Piston ring test bench

Abstract

A rig for testing piston rings includes a hollow cylinder (1) with a piston (2) installed inside, made with a channel (2.1) for a medium and an opening (2.2) in which a plunger (3) is placed, while the piston ring (4) to be tested is mounted on the piston. The cylinder (1) is installed inside a heating tank (5) with a heating element (5.1), while the plunger (3) is made in the form of a hollow tube into which a medium is supplied through a valve (6), and a plug (7) is installed at the bottom of the cylinder, made with a channel (7.1) for supplying a medium, as well as with an opening (7.2) for relieving excess pressure. The technical result of the claimed utility model is the expansion of the nomenclature of the tests performed. 4 c.p. fils, 1 fig.

Description

[0001] Technical field

[0002] The utility model relates to the field of mechanical engineering, in particular to the design of stands for testing piston rings, and can be used for testing rings used, for example, in compressor pistons.

[0003] Technology Level

[0004] A test rig for piston rings is known from the prior art, comprising a hollow cylinder with a piston installed inside, made with a channel for the medium and an opening in which a plunger is placed, while a piston ring is installed on the piston (see SU 1643977 A1).

[0005] The technical problem inherent in the given analogue is the narrow range of tests carried out.

[0006] This technical problem is caused by the fact that the analogue does not allow simulating the operating conditions of a piston ring in a toxic environment or changing the gas temperature in the cylinder, which limits the number of types of tests that can be carried out on such a stand.

[0007] The closest analogue is a test rig for piston rings, which includes a hollow cylinder with a piston installed inside, made with a channel for the medium and an opening in which a plunger is placed, while a piston ring is installed on the piston (see SU 1455262 A1).

[0008] The technical problem inherent in the given analogue is the narrow range of tests carried out.

[0009] This technical problem is caused by the fact that the analogue does not allow simulating the operating conditions of a piston ring in a toxic environment or changing the gas temperature in the cylinder, which limits the number of types of tests that can be carried out on such a stand.

[0010] Essence Revealed

[0011] The technical result of the claimed utility model is the expansion of the range of tests carried out.

[0012] The stated technical result is achieved by the following design of a test bench for piston rings.

[0013] The piston ring test rig includes a hollow cylinder with a piston installed inside, made with a channel for the medium and a hole in which a plunger is placed, while the piston ring being tested is installed on the piston.

[0014] The cylinder is installed inside a heating tank with a heating element, while the plunger is made in the form of a hollow tube into which a medium (for example, air or another gas) is supplied through a valve, and at the bottom of the cylinder there is a plug made with a channel for supplying a medium (for example, air or another gas), as well as with a hole for relieving excess pressure.

[0015] Due to the fact that the cylinder is installed inside a heating tank with a heating element, the plunger is made in the form of a hollow tube into which a medium (for example, air or another gas) is supplied through a valve, and at the bottom of the cylinder there is a plug made with a channel for supplying a medium (for example, air or another gas) and with a hole for relieving excess pressure, the range of tests carried out by the stand is expanded, in particular, it becomes possible to test piston rings in toxic environments.

[0016] The plug has grooves for installing sealing elements, which helps improve tightness, while the plug has a channel into which pressure is pumped (for example, through a pneumatic line), which eliminates gas leaks from the cylinder and allows the use of the test bench for testing with toxic environments (for example, with toxic gases).

[0017] Also, the proposed design allows simulating the temperature of the environment.

[0018] Also, in a preferred embodiment of the design, the piston is driven by the operation of an electromagnet installed in the upper part of the cylinder, as well as a magnet installed on the piston, while a nozzle is installed in the hole for relieving excess pressure, through which the medium enters the valve, and a spring is installed on the plug, on which the piston rests, while the plug is made with grooves in which sealing elements are installed, which also additionally contributes to the achievement of the stated technical result.

[0019] All the above design features of the piston ring test bench, both individually and together, contribute to expanding the range of tests performed and allow, in particular, testing of piston rings in toxic environments, as well as temperature control.

[0020] Brief description of drawings

[0021] The claimed utility model is explained by illustrative material, where the illustration shows a general view of a stand for testing piston rings.

[0022] The following structural elements of the piston ring test bench are indicated by the positions on the figures:

[0023] pos. 1 - hollow cylinder;

[0024] pos. 2 - piston;

[0025] pos. 2.1 - channel in the piston;

[0026] pos. 2.2 - hole in the piston for the plunger;

[0027] pos. 3 - plunger;

[0028] pos. 4 - piston ring;

[0029] pos. 5 - heating tank;

[0030] pos. 5.1 - tank heating element;

[0031] pos. 6 - piston plunger valve;

[0032] pos. 7 - plug;

[0033] pos. 7.1 - channel in the plug for supplying the medium;

[0034] pos. 7.2 - hole in the plug for relieving excess pressure;

[0035] pos. 7.3 - nipple installed in the plug;

[0036] pos. 7.4 - plug valve;

[0037] pos. 7.5 - groove in the plug for the seal;

[0038] pos. 7.6 - seal in the plug groove;

[0039] pos. 8 - electromagnet;

[0040] pos. 9 - magnet;

[0041] pos.10 - spring;

[0042] pos.11 - pneumatic line for pressure supply.

[0043] Implementation of a utility model

[0044] The claimed utility model is implemented as follows.

[0045] The piston ring testing rig includes a hollow cylinder 1 with a piston 2 installed inside, made with a channel 2.1 for the medium and an opening 2.2 in which a plunger 3 is placed, while the piston ring 4 being tested is installed on the piston.

[0046] Cylinder 1 is installed inside heating tank 5 with heating element 5.1, while plunger 3 is made in the form of a hollow tube into which a medium (for example, air or another gas) is supplied through valve 6, and at the bottom of the cylinder a plug 7 is installed, made with a channel 7.1 for supplying a medium (for example, air or another gas from a pneumatic line), as well as with an opening 7.2 for relieving excess pressure.

[0047] In a preferred embodiment of the design, the piston is driven by the operation of an electromagnet 8 installed in the upper part of the cylinder, as well as a magnet 9 installed on the piston 2, while a nipple 7.3 is installed in the hole 7.2 for relieving excess pressure,

[0048] through which the medium enters valve 7.4, a spring 10 is installed on the plug, on which the piston rests.

[0049] Plug 7 is made with grooves 7.5, in which sealing elements 7.6 are installed.

[0050] The claimed utility model operates as follows.

[0051] In cylinder 1 there is a piston 2 with a channel 2.1, from which gas is displaced.

[0052] The piston is driven by the operation of the electromagnet 8, which changes its polarity and attracts / repels the magnets 9. The spring 10 limits the movement of the piston 2 and participates in the return movement.

[0053] The test object, piston ring 4, is installed on the piston.

[0054] The piston is pressed by spring 10, which rests against plug 7.

[0055] Excess gas pressure is released by valve 7.4.

[0056] The plug has grooves 7.5 for installing sealing elements 7.5, as well as a channel 7.1 into which pressure is pumped (for example, through pneumatic line 11) to prevent gas leaks from the cylinder.

[0057] If necessary, the liquid in the tank is heated by the heating element 5.1 of tank 5.

[0058] The claimed utility model can be used in the design, as well as in the manufacture of stands intended for testing piston rings in toxic environments.

Claims

1. A test rig for piston rings, comprising a hollow cylinder with a piston installed inside, made with a channel for the medium and an opening in which a plunger is placed, wherein a piston ring is installed on the piston, characterized in that the cylinder is installed inside a heating tank with a heating element, wherein the plunger is made in the form of a hollow tube into which gas is supplied through a valve, and at the bottom of the cylinder a plug is installed, made with a channel for supplying the medium, as well as with an opening for relieving excess pressure.

2. A test stand for piston rings according to paragraph 1, characterized in that the piston is set in motion by the operation of an electromagnet installed in the upper part of the cylinder, as well as a magnet installed on the piston.

3. A test stand for piston rings according to paragraph 1, characterized in that a fitting is installed in the hole for relieving excess pressure, through which the medium enters the valve.

4. A test stand for piston rings according to paragraph 1, characterized in that a spring is installed on the plug, on which the piston rests.

5. A test stand for piston rings according to paragraph 1, characterized in that the plug is made with grooves in which sealing elements are installed.

Images