RU2091663C1 - Chemical light source - Google Patents

Abstract

FIELD: lighting engineering; chemical light sources. SUBSTANCE: chemical light source consists of transparent polyethylene housing filled with one of reagents of chemiluminescent solution. Glass vial filled with reagent of other solution is placed inside it. Chemical light source may operate under excessive surrounding pressure because housing and vial are provided with compensators relieving effect of outside pressure on their walls. EFFECT: enhanced efficiency. 1 dwg

Description

 The invention relates to chemical light sources (HIS), based on the glow of a chemiluminescent solution, and can be used as emergency lighting under water at objects with normal and high pressure, as well as to identify objects under water.

 Known chemical light sources [1, 2] consisting of a polyethylene cylindrical body and a glass ampoule inside it. The case itself and the ampoule are filled with the components of a chemiluminescent solution. When the HIS polyethylene case is bent, the glass ampoule is destroyed, the components of the solutions are mixed, a chemical reaction occurs, accompanied by chemiluminescent glow.

 This design of HIS is easy to manufacture, use and has a low cost.

A disadvantage of this type of HIS is the inability to use them at elevated environmental pressure, for example, in compartments and lock devices of emergency submarines and under water when performing deep-sea diving operations. The polyethylene housing and the glass ampoule can be made for significant external pressure (up to 30-50 kgf / cm ² ).

 However, at the moment of fracture (during the commissioning of the HIS), the polyethylene housing changes its cylindrical shape (together with the fracture) and under the influence of external pressure loses its tightness.

 Glass ampoules, for high external pressure, have a large wall thickness, which reduces the useful volume of the ampoules, reducing the amount of reagent in the ampoule or in the HIS housing. In addition, thick-walled ampoules are difficult to destroy especially in overalls (gloves or diving equipment), and the fragments formed during the destruction of ampoules can damage the HIS polyethylene case and the diver's hands.

 Known design HIS [3] containing glass ampoules, which does not exclude this drawback.

 The aim of the invention is the creation of a new design of HIS, eliminating the effect of external pressure on the body and ampoule with reagents of chemiluminescent solutions.

 This is achieved by the fact that devices that align the external pressure with the internal pressure are introduced into the design of the body and ampoule. The polyethylene casing at one end has a permeable stop plug, under which there is a piston, and the inner ampoule at one end is sealed with an elastic cap, for example, made of rubber.

 The invention is illustrated in the drawing.

 HIS consists of a polyethylene housing 1 filled with solution 2 from one of the components of the chemiluminescent reaction. The housing has a sealed bottom at one end, and a piston 3 is inserted at the other end, providing tightness along the inner wall of the housing.

 To prevent the piston from leaving the housing, a permeable stop-stop 4 is fixed (screwed, glued, welded) to the latter.

 Inside the housing in solution 2 a glass ampoule 5 sealed at one end is placed. The open end of the ampoule is sealed with an elastic cap 6, for example, of rubber. For reliability of sealing, the cap can be put on glue and benzene 7 is applied on it. Ampoule 5 is filled with solution 8, which is the second component of the chemiluminescent reaction.

 HIS works as follows.

 With increasing environmental pressure, for example, during deep-sea descent of a diver, water, penetrating through the hole in the stopper-stop 4, acts on the piston bottom 3 and the latter, dropping into the housing 1, compresses the air remaining in it when the housing is filled with a solution. As a result, the pressure of the solution inside the body and outside is balanced, the body becomes completely unloaded. A similar process occurs inside the ampoule 5. The elastic rubber cap 6 under the influence of the pressure of the solution 2 bends inward, aligning the pressure in the ampoule 5 with the pressure in the housing 1.

 The ampoule body unloaded from pressure can be made of thin glass.

 To enable HIS, it is enough to bend the polyethylene housing 1 until the thin-walled ampoule 5 is destroyed and mix the chemiluminescent reaction reagents 2 and 8.

 These actions are quite accessible and doable by any person dressed in protective clothing with gloves, for example, a diver in diving equipment.

 The proposed design of HIS eliminates the causes of cracks in the body of the light source and makes it possible to produce a thin-walled body and ampoule for any external pressure, and facilitates its inclusion. In addition, a thin-walled housing reduces light loss.

 As of June 1994, military unit 20914 produced prototypes of HIS, the proposed design, which successfully passed all the tests.

Claims (1)

 A chemical light source containing a transparent polyethylene housing filled with one of the chemiluminescent solution reagents and a glass ampoule inside it with reagents of another solution, characterized in that the outer polyethylene housing has a permeable stop plug at one end, under which there is a piston that provides sealing along the inner surface of the casing, and the inner ampoule is sealed at one end with an elastic cap.