FR2604770A1 - CONNECTING DEVICES FOR FLUIDS - Google Patents

Abstract

THE INVENTION CONCERNS A CONNECTION DEVICE SUBJECT TO A PRESSURE OF A FLUID, INCLUDING A THREADED ELEMENT 10 INTENDED TO BE COUPLING BY SCREWING WITH AN ADDITIONAL ELEMENT, AND A FLUID PASS THROUGH IT. AT LEAST PART OF THE FLUID PASSAGE IS COMPLIED FOR COUPLING WITH A GUIDING MEANS AND IS, FOR EXAMPLE, IN THE FORM OF A HEXAGONAL SLEEVE 16, THE CONNECTION DEVICE CAN THUS BE GUIDED TO COME TO S ' PAIR WITH THE ADDITIONAL ELEMENT WHICH CAN BE A DISTRIBUTION BLOCK. THE DEVICE PREFERABLY INCLUDES A SMOOTH CYLINDRICAL ELEMENT 12 MOBILE IN ROTATION RELATIVE TO THE ELEMENT 10 AND SUITABLE TO BE CONNECTED TO ANOTHER ELEMENT, SUCH AS A PIPE ASSEMBLY.

Description

Connection devices for fluids.

  The present invention relates to connection devices.

  dement. In hydraulic fluid regulation systems, a common practice is to group on a single distribution block

  a number of connections, such as pipe connections.

  For example, each of the pipes can be connected using a sleeve

  screwed at both ends, one of which is screwed into the distribution block

  bution and the other in the pipe. Although it is possible to screw a

  pipe directly in the block, continuous connection and disconnection

  , often necessary, cause wear and deterioration of the internal thread of the block, which results in replacement

  expensive of the block, therefore sleeve type connections are preferred.

  Nowadays, we even tend to replace the sleeves

  seated at both ends by so-called locking jumper fittings. The connector has a screwed part for coupling with a distribution block, but its other end is locked on a

  pipe by means of a jumper which passes through holes in the fitting and penetrates

  be in a groove on the end of the pipe assembly.

  In the sleeve fittings screwed at both ends of the same

  me that in the locking jumper connections, a means must be provided

  to tighten the screwed part of the fittings in a leak-free coupling

  with the distribution block. This means usually takes the form of a hexagonal part provided on the connector for coupling with a

key.

  In order to have access to the hexagonal part with a key, the fittings must be spaced apart from each other by a distance such that the external parts of the key jaws do not strike adjacent fittings or other elements. of the whole, and the

  providing this spacing to allow access to a key will work

  often results in a larger distribution block size than it

  is strictly necessary to interconnect the hydraulic hoses

  ques which lead to this one. In confined spaces and when access to a distribution block is limited, such as in

  roofs of mines, the fact of providing a large distribution block

  load-bearing is both expensive and inconvenient for the execution of a job -2 involving the connection and disconnection of connections using

of a key.

  An object of the present invention is to solve the above problems relating to the use of keys, and to reduce the cost of distribution blocks which may need to be manufactured from non-ferrous or ixoxidizable steels, in the fire retardant fluids,

  such as water or other corrosive fluids.

  Consequently, the present invention provides a device for

  connection subjected to fluid pressure, comprising a flexible element

  flatness intended to be coupled by screwing with an additional element, and a fluid passage passing through it, at least part of said fluid passage being shaped for coupling with a guide means,

  the connection device can thus be guided to come to act

  to couple with said complementary element.

  Said shaped part for coupling with the means

  guide may be in the form of a cross section

tapered, hexagonal or square.

  The transverse distance between the dishes of said hexagon or square

  may be less than the width of the remaining part of the fluid passage.

  As a variant, said transverse distance between the dishes may be greater than the width of the remaining part of said fluid passage. At its end opposite the threaded element, the connection device may comprise a smooth cylindrical element having at at least one hole arranged at right angles to its axis, in order to receive a retaining device intended for another complementary element. The smooth cylindrical element of the connection device can be able to rotate relative to said fluid passage, in which case another smooth cylindrical element can be provided for coupling

  waterproof with the other complementary element.

  The other complementary element may include a pipe connection. In order to ensure a fluid tight seal between the threaded element and the first additional element mentioned, a sealing compound, such as "Loctite", can be used between the threaded parts -3 conjugate.

  Alternatively or additionally, a trough can be made

  ge to receive an O-ring arranged on a coupling face

  be the connection device and the first additional element mentioned.

  The present invention comprises a distribution block and more

  several assemblies forming pipes connected thereto by means of several connection devices as defined above, the devices

  of connection being substantially contiguous to each other.

  The above, as well as other purposes, advantages, and characteristics

  of the present invention, will appear more clearly on reading

  ture of the following detailed description of a specific embodiment

  fique of the invention, given by way of nonlimiting example in re-

  reference to the accompanying drawings in which: Figure 1 is a side cross-sectional view of an embodiment of a connection device according to the invention; Figure 2 is a view taken in the direction of arrow II in Figure 1; Figure 3 is a view taken in the direction of arrow III of Figure 1; Figure 4 is a view similar to that of Figure 1, but showing the connection device connected to a distribution block and a pipe assembly; and Figure 5 is a view taken in the direction of the

  arrow V in Figure 4 and showing a retaining means for the provision

connection sitive.

  Referring firstly to Figures 1 to 3, the connection device comprises a first element 10 provided with an external thread 11 and a second smooth cylindrical element 12, capable of rotating relative to the element 10, the two elements being interconnected by a flange 13

  crimped or pressed to fit a certain clearance in a groove 14.

  The element 10 has a smooth internal bore 15, a sleeve 16 of hexagonal shape, a sealing end face 17 and a recess of

O-ring 18.

  The smooth cylindrical element 12 has an internal bore 19 -4- and two transverse holes 20, 21 which extend tangentially by

  relative to bore 19 and extend into it.

  The connection device is intended to be used to connect a hose assembly 22 (see Figure 4) to a distribution block 23. The distribution block has, formed in it, a passage 24 which

  ends with an internally threaded sleeve 25 of a size suitable for fitting

  juguer with the thread 11 of the element 10. By placing an O-ring 26 in the hollow 18 and by screwing the element 10 in the sleeve 25 until the sealing end face 17 comes into abutment against the bottom of the sleeve, it is possible to make the element 10 tight vis-à-vis the

  distribution block 23, the bore 15 being in communication with the pass-

  sage 24. Element 10-can be put in place by screwing as tightly as necessary using a wrench having a hexagonal section or a

  Allen key inserted in the sleeve 16.

  The pipe assembly 22 can then be introduced into the connection device by a simple axial pressure. This

  pipe assembly has a first element 27 ensuring a coupling

  fully sealed with the internal part of the bore 15 using a

  groove which houses another O-ring 28a. It also has a se-

  cond element 28 which fits inside the cylindrical element lis-

  12. The element 28 has an annular groove 29 which coincides with

holes 20 and 21.

  Once the hose assembly is put in place by pressure, * a U-shaped jumper 30 is brought into a position in which its two branches cross the holes 20 and 21, thereby protruding

  in groove 29 and lock the pipe assembly in position.

  Although only one connection device is shown on

  Figure 4, to define a connection with a single passage 24, more

  sieurs of these connection devices can, in practice, be grouped close to each other on the distribution block 23. Due to the fact that one can position each of the elements 10 by tight screwing, without having to apply a key on the outer part of it, the connection devices can be arranged very close to each other, which allows the distribution block to be made as small as possible to receive a given number of connection devices. It suffices only that the spacing between median axes of connection devices is slightly greater than the maximum dimension of the connection device, measured transversely to its axis. In the embodiment shown, it suffices simply that the spacing between adjacent connection devices is slightly greater than the maximum diameter of the element 12, ensuring that the jumpers 30 are inserted along parallel axes on

  adjacent fittings. The insertion direction of the jumpers is easily

  glable since element 12 can rotate freely on element 10.

  The connection device shown can be used to constitute either a temporary assembly or a permanent assembly. Yes

  permanent mounting is required, the threads are normally

  of a sealant and / or an adhesive, such as "Loctite".

  Although the above description has focused on a mode of re-

  alization specific to the present invention, it is understood that it is not limited to the details of the embodiment described and that various variants and modifications can be made without

  as well go beyond the scope of the invention.

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Claims (18)

  1. Connection device subjected to fluid pressure   of, characterized in that it comprises a threaded element (10) intended to   couple by screwing with an additional element (23), and a pass   age of fluid passing through it, at least part of said fluid passage being shaped for coupling with a guide means, the   connection device which can thus be guided to come into contact   pler with said complementary element.   2. Connection device, as defined in the claim   cation 1, characterized in that said part shaped for ac-   coupling with a guide means is in the form of a sec-   internal, hexagonal or square transverse tion (16).   3. Connection device, as defined in the claim   cation 2, characterized in that the transverse distance between the dishes of said hexagon or square (16) is less than the width of the part remaining from the fluid passage.   4. Connection device, as defined in the claim   cation 2, characterized in that said transverse distance between the dishes   is greater than the width of the remaining part of said fluid passage.   5. Connection device, as defined in one   conch of the preceding claims, characterized in that at   its end opposite to the threaded element (10), the connection device   ment comprises a smooth cylindrical element (12) having at least one   hole (20, 21) arranged at right angles to its axis, for the purpose of   cevoir a retainer (30) for another complementary element mental (22).   6. Connection device, as defined in the claim   cation 5, characterized in that the smooth cylindrical element (12) of the device   positive connection is able to rotate with respect to said passage of fluid.   7. Connection device, as defined in the claim   cation 6, characterized in that another cylindrical element is provided   smooth for tight coupling with the other complementary element re (22).   8. Connection device, as defined in the claim   cation 7, characterized in that the other complementary element comprises 7- a hose connector (22).   9. Connection device, as defined in one   conch of the preceding claims, characterized in that it is provided   a sealing compound for ensuring a fluid tight seal between the threaded element (10) and the first mentioned complementary element (23). 10. Connection device, as defined in one   any one of the preceding claims, characterized in that it is   provided an O-ring (26) to ensure a tight seal between the device   connection point and the first additional element mentioned (23). 11. Connection device subjected to fluid pressure, characterized in that it comprises a threaded element (10) intended to   couple by screwing with an additional element (23), and a pass   ge of fluid passing through it, at least part of the threaded element being shaped for axial coupling with a guide means, the   connection device which can thus be guided to come into contact   pler with the complementary element.   12. Connection device, as defined in the resale   dication 11, characterized in that said part shaped for axial coupling with a guide means is in the form   of an internal, hexagonal or square cross section (16).   13. Connection device, as defined in the resale   dication 12, characterized in that said guide means is in the form of a non-cylindrical cross section or a section   interrupted cylindrical cross section (16).   14. Connection device, as defined in the resale   dication 13, characterized in that the minimum transverse dimension of the guide means (16) is less than the width of the remaining part fluid passage.   15. Connection device, as defined in the resale   dication 11, characterized in that close to its threaded element (10), it comprises an element (13) intended for fixing a complementary element rotary (12).   16. Connection device, as defined in the resale   -8- indication 15, characterized in that the rotary complementary element (12) comprises at least one hole (20, 21) arranged tangentially with respect to it, in order to receive a retaining device (30) intended for a   another complementary element (22).   17. Connection device, as defined in claim 15, characterized in that the rotary complementary element (12) is held captive in rotation.   18. Distribution block (23) comprising several assemblies forming pipes (22) connected to it by means of several   connection as defined in any one of the claims   previous and characterized in that they are substantially contiguous the to each other.