RU2737054C1 - Device for fluid medium supply - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: device relates to hydraulic transport using gas pressure. Device comprises a pyrotechnic generator with a gas-generating charge, an actuation system and a working gas discharge pipe, vessel with cavity for fluid working medium, inlet branch pipe for working gas and outlet branch pipe for fluid working medium, arranged in cavity for fluid working medium is chamber from elastic material in form of barrel, open side facing outlet pipe and connected to vessel housing, a heating element for a fluid working medium installed in a reservoir with the possibility of insulation of a fluid working medium from a heat carrier. Height of chamber is comparable with half height of cavity for fluid working medium. Generator is installed in vessel and used as heater. At that part of outer surfaces of generator is in contact with fluid working medium, and channels communicated with fluid working chamber and container outlet branch pipe are made on its outer surfaces at gas-generating charge location. Branch pipe for working gas outlet from the generator is located on the side of the actuation system. Portion of the pipeline connecting the generator to the vessel inlet branch pipe can be made in the form of a helical spring and is installed on the outer surface of the container outlet branch pipe. In the outlet pipe wall of the container there can be a free cavity coaxially to the outlet hole, which is pneumatically connected to the generator branch pipe for the working gas outlet and to the vessel inlet branch pipe.EFFECT: technical result is reduction of weight, dimensions and operation time of device in conditions of negative temperature; simple device layout; increased reliability of operation.3 cl, 3 dwg

Description

A device for supplying a working fluid (TPC) refers to hydraulic transport using gas pressure and can be used to supply various liquids.

Known devices for supplying, dosing and distributing lubricants and other TRS. Moving and transporting TRS to the place of its consumption is achieved most often due to compression or expansion by gas pressure of the elastic chamber (bag, shell, cap, etc.). A decrease or increase in the volume of the elastic chamber ensures that the TRS is squeezed out of the reservoir or from that part of its cavity where this working medium is located before the device is triggered.

When studying reference and patent funds, analogues of the invention were identified, including:

- an automatic device for supplying grease, given in the international application No. 89/01589, IPC ⁹ F16N 11/10, publication 23.02.89. The device contains a reservoir with lubricant, an elastic chamber and an electrochemical cell for generating a working gas, by means of the pressure of which the chamber expands and squeezes out the lubricant from the reservoir;

- a device for lubricating pneumatic mechanisms using gas pressure, given in US patent No. 3724601, IPC ⁹ F16N 7/30, publication 03.04.73. The device has a housing with an outlet, in which a container with lubricant in the form of a bag made of elastic material is placed, which is flattened under the pressure of the working gas (air flow) and squeezes the lubricant into this flow through the nozzle.

The general disadvantages of these analogs are low and unstable efficiency (the amount of squeezed out TRS relative to the amount placed in the device) due to uneven squeezing out of TRS during compression (or expansion) of the chamber in which it is stored.

Known device for feeding TRS using gas pressure, given in patent RU No. 2334160, IPC ⁹ F16N 7/30, publication 20.09.2008, B.I. No. 26. The device contains a housing with an inlet for a pipeline from a source of working gas and an outlet for TRS. Inside the body there are: a chamber made of an elastic material in the form of a glass, with the open side facing the outlet pipe and connected to the body, and a tubular collector with rounding radii at the free end. The free end of the tube protrudes from the seating point in the housing in the form of a console installed with the possibility of outputting the TPC through the tube. A sealing element in the form of a membrane is installed in the outlet pipe.

Compared to previous analogs, this device has a higher and more stable efficiency due to the geometric shape of the chamber and more reliable regulation of the process of pushing TRS through the collector. As a result, this device provides higher response reliability and operational safety.

The disadvantage of the device is a large variation in the response time in the given operating conditions due to the fact that the dynamic viscosity of all known Newtonian and non-Newtonian fluids is strongly temperature dependent.

Known device for feeding TRS using gas pressure, given in patent RU No. 2478867, IPC F16N 7/30, publication 10.04.2013, B.I. No. 10. The device contains a housing with an inlet for the pipeline from a source of working gas in the form of a pyrotechnic generator and an outlet for TRS. Inside the body there is a chamber made of an elastic material in the form of a glass, with its open side facing the outlet pipe and connected to the body, and a collector of the TPC output. The junction of the chamber with the body is located from the collector at a distance commensurate with the height of the chamber. In this case, the device additionally contains a heating element installed in the manifold with the possibility of isolating the TPC from the coolant, for which a source equipped with an activation system is used.

This device was chosen as a prototype.

In comparison with all the above analogs, such a device has a response time reduced by up to 10 times under negative temperature conditions using fluids that have high viscosity under these conditions. At the same time, a significant reduction in the response time spread is ensured while maintaining high operational reliability and the required level of safety.

The disadvantage of the device selected as a prototype is the presence in its composition of a heating element installed in the manifold with the possibility of isolating the heat transfer system from the coolant, which requires a source with its own activation system. Therefore, for the operation of this device, it is required to use two consumers, namely, the source of the working gas (pyrotechnic gas generator) and the coolant of the heating element installed inside the container in the manifold. As a result, the dimensions and weight of the device increase, as well as its layout at the site of application becomes more complicated, the operational capabilities of the device are narrowed and the reliability of operation during operation decreases.

The objective of the present invention is to reduce the overall weight characteristics and response time, simplify the device, expand the operational capabilities and increase the reliability of operation while maintaining the required level of safety in all operating conditions.

When using the proposed invention, the following technical result is achieved:

- reduction of dimensions, weight and response time by up to 1.5 times;

- reduction of at least 2 times the number of components that require activation when triggered;

- simplification of the device layout by reducing the number of components that require activation when triggered;

- expanding the operational capabilities of the device, as well as improving the reliability and safety of operation.

The solution to the problem and the achievement of the technical result is ensured by the fact that in the device for feeding TRS using the working gas pressure, containing a pyrotechnic generator with a gas-generating charge, an activation system and a branch pipe for the working gas outlet, a container with a cavity for TRS, an inlet for the working gas and outlet for TRS, a chamber made of elastic material in the form of a glass, placed in the cavity for TRS, with the open side facing the outlet and connected to the tank body, a heating element for TRS installed in the vessel with the possibility of isolating TRS from the coolant, while the height of the chamber is comparable with half the height of the cavity for the TRS, according to the present invention, the pyrotechnic generator of the working gas is installed in the container and used as a heater, while part of the outer surfaces of the generator contacts the TRS and on the outer surfaces of the generator at the location of the gas-generating charge longitudinal and transverse channels are made, communicated with the cavity for the TRS and the outlet branch pipe of the tank, and the branch pipe for the working gas outlet from the generator is located on the side of the activation system.

In this case, a part of the pipeline connecting the pyrotechnic working gas generator with the inlet branch pipe of the container can be made in the form of a helical spring and installed on the outer surface of the outlet branch pipe of the container.

In addition, a free cavity can be made in the wall of the outlet branch pipe of the container coaxially with the outlet opening, which is pneumatically connected to the generator branch pipe for the working gas outlet and the inlet branch pipe of the container.

Thus, the proposed device contains the following distinctive features:

- working gas generator is installed in the tank;

- working gas generator is used as a heater;

- part of the outer surfaces of the working gas generator is in contact with the TRS;

- on the outer surfaces of the working gas generator at the location of the gas-generating charge, longitudinal and transverse channels are made, connected with the cavity for the TRS and the outlet branch pipe of the container;

- the branch pipe for the working gas outlet from the generator is located on the side of the activation system;

Dependent items contain the following distinguishing features:

- a part of the pipeline connecting the working gas generator with the inlet branch pipe of the container can be made in the form of a helical spring and installed on the outer surface of the outlet branch pipe of the container;

or,

- a free cavity can be made in the wall of the outlet branch pipe of the container coaxially with the outlet opening, which is pneumatically connected to the generator branch pipe for the working gas outlet and the inlet branch pipe of the container.

The use of a pyrotechnic working gas generator and its installation in a container make it possible to use the heat generated when the generator is triggered to heat the TRS in order to reduce the response time of the device, especially at negative temperatures.

This made it possible to use a working gas generator as a heater, which provides, first of all, the possibility of a significant reduction in the response time of the device under negative temperature conditions, including when using TPCs having high viscosity under these conditions. In this case, a positive result is achieved without any additional energy costs. In addition, this contributes to the possibility of reducing the overall and mass characteristics and simplifying the layout of the device, as well as expanding its operational capabilities and increasing the reliability of operation by reducing the number of functional components, including those requiring activation when triggered.

Contacting a part of the outer surfaces of the working gas generator with TRS provides the most rational use of the heat generated by the generator when it is triggered, which leads to a decrease in the TRS viscosity and, as a result, significantly reduces the operating time of the device.

The execution on the outer surfaces of the working gas generator at the location of the gas-generating charge of the longitudinal and transverse channels communicated with the cavity for the TRS and the outlet branch pipe of the container, provides, first of all, the supply of the TRS to the outlet branch pipe of the container. At the same time, during the operation of the generator, its outer surfaces at the location of the gas-generating charge, both on the bottom part and on the side walls of its body, are significantly heated. As a result of heat transfer, heating of the TRS, passing through the specified longitudinal and transverse channels, occurs. Due to heating, the viscosity of the TRS is reduced. At the same time, the speed of its transportation increases. As a result, the operating time of the device is significantly reduced, which is realized in large quantities when the device is triggered under operating conditions at negative temperatures.

The location of the branch pipe for the outlet of the working gas from the generator from the side of the activation system provides the possibility of placing the generator in the inner cavity of the tank and using the heat released when the generator is triggered to heat the TRS.

In particular cases, reflected in the dependent claims, it is possible to make a part of the pipeline connecting the working gas generator to the inlet of the container in the form of a helical spring and install it on the outer surface of the outlet of the container, or to make it in the wall of the outlet of the container coaxially with the outlet of a free cavity pneumatically connected to the generator branch pipe for the working gas outlet and the container inlet branch pipe. This allows, first of all, to provide heating of the TRS located at the time of the device's operation in the outlet branch pipe of the tank, and then additionally heat up the entire TRS leaving the vessel, which contributes to the possibility of achieving an optimal reduction in the operating time of the device.

Taken together, the essential features of the proposed device make it possible to solve the problem of the invention formulated above and to achieve the required technical result.

Examples of device execution are illustrated in Figs. 1, 2 and 3.

The proposed device shown in FIG. 1, contains the following main components: a pyrotechnic generator 1 as a source of working gas, a container 2 for storing TRS, a thin-walled chamber 3 located in the cavity of the container 2, a sealing element 4 and a pipeline 5.

The pyrotechnic generator 1 includes a structural part 6, which houses a gas-generating charge (not shown in the illustration), an activation system 7, an electrical connector 8 and a branch pipe 9 for the working gas outlet, which is made on the side of the activation system 7. The generator 1 is installed in container 2, while part of its outer surfaces contacts the TRS, and on the outer surfaces of the structural part 6 there are longitudinal and transverse channels connected with the cavity for TRS and the outlet branch pipe of the container, including in the form of holes 10 on the bottom, as well as longitudinal grooves 11 and transverse grooves 12 on the side surfaces of part 6 of the generator housing 1.

The container 2 includes a cavity 13 for accommodating the TRS, an inlet 14 for supplying the working gas and an outlet 15 for removing the TRS.

The thin-walled chamber 3 is made of an elastic material and in longitudinal section has the shape of a cup with its open side facing the outlet pipe 15. The height of the chamber 3 is commensurate with half the height of the cavity 13 for TRS. Chamber 3 contains an insulating element 16 in the form of a T-shaped collar and by means of this insulating element is connected to the container body 2 with the possibility of supplying the working gas to its outer surface through the pipe 14 and the gap 17 between the walls of the chamber 3 and the mating surfaces of the inner cavity of the container body 2.

The sealing element 4 is made in the form of a cap with a destructible element (membrane) and is installed in the outlet 15 of the container 2.

The pipeline 5 is designed to connect the branch pipe 9 for the outlet of the working gas from the generator 1 with the inlet branch pipe 14 for supplying the working gas to the container 2.

The device shown in FIG. 2 differs from the embodiment shown in FIG. 1, in that part of the pipeline 5 connecting the branch pipe 9 of the source of the working gas 1 with the inlet branch pipe 14 of the container 2 is made in the form of a helical spring 18, which is installed on the outer surface of the outlet pipe 15 of the container 2.

The device shown in FIG. 3 differs from the embodiment shown in FIG. 1, in that in the wall of the outlet 15 of the tank 2, a free cavity 19 is made coaxially with the outlet, which is pneumatically connected to the nozzle 9 of the generator 1 for the working gas outlet and the inlet 14 of the tank 2 by pipeline 5.

The device shown in FIG. 1 works as follows.

When the operation command is sent to the electrical connector 8, the pyrotechnic generator 1 is turned on. The working gas from the generator 1 through the pipeline 5 through the nozzles 9, 14 and the gap 17 enters the container body 2, where it reaches the walls of the chamber 3.

At the same time, during the combustion of the gas-generating charge (not shown in the illustration), the walls of part 6 of the generator 1 housing are heated, and due to heat transfer, heating occurs, first of all, of the TRS part located directly in the holes 10, grooves 11 and grooves 12 made on the outer surfaces of the structural part 6, and then also near all its other surfaces in contact with the TRS.

At the same time, under the action of the working gas pressure, the walls of the chamber 3 move away from the inner surface of the container 2, and then the chamber 3 is turned inside out (the final and intermediate positions of the chamber wall are not shown in the illustration) until the cylindrical wall of the chamber stops at the surface of the inner cavity of the container 2, and the bottom - into the bottom of the generator 1. In the process of turning the chamber 3, the increasing pressure of the heated TRS supplied through the holes 10, grooves 11 and grooves 12 acts on the sealing element 4. In this case, after reaching a predetermined pressure level, the membrane breaks. Under the action of the working gas pressure, the heated TRS through the outlet 15, as it is squeezed out from the inner cavity of the container 2, enters the place of its consumption (the view of the sealing element 4 with a destroyed membrane, the transport pipeline and the place of consumption of the TRS are not shown in the illustration).

In the process of further increase in pressure, the TPC in the chamber 3, passing in separate jets through the holes 10, grooves 11 and grooves 12, continues to be heated, and in the heated state is completely squeezed out to the consumer.

Due to heating when passing through holes 10, grooves 11 and grooves 12, the viscosity of the TRS decreases and the speed of its transportation increases. As a result, the operating time of the device is significantly reduced, which is realized in large quantities, when the device is triggered under operating conditions at negative temperatures.

The device shown in FIG. 2 basically works in the same way as described above. The difference lies in the fact that before entering through the inlet pipe 14 into the container body 2, hot working gas through the pipe 9 from the gas source 1 through the pipeline 5 enters its spring part 18. At the same time, pipeline 5, its spring part 18 and the outlet pipe are heated 15. Due to the heat transfer, the TRS located in the sealing element 4 and part of the annular groove 12 begins to heat up. As a result of the heating in the 15 first portions of the TRS in the pipe 15, which will be transported to the consumer, an increase in the transportation speed is achieved. Therefore, in comparison with the device shown in FIG. 1, the running time is further reduced.

The device shown in FIG. 3 practically operates in the same way as the apparatus of FIG. 2. The only difference lies in the fact that before entering through the inlet pipe 14 into the container body 2, the hot working gas through the pipe 9 from the gas source 1, when flowing through the pipeline 5, also flows through the free cavity 19 made in the wall of the outlet pipe 15 of the container 2 coaxial to the outlet.

At the same time, the outlet pipe 15 is heated and, due to heat transfer, the TPC located in the sealing element 4 and part of the annular groove 12 is heated even more intensively.

Due to more intensive heating in the 15 first portions of TRS in the pipe, which will be transported to the consumer, an even greater increase in the transport speed is achieved. As a result, in comparison with the device shown in FIG. 2, the running time is shortened.

To re-operate the devices shown in FIG. 1, 2 and 3, the cavity of the container 2 with the chamber 3 is again filled with a predetermined amount of TRS, and the sealing element 4 with a destroyed membrane and the pyrotechnic generator 1 are replaced. For the manufacture of chamber 3, a rubber compound is used. The generator body 1 is made of titanium alloys. The body parts of the activation system 7 with a branch pipe 9 for the working gas outlet are made of steel alloys. The container body 2 and the sealing element 4 are made of aluminum alloys. Pipeline 5 is made of a steel tube with an outer diameter (2 ... 3) mm.

In the case of the design according to the proposed invention, the following technical result is achieved:

- reduction of dimensions, weight and response time by up to 1.5 times;

- reduction of at least 2 times the number of components that require activation when triggered;

- simplification of the device layout by reducing the number of components that require activation when triggered;

- expanding the operational capabilities of the device, as well as improving the reliability and safety of operation.

Claims (3)

1. A device for supplying a working fluid using the working gas pressure, containing a pyrotechnic generator with a gas-generating charge, an activation system and a branch pipe for the working gas outlet, a container with a cavity for a working fluid, an inlet for a working gas and an outlet for a working fluid , placed in the cavity for the working fluid, a chamber made of an elastic material in the form of a cup, with the open side facing the outlet pipe and connected to the container body; a heating element for the working fluid installed in the container with the possibility of isolating the working fluid from the heat carrier, while the height the chamber is comparable to half the height of the cavity for the working fluid, characterized in that the pyrotechnic working gas generator is installed in the container and used as a heater, while part of the outer surfaces of the generator contacts the working fluid and on the outer surfaces of the generator in the location of the gas-generating charge made longitudinal and transverse channels communicated with the cavity for the working fluid and the outlet branch pipe of the vessel, and the branch pipe for the working gas outlet from the generator is located on the side of the activation system. 2. The device according to claim 1, characterized in that part of the pipeline connecting the pyrotechnic working gas generator with the inlet branch pipe of the container is made in the form of a helical spring and is installed on the outer surface of the outlet branch pipe of the container. 3. A device according to claim 1, characterized in that a free cavity is made in the wall of the outlet branch pipe of the container coaxially with the outlet opening, which is pneumatically connected to the generator branch pipe for the working gas outlet and the inlet branch pipe of the container.

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