NOTA: Ver la modificación hecha a la puerta, en http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
About two months ago I found dumped in a landfill (the kind with a big sign "NO LITTERING") a CNG cylinder, little, surely belonging to one of several stolen cars that end up there in flames. With some difficulty I got up it, loaded in the trunk of the car and brought at home. After I put a question on Instructables "What I can do with it?". There were several suggestions, and finally imposed the idea of a salamander, because natural prize gas increased dramatically, and my little shop can be Siberia, without a heater.
NOTE: See modification to the door, in http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
Step 1: Cutting (cortando)
Luego marqué con tinta indeleble la puerta y los agujeros de ambos extremos, y lo llevé a un taller metalúrgico para que lo corten, porque está hecho de acero duro y es imposible para mí poder agujerear los extremos, que tienen casi una pulgada de grosor. Me cobraron bastante el trabajo, pero yo no tenía elección, así que agaché la cabeza y lo pagué.
I drained the little gas containing the tube, removed the valve, filled with water twice and let it dry a few days to eliminate any possibility of explosion.
Then I marked with indelible ink the door and the holes at both ends, and took it to a metal shop to cut, because it is made of hard steel and it is impossible for me to drill the ends, which are nearly an inch thick. They charged me a good deal of money for the work, but I had no choice, so I bowed my head and paid.
Step 2: Emprolijando (tidying up)
I had to fill some gaps left by the torch, but I found it relatively easy using electric welder and a piece of construction iron of 6 mm by way of contribution electrode.
Step 3: Las embocaduras (mouthpieces)
I made two rings of flat iron rod 1"/8, one for output, 3"/4 wide, and one for input, 1"/2 wide. Weld them trying to remain firmly attached to the cylinder body.
Step 4: La parrilla (the grill)
To support the wood, papers and any other fuel to use, I made a round grill that fits well within the cylinder. I made first the round frame and then went welding parallel rods, spaced about 18 mm between them. The rods were in vertical section, it is to say set on edge.
Step 5: El control de flujo de aire (air flow control)
Agregué un contrapeso en el extremo opuesto a la tapa para balancearla, aunque los tornillos que hacen de eje la aprietan lo suficiente como para que quede fija en la posición que yo le asigne. Tuve la precaución de prever el cambio de la tapa metálica, atornillándola en su lugar en vez de soldarla. Y por las dudas el reemplazo fuera una chapa o cerámica de diferente grosor, agregué unas levas que permiten fijarla en el ángulo necesario para que cierre bien.
To regulate combustion, because otherwise the salamander "eats up" in seconds whatever fuel you put in, did a cover of 2 mm sheet iron which can be closed completely. Fastened it in the air inlet, that is to say at the bottom, because I found much easier to do this than to insert a throttle in the upper pipe, where the flames would eventually red hot it, and replacing it will imply a much greater work.
Added a counterweight at the opposite end to the lid to balance it, although the axis bolts are tightened enough to lock it in the position I assigned. I was careful to provide for the exchange of the metal cap, screwing it in place instead of welding. And just in case the replacement was a different thickness metal or ceramic, added fix cams that allow the angle necessary to close it.
Step 6: La puerta (the door)
NOTA: ver http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
Since the cutting of the door left a slot of about 5 mm all around, I was forced to add to the door a frame by way of lips, so that when closed covers the entire opening. I did it with strips of 1"/8 by 3"/4.
NOTE: See http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
Step 7: Las bisagras (the hinges)
I thought improvise hinges, but ultimately favors the time about the cost, and bought two fairly robust hinges, which I soldered in place.
Step 8: La manija (the handle)
Weld a nut to the edge of the door, on which firmly screwed a screw which serves as the axis of the handle. This is a piece of flat iron bar having two nuts welded on one side, which serve as hubs. Then I welded a piece of round rod bent into a hook, which serves to latch the door by a screw which is fixed to a nut welded to the body of the salamander
Step 9: Las patas (legs)
With some leftovers of T iron I made three legs, with flanges on the ends to screw them to the floor.
Step 10: La chimenea (chimney)
I had to choose between buying cast iron pipes, which are much more durable, heavy, expensive, or iron. I chose the latter, with the idea that in a few years if they are bored (and I'm still alive), the problem is easily solved by replacing or repairing the affected part. In addition, to install without help would not be easy. After I did, I congratulated the decision. The chimney is composed of two pieces of 1.63 m, which in its middle part are simply supported one above the other, held in place by a flange which fixes them to the wall.
Step 11: Preparando la primera prueba (preparing first test)
Instalé la salamandra en la pared exterior del taller, para lo cual debí agregar una brida provisoria para sostener el extremo superior de la chimenea.
Because the CNG tube had been painted yellow, I should make the first test in the yard, to avoid my shop be filled with smoke from the burned paint. It was a wise provision, as seen in the photos.
I installed the salamander on the outside wall of the workshop, for which I should add a temporary clamp to hold the upper end of the chimney.
Step 12: Encendiendo la fiera (powering the beast)
De entrada me sorprendió la facilidad con que encendió y cobró intensidad rápidamente el fuego. A los pocos segundos de comenzar, tuve que cerrar la entrada de aire casi totalmente, para mantenerlo dentro de límites normales, dado que por la punta la chimenea salían algunos papeles encendidos.
La pintura comenzó primero a humear y luego a quemarse y caer en escamas. La parte superior fue la última en quemarse.
During the days before I was accumulating all sorts of rubbish fuel, to be able to raise the temperature of the salamander enough to completely burn the paint. Paper, plastic bottles, packaging and wood, useless for other purposes.
At the outset I was surprised how easily it ignited and the fire quickly escalated. Within seconds of starting, I had to shut off the air inlet almost entirely, to keep it within normal limits, because some papers out by the chimney tip.
The painting first began to smolder and then burn out and fall in flakes. The top was the last to burn.
Step 13: Ruge! (it roars!)
La cantidad de ceniza producida fue mucho menor que lo esperado, posiblemente debido a que mucha escapó por la chimenea, para regocijo del vecindario.
A los pocos minutos de haberla encendido, ya se había quemado totalmente la pintura.
At half of the test, I heard a loud enough roar that varied in intensity and tone by moving the air flow regulator. I recorded a video clip to illustrate it. Unfortunately my camera's microphone has a problem because it records at low volume.
The amount of ash produced was much lower than expected, possibly because many ashes escaped through the chimney, to the delight of the neighborhood.
A few minutes after having fired on, it had burned all the paint.
Step 14: Cosm�tica (cosmetics)
Once cooled I slipped a rotating wire brush and painted it with black paint for high temperature. The chimney was treated like that, but instead of brush I used sandpaper and phosphatizant liquid to remove some rust stains.
Step 15: El sombrerete (the bonnet)
With some leftover pieces of galvanized sheet I made the cap, built it with small aluminum rivets.
Step 16: Instalaci�n definitiva (final installation)
I located it in place within the workshop, bore the mezzanine and the roof, thread the pipes, fastened them in place and screwed the legs of the salamander to the floor. To seal the hole in the roof sheet I used silicone, and I have in a few days to reinforce and cover it with foil to protect from the sun.
Step 17: En resumen (conclusion)
Durante el uso normal no la llevaré nunca a una temperatura tan alta como durante la primera prueba, supongo que con encender un pequeño fuego a la mañana y otro a la tarde será suficiente para mantener confortable mi taller. Lo interesante es que el tiraje de la chimenea es muy bueno, lo cual me asegura que no tendré el taller lleno de humo.
Pronto comienza la época de poda, y mi ciudad se llenará de montones de ramas, de las cuales podré obtener leña gratis. Por otra parte, voy a preparar un lugar para seleccionar de los residuos domésticos todo lo que sea combustible.
Futuro: lo siguiente será opcional, dependiendo de las necesidades y posibilidades:
- Esperar el frío y entonces sí, estrenarla con fanfarria, discursos, desfile y alfombra roja.
- Agregar al interior de la puerta una pequeña parrilla redonda desmontable, para usar la salamandra como horno y hacer bollos, carne, fruta, chorizos, etc.
- Soldar en la parte superior una chapa horizontal que sirva como mejora a la disipación del calor y también para apoyar un recipiente para calentar agua.
- Tengo que conseguir una sartén un poco más grande para recoger las cenizas.
During normal use not ever take a temperature as high as during the first test, I guess with lighting a small fire in the morning and another at afternoon will be enough to keep comfortable my shop. The interesting thing is that the circulation of the chimney is very good, which assures me I will not have a smoky workshop.
Soon begins here the time of pruning, and my city will be filled with lots of branches, of which I get free firewood. Moreover, I will prepare a place for household waste selecting whatever is fuel.
Future: The following is optional, depending on the needs and possibilities:
- Expect cold, then yes, release it with fanfare, speeches, parade and red carpet.
- Add into the door a small round detachable grill for use the salamander as oven and make buns, meat, fruit, sausages, etc.
- Weld at the top an horizontal plate to serve as improved heat dissipation and to support a container for heating water.
- I have to get a slightly larger pan to collect the ashes.