is carried out. with atmospheres in which there is a permanent concentration of ammonia to be monitored. For example, in the farming sector and specifically in poultry farming.
Antecedentes de la invencionBackground of the invention
El estado de la tecnica desde un punto de vista comercial esta conformado por los dispositivos/elementos desarrollados por:The state of the art from a commercial point of view is made up of the devices / elements developed by:
Los fabricantes de sensores electroqufmicos de medicion de amoniaco, como puede ser Nemoto o Figaro. The manufacturers of electrochemical sensors for measurement of ammonia, such as Nemoto or Figaro.
Los fabricantes de equipos de medicion de gases, entre ellos amoniaco, que utilizan los sensores anteriores como elemento base de medida. Se pueden citar como ejemplo a Drager y Testo.The manufacturers of gas measurement equipment, among them ammonia, that use the previous sensors as the base measurement element. You can cite Drager and Testo as an example.
En el caso de los fabricantes de sensores electroqufmicos todos indican que el sensor se encuentra encaminado al sector de la seguridad y la salud humana ya que su utilidad es la deteccion puntual de niveles altos de amoniaco que puedan resultar toxicos o daninos. Cabe destacar las especificaciones tecnicas de Nemoto en las que indican que el sensor posee un agente qufmico activo que se consume en presencia de amoniaco, por lo que la duracion del sensor se reduce fuertemente si se encuentra en contacto con esta sustancia de forma continuada. In the case of the manufacturers of electrochemical sensors, all indicate that the sensor is aimed at the sector of safety and human health since its utility is the timely detection of high levels of ammonia that can be toxic or harmful. Note the technical specifications of Nemoto in which they indicate that the sensor has an active chemical agent that is consumed in the presence of ammonia, so that the duration of the sensor is strongly reduced if it is in contact with this substance continuously.
En lo referente a los fabricantes de equipos de medicion de amoniaco todos ellos se encuentran logicamente dentro del sector de la seguridad y la salud humana. Su funcion es la deteccion de niveles de amoniaco en ambientes en los que no existe de forma habitual y advertir a los portadores del equipo que se encuentran en una zona de riesgo. Es decir, los equipos solamente se encuentran en contacto con este gas cuando existe una fuga o un fallo que provoca su aparicion y nunca realizan una medicion de forma continuada en un ambiente con una permanente concentracion de amoniaco.With regard to ammonia measuring equipment manufacturers, all of them are logically within the sector of safety and human health. Its function is the detection of ammonia levels in environments where it does not exist on a regular basis and to warn the equipment bearers that they are in a risk zone. That is, the equipment is only in contact with this gas when there is a leak or failure that causes its appearance and never perform a measurement continuously in an environment with a permanent concentration of ammonia.
Por otro lado los problemas en la utilizacion de estos tipos de sensores para la medicion en ambientes con continuada exposicion a amoniaco y en particular en explotaciones avfcolas se mencionan en el artfculo cientffico "Method for Measuring Ammonia Emissions from Poultry Houses, Poultry Science Association, 2005” en el que se indica que los sensores electroqufmicos se saturan debido a la continua exposicion a atmosferas cargadas de amoniaco. Por su parte en la patente EP2860524 se indica nuevamente la problematica de una medicion prolongada en el tiempo en una atmosfera con exposicion continuada a amoniaco, en particular en establos de animales, y se propone como solucion la utilizacion de un filtro retenedor de amoniaco que se utilizara de forma combinada con la medicion del aire sin pasar por dicho filtro.On the other hand the problems in the use of these types of sensors for measurement in environments with continued exposure to ammonia and in particular in aviaries are mentioned in the scientific article "Method for Measuring Ammonia Emissions from Poultry Houses, Poultry Science Association, 2005 "In which it is indicated that the electrochemical sensors are saturated due to continuous exposure to ammonia-laden atmospheres." For its part, patent EP2860524 again indicates the problem of a prolonged measurement in time in an atmosphere with continuous exposure to ammonia. , in particular in animal stables, and the use of an ammonia retainer filter that is used in combination with the measurement of the air without going through said filter is proposed as a solution.
En resumen el estado de la tecnica pone de manifiesto que los sensores electroqufmicos para la medicion de amoniaco estan disenados para la medicion puntual de la presencia de dicho gas y no son utiles para la medicion continuada en ambientes con exposicion permanente, como por ejemplo pueden ser los recintos de produccion ganadera. In summary, the state of the art reveals that the electrochemical sensors for the measurement of ammonia are designed for the precise measurement of the presence of said gas and are not useful for continuous measurement in environments with permanent exposure, such as, for example, the premises of livestock production.
Breve descripcion de la invencionBrief description of the invention
La invencion se refiere a un dispositivo que resuelve las limitaciones observadas en el estado de la tecnica. Incorpora una sonda preferiblemente electroqufmica para la medicion de amoniaco de forma continuada y repetida. Es por tanto de especial aplicacion en atmosferas de trabajo en las que existe una presencia permanente de dicho gas en concentraciones variables. The invention relates to a device that solves the limitations observed in the state of the art. It incorporates a preferably electrochemical probe for the measurement of ammonia in a continuous and repeated manner. It is therefore of special application in work atmospheres in which there is a permanent presence of said gas in variable concentrations.
El dispositivo objeto de la presente invencion mide la concentracion de amoniaco en una atmosfera de trabajo e incluye una sonda para medir la concentracion de amoniaco en aire, un receptaculo que aloja la sonda y que dispone una apertura para recibir el aire procedente de la atmosfera de trabajo. El dispositivo incluye ademas una unidad de limpieza para limpiar la sonda mediante la depuracion del aire del receptaculo y una unidad de control para alternadamente registrar una medicion de la sonda durante un intervalo de medicion y para activar la unidad de limpieza durante un intervalo de limpieza. De esta manera, se restablecen las condiciones para que la sonda se regenere y vuelva a medir correctamente. The device object of the present invention measures the concentration of ammonia in a working atmosphere and includes a probe to measure the concentration of ammonia in air, a receptacle that houses the probe and which has an opening to receive air from the atmosphere of work. The device further includes a cleaning unit for cleaning the probe by purging the air from the receptacle and a control unit for alternately recording a measurement of the probe during a measurement interval and for activating the cleaning unit during a cleaning interval. In this way, conditions are restored for the probe to regenerate and re-measure correctly.
Uno de los principios de trabajo es por tanto la combinacion de un ciclo de medida en la que la sonda se encuentra en contacto con el amoniaco y un ciclo en el que la sonda se encuentra en contacto con aire sin contenido de amoniaco y que permite su limpieza. En el primer ciclo la sonda realiza la toma de datos de la atmosfera y en el segundo no la lleva a cabo.One of the working principles is therefore the combination of a measuring cycle in which the probe is in contact with the ammonia and a cycle in which the probe is in contact with air without ammonia content and which allows its cleaning. In the first cycle the probe performs the data collection of the atmosphere and in the second it does not carry it out.
Ventajosamente, estos intervalos o ciclos se realizan sin tener que transportar la sonda fuera del ambiente de medicion para su limpieza y se pueden distinguir varias situaciones:Advantageously, these intervals or cycles are carried out without having to transport the probe outside the measurement environment for cleaning and several situations can be distinguished:
- El intervalo de limpieza de la sonda se lleva a cabo por la entrada directa de aire exterior al recinto de medida a traves de una conduccion y provocando su entrada mediante ventilacion forzada. - The interval of cleaning of the probe is carried out by the direct entry of outside air to the measuring enclosure through a conduction and causing its entry by forced ventilation.
- El intervalo de limpieza de la sonda se lleva a cabo mediante la accion de cartuchos de aire comprimido incorporados en el equipo.- The interval of cleaning of the probe is carried out by the action of compressed air cartridges incorporated in the equipment.
- El intervalo de limpieza de la sonda se lleva a cabo realizando vacfo alrededor del sensor. - The cleaning interval of the probe is carried out by vaccum around the sensor.
Ademas las soluciones anteriores no son excluyentes y pueden ser combinadas entre si segun las necesidades de limpieza originadas por la variacion en las concentraciones de amoniaco del ambiente.In addition, the above solutions are not exclusive and can be combined with each other according to the cleaning needs caused by the variation in ammonia concentrations in the environment.
En todas las situaciones descritas con la unidad de control se puede definir y modificar la duracion de los intervalos de limpieza y de medida asf como su cadencia. In all the situations described with the control unit it is possible to define and modify the duration of the cleaning and measuring intervals as well as their cadence.
Breve descripcion de las figurasBrief description of the figures
En la FIG. 1 se describe la composicion de elementos del equipo de medicion con regeneracion de la sonda mediante entrada aire exterior sin amoniaco. En la FIG. 2 se describe la composicion del equipo con utilizacion de cartuchos de aire a presion como medio de regeneracion de la sonda.In FIG. 1 describes the composition of elements of the measurement equipment with regeneration of the probe by means of an outside air inlet without ammonia. In FIG. 2 describes the composition of the equipment with the use of pressurized air cartridges as a means of regenerating the probe.
En la FIG. 3 se describe la composicion del equipo con utilizacion de vacfo como medio de regeneracion de la sonda.In FIG. 3 describes the composition of the equipment with the use of vacuum as a means of regenerating the probe.
Descripcion detallada de la invencionDetailed description of the invention
Con referencia a las figuras anteriores, se describen varias realizaciones de la invencion en mayor detalle y sin caracter limitante. En ellas se puede apreciar los flujos de aire limpio representados mediante la flecha punteada y el flujo de aire con amoniaco mediante la flecha rayada. Las lfneas punteadas indican una interaccion entre elementos.With reference to the previous figures, various embodiments of the invention are described in greater detail and without limiting character. In them you can see the flows of clean air represented by the dotted arrow and the flow of air with ammonia through the striped arrow. Dotted lines indicate an interaction between elements.
La FIG. 1 muestra un dispositivo 10 que incorpora una sonda 12 en un receptaculo 20 y una unidad de limpieza 24 que implementa un mecanismo de limpieza por aire limpio del exterior. La regeneracion de la sonda 12 se realiza mediante la introduccion de aire exterior limpio. Para ello la unidad de control 14 comanda una electrovalvula 16 y un ventilador 18 que acciona conjuntamente. FIG. 1 shows a device 10 incorporating a probe 12 in a receptacle 20 and a cleaning unit 24 that implements a cleaning mechanism by clean air from the outside. The regeneration of the probe 12 is carried out by the introduction of clean external air. For this, the control unit 14 commands an electrovalve 16 and a fan 18 which act together.
Una vez dada la orden de apertura a la electrovalvula 16, el ventilador 18 fuerza la entrada de aire limpio que desplaza el aire con amoniaco que rodea a la sonda 12 . Once the opening command to the electrovalve 16 is given , the fan 18 forces the entrance of clean air that displaces the air with ammonia surrounding the probe 12 .
Cuando se da la orden contraria la electrovalvula 16 se cierra, el ventilador 18 se detiene y no entra aire limpio del exterior. En este momento, se produce a traves de un orificio 11 la entrada de forma natural del aire con amoniaco en el receptaculo 20 en el que se encuentra la sonda 12 y se realiza la medicion. When the opposite order is given, the electrovalve 16 closes, the fan 18 stops and no clean air comes in from the outside. At this time, the entrance of the air with ammonia into the receptacle 20 in which the probe 12 is located and measurement is carried out through a hole 11 .
La FIG. 2 muestra un dispositivo 10 que incorpora una sonda 12 en un receptaculo 20 y una unidad de limpieza 24 con un mecanismo de limpieza por aire comprimido. La regeneracion de la sonda se realiza mediante la introduccion de aire comprimido limpio procedente de un conjunto de cartuchos 22. Para ello la unidad de control 14 comanda la apertura/cierre de dichos cartuchos 22. FIG. 2 shows a device 10 incorporating a probe 12 in a receptacle 20 and a cleaning unit 24 with a mechanism for cleaning by compressed air. The regeneration of the probe is done through the introduction of clean compressed air from a set of cartridges 22. For this, the control unit 14 commands the opening / closing of said cartridges 22.
Una vez dada la orden de apertura de los cartuchos 22 se introduce aire comprimido en el receptaculo 20 de la sonda 12 desplazando el aire con amoniaco.Once the order for the opening of the cartridges 22 is given, compressed air is introduced into the receptacle 20 of the probe 12, displacing the air with ammonia.
Cuando finaliza la limpieza, se produce la entrada del aire con amoniaco de forma natural a traves de un orificio 11 y se realiza su medida.When the cleaning is finished, the air with ammonia is naturally admitted through an orifice 11 and measured.
En esta realizacion, los cartuchos 22 de aire comprimido son un consumible que deben ser renovados periodicamente. In this embodiment, the compressed air cartridges 22 are a consumable that must be periodically renewed.
La FIG. 3 muestra un dispositivo 10 que incorpora una sonda 12 y una unidad de limpieza 24 con un mecanismo de limpieza mediante vacfo. La regeneracion de la sonda 12 de amoniaco se lleva a cabo mediante la aplicacion de vacfo en el receptaculo 20 en el que se aloja dicha sonda 12. Para ello la unidad de control 14 comanda la puesta en marcha/paro de un ventilador de vacfo 19 que puede ser o no reversible. Este ventilador de vacfo 19 debe asegurar la estanqueidad del receptaculo 20 para permitir la realizacion de dicho vacfo. El ventilador de vacfo 19 se acopla al receptaculo 20 en el que se aloja la sonda 12 sin afectar la estanqueidad del mismo.FIG. 3 shows a device 10 incorporating a probe 12 and a cleaning unit 24 with a vacuum cleaning mechanism. The regeneration of the ammonia probe 12 is carried out by applying vacuum to the receptacle 20 in which said probe 12 is housed. For this, the control unit 14 commands the start / stop of a vacuum fan 19 which may or may not be reversible. This vacuum fan 19 must ensure the tightness of receptacle 20 to allow the realization of said vacuum. The vacuum fan 19 is coupled to the receptacle 20 in which the probe 12 is housed without affecting the sealing thereof.
Una vez el ventilador de vacfo 19 entra en funcionamiento extrae el aire que rodea a la sonda 12 de amoniaco dejando esta de estar en contacto con dicho gas. Once the vacuum fan 19 comes into operation, it extracts the air that surrounds the ammonia probe 12, leaving it to be in contact with said gas.
Cuando el ventilador de vacfo 19 se para o gira en sentido contrario se produce la entrada del aire con amoniaco y con ello la medida.When the vacuum fan 19 stops or rotates in the opposite direction, the air intake with ammonia and thus the measurement occurs.
Aunque se ha descrito individualmente, las realizaciones anteriores son compatibles entre si. Por ejemplo, si no se considera suficiente para una sonda la accion de limpieza mediante la entrada de aire exterior se puede adicionar aire a presion y/o vacfo. Although described individually, the above embodiments are compatible with each other. For example, if the cleaning action is not considered sufficient for a probe by means of the outside air inlet, pressure and / or vacuum air may be added.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201631225A ES2660061B1 (en) | 2016-09-20 | 2016-09-20 | Device for measuring the concentration of ammonia gas in a working atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201631225A ES2660061B1 (en) | 2016-09-20 | 2016-09-20 | Device for measuring the concentration of ammonia gas in a working atmosphere |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2660061A1 ES2660061A1 (en) | 2018-03-20 |
| ES2660061B1 true ES2660061B1 (en) | 2019-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201631225A Active ES2660061B1 (en) | 2016-09-20 | 2016-09-20 | Device for measuring the concentration of ammonia gas in a working atmosphere |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8152991B2 (en) * | 2005-10-27 | 2012-04-10 | Nanomix, Inc. | Ammonia nanosensors, and environmental control system |
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2016
- 2016-09-20 ES ES201631225A patent/ES2660061B1/en active Active
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| Publication number | Publication date |
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| ES2660061A1 (en) | 2018-03-20 |
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