GATE BOLTS OF A
NEW TYPE
The disadvantages of
existing bolts (slip with wedge brace element) are:
1. The sealing surfaces of
slip and saddles are not protected from action of a flowing past medium, in a
corollary that happens:
·
pollution
of sealing surfaces;
·
wear
of sealing surfaces by abrasive particles (sinter, grits and other rigid
inclusions), contained in a taking place stream;
·
the
polluted surfaces of saddles and slip reduce probability of their close touch,
what leads to the overcurrent of a medium through formed thinness (chinks) and
intensive wear and tear of touching surfaces, that reduces life expectancy of
the bolt.
2. The construction of bolt
eliminates a possibility to add to the construction thickening elements, which
could increase a reliability of close overlapping of a stream and life
expectancy.
3. The large gains from a
pressure differential on the maximum midsection of slip plus gains of wedging
require large gains of the displacing on a stream and transposition of bolts,
what causes application of the reducer with large gear ratio and extremely low
efficiency and, as a consequence, leads to the use of a drive of large
potencies, inconvenience in maintenance at manual control and insufficient
reliability of work.
4. The construction of bolt
has a rather large hydrodynamic resistance to a stream of a medium.
5. The trivial appearance
of bolts hampers a possibility of deriving of documents on a prototype, able to
provide to the factory - manufacturer monopoly to production.
6. Low patent-protection
and quality of bolts hamper a possibility of export deliverings
From our point of view a
more successful solution of a construction of bolt and its kinematics is
possible to consider a construction of spherical bolt, which we shall accept as
analog for offered variants, by eliminating shortages intrinsic to analog with
preservation and amplification of its positive qualities.
The comparative analysis
indicates the following purposes:
·
increase
of life expectancy of sealing of a stream by a protection of sealing surfaces
from undesirable actions of a commuted medium;
·
increase
of a reliability of sealing by application of self-packing elements;
·
significant
reduction of frictions forces due to the displacing and consequent
transposition of the stop elements;
·
increase
of a reliability of a drive;
·
reduction
of hydrodynamic losses;
·
increase
of manufacturability at the expense of a refusal from a spherical surface of
the stop element;
·
provision
of deriving of documents on a prototype at the expense of an essential and
justified modification of appearance of bolt and it forms;
·
the
patent-protection by registration of the declaring materials on use in a
construction of bolt of the elements of novelty.
As to the application of
antifriction materials, it is necessary to select substitutes of bronze,
fulfilled on the basis of carbon compositions or plastic.
On a problem of application
of the electric drive it is necessary to underline, that a sizeable reduction
of forces of friction between the stop element and its saddle will allow to
reduce gear ratio and to refuse the multistage reducer, by applying single-stage,
that will simplify and reduce the price a construction, will low a potency of
the electric motor.
The solution of the purpose
in hand is explained by the applied kinematic schemes of several variants. After
discussing variants and taking for a basis the most acceptable, we can execute
assembly delineation and delineations of basic knots in the sketches.
The investments make US
$250 thousand, value of the know-how - US $500 thousand, period of a
realization - 1 year, period of repayment - 2,5 years.