On-board valve testing device

Abstract

The utility model provides an onboard valve testing device, which belongs to the technical field of aviation equipment and comprises a pipe nozzle, a spring, a shell, an ejector rod valve and the like, one end of the shell is inserted into an inner hole of an onboard valve outer sleeve nut to realize quick connection of the testing device and the onboard valve, a stepped hole is arranged in the shell, the ejector rod valve penetrates into the stepped hole, and the pipe nozzle is mounted at the other end of the shell. And the spring is sleeved on the mandril valve and is pressed between the mandril valve and the inner hole of the shell to provide spring force for the mandril valve. After the experiment device is installed on the onboard valve, the ejector rod valve ejects the onboard valve open under the action of the spring force, and after the experiment device is pulled out, the onboard valve is closed under the action of the spring of the onboard valve. According to the utility model, the docking flexibility test of the onboard valve can be realized, so that the test meets the technical requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation equipment and relates to an on-board valve test device, which is used for testing on-board valves to see whether they meet technical requirements. Background Art

[0002] The valves on a certain type of aircraft cannot be tested for docking flexibility due to the lack of special tooling (hydraulic oil with a pressure of 20kPa is introduced into the product inlet, and the product is manually docked and separated with the special tooling five times each. The docking and separation should be flexible, and the valves should open and close flexibly). This affects the demand for repairs on new aircraft.

[0003] Conventional testing involves constructing a mandrel with a plug and opening an oil hole. During testing, hydraulic oil at a pressure of 20 kPa is introduced into the product inlet. The plug is then used to push open the valve, causing oil to flow. Removing the plug closes the valve. This simple test setup, however, is prone to oil spray during product testing and is not suitable for the valve on this machine. Utility Model Content

[0004] In view of this, the utility model provides an on-board valve test device, which serves as a docking test tool and can realize the on-board valve docking flexibility test, so that the test meets the technical requirements.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] An on-board valve testing device comprises a nozzle 1, a spring 2, a rubber ring 3, a shell 4, a rubber pad 5, and a push rod valve 6.

[0007] The main body of the nozzle 1 is a cylindrical shell with one end closed. The inner hole of the cylindrical shell is threaded. An oil outlet nozzle is provided at the center of the closed end, and the inner hole of the oil outlet nozzle is communicated with the inner hole of the cylindrical shell. The oil outlet nozzle is externally threaded, and its outer diameter and thread are set according to the valve nozzle on the machine, and is used to connect to the test bench.

[0008] The shell 4 is a stepped columnar structure, the first section of which is made of external thread and cooperates with the internal thread of the nozzle 1, the second section has the largest outer diameter, and the stepped end faces of the first and second sections cooperate with the end face of the nozzle 1; the outer diameter of the third section of the shell 4 is set according to the inner hole of the outer nut of the valve on the machine, which is used to insert the entire test device into the inner hole of the outer nut of the valve on the machine to achieve quick connection with the valve on the machine; the inner hole of the shell 4 is a stepped hole, the inner hole close to the side of the first section of the shell 4 is a large diameter section, and the other section is a small diameter section.

[0009] The ejector valve 6 is a four-section stepped shaft, the second section has the largest outer diameter, the third section has a larger outer diameter than the fourth section, and one side of the fourth section of the ejector valve 6 is inserted into the housing 4 from the side of the large diameter section of the inner hole of the housing 4, and its second and third sections are respectively slidably matched with the large diameter section and small diameter section of the inner hole of the housing 4. The fourth section of the ejector valve 6 is pressed against the valve on the machine, and the first section is used for the sleeve spring 2.

[0010] The spring 2 is sleeved on the first section of the shell 4. After the shell 4 and the nozzle 1 are assembled, the spring 2 is pressed between the end face of the inner hole of the nozzle 1 and the stepped shoulder of the inner hole of the shell 4, providing spring force for the push rod valve 6. When the entire test device is connected to the on-machine valve, the push rod valve 6 pushes open the on-machine valve under the spring force of the spring 2. The force value of the spring 2 should be greater than the on-machine valve spring, and the length of the spring 2 is set according to the working stroke of the push rod valve 6.

[0011] A rubber ring 3 is provided at the joint between the end of the nozzle 1 and the first and second stepped end surfaces of the shell 4 to achieve sealing.

[0012] The stepped end surfaces of the second and third sections of the ejector valve 6 are adhered with rubber pads 5 for cooperating with the large diameter section of the inner hole of the housing 4 to achieve sealing.

[0013] The beneficial effects of the present invention are:

[0014] The structure and principle of the on-machine valve are taken into consideration during the design. Since the joint of the on-machine valve product is a steel ball structure similar to the quick-release joint of a washing machine, if the tooling design adopts a blocking cover with a push rod, oil will be sprayed when the on-machine valve is opened. Therefore, the utility model designs the push rod valve according to the form of the on-machine valve product, and designs the tooling spring with reference to the original spring of the on-machine valve product; the shell of the utility model is inserted into the on-machine valve part to lift the steel ball at the connection of the on-machine valve, and the push rod valve pushes open the on-machine valve for a docking test. The on-machine valve and the push rod valve are docked, oil flows from the nozzle, and the on-machine valve is closed under the action of the spring during separation, the valve stops flowing oil, and the product separation is flexible.

[0015] 2) The on-board valve can be directly connected to the test device of the utility model to complete the on-board valve product docking flexibility test. It is reliable to use and easy to assemble and disassemble, and will not cause any damage to the product during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the tooling assembly drawing;

[0017] Figure 2 Schematic diagram of the shell, wherein (a) is a front view and (b) is a side view;

[0018] Figure 3 Schematic diagram of the nozzle;

[0019] Figure 4 Schematic diagram of the spring, where (a) is the main view and (b) is the side view;

[0020] Figure 5 Schematic diagram of the rubber pad, where (a) is the main view and (b) is the side view;

[0021] Figure 6 Schematic diagram of the ejector valve;

[0022] In the figure: 1-nozzle; 2-spring; 3-rubber ring; 4-housing; 5-rubber pad; 6-elevator valve. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solution of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments improved or adjusted by ordinary technicians in this field fall within the scope of protection of the present invention.

[0024] The utility model takes a valve on a certain type of aircraft as an example and provides a valve test device on the aircraft. The test device includes a nozzle 1, a spring 2, a rubber ring 3, a shell 4, a rubber pad 5, and a push rod valve 6. Figure 1 shown.

[0025] like Figure 3 As shown, the main body of the nozzle 1 is a cylindrical shell with one end closed. The inner hole of the cylindrical shell is threaded, and an oil nozzle is provided at the center of the closed end. The inner hole of the oil nozzle is communicated with the inner hole of the cylindrical shell. The oil nozzle is externally threaded, and its outer diameter and thread are set according to the valve nozzle on the machine for connecting to the test bench.

[0026] like Figure 2 As shown, the shell 4 is a stepped columnar structure, the first section of which is made of external thread, which cooperates with the internal thread of the nozzle 1, and the second section has the largest outer diameter. The stepped end face between the first section and the second section fits with the end face of the nozzle 1 to ensure that the two are assembled in place, and a rubber ring 3 is provided at the fitting place of the two to seal and prevent oil leakage; the outer diameter of the third section of the shell 4 is set to 15mm according to the inner hole diameter of the valve outer nut on the machine of 15mm, which is used to insert the entire test device into the inner hole of the valve outer nut on the machine to achieve quick connection with the valve on the machine; the inner hole of the shell 4 is a stepped hole, the inner hole close to the side of the first section of the shell 4 is a large diameter section, and the other section is a small diameter section.

[0027] like Figure 6 As shown, the ejector valve 6 is a four-section stepped shaft, the second section has the largest outer diameter, the third section has a larger outer diameter than the fourth section, and the ejector valve 6 is placed in the housing 4, and the second and third sections are respectively slidably matched with the large diameter section and small diameter section of the inner hole of the housing 4, and a rubber pad 5 is pasted on the stepped end surface between the second and third sections (as shown in FIG. Figure 5 ), the rubber pad 5 cooperates with the stepped end face of the inner hole of the shell 4 to limit the movement range of the push rod valve 6 and seal it to prevent the push rod valve 6 from falling out and leaking oil. The fourth section of the push rod valve 6 is against the valve on the machine, and the first section is used for the set spring 2.

[0028] like Figure 4As shown, the spring 2 is sleeved on the first section of the shell 4. After the shell 4 and the nozzle 1 are assembled, the spring 2 is pressed between the end face of the inner hole of the nozzle 1 and the end face of the second section of the push rod valve 6, providing spring force for the push rod valve 6. When the entire test device is connected to the on-machine valve, the push rod valve 6 pushes open the on-machine valve under the spring force of the spring 2. Among them, the pressing stroke of the on-machine valve spring is 2.1mm, and the force is 12N. The force value of the spring 2 should be greater than that of the on-machine valve spring. The length of the spring 2 is set according to the working stroke of the push rod valve 6 (that is, the length of the on-machine valve from the second and third step end faces of the shell 4).

[0029] The installation and use process of this utility model is:

[0030] Glue the rubber pad 5 to the push rod valve 6, place the spring 2 on the first section of the push rod valve 6, install the push rod valve 6 with the rubber pad 5 and spring 2 in the housing 4, and screw the nozzle 1 onto the first section of the housing 4. When conducting the docking flexibility test, tighten the oil outlet of the test device nozzle 1 to the test bench, introduce hydraulic oil at a pressure of 20kPa from the inlet of the on-board valve, insert the third section of the test device housing 4 into the inner hole of the nut on the outer sleeve of the on-board valve, press the push rod valve 6 against the on-board valve, and open the on-board valve under the action of the spring 2. Oil will flow out of the nozzle 1, and the flow rate at the nozzle 1 can be measured. Pull out the test device, and the on-board valve will close under the action of its own spring. Repeatedly dock the test device with the on-board valve to test whether the on-board valve can open and close flexibly.

[0031] The above-described embodiments merely express the implementation methods of the present invention, but they should not be understood as limiting the scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. An onboard valve test device, characterized in that: The test device comprises a nozzle (1), a spring (2), a housing (4), and a push rod valve (6); The nozzle (1) is a cylindrical shell with one end closed. The inner hole of the cylindrical shell is threaded. An oil outlet nozzle is provided at the center of the closed end. The inner hole of the oil outlet nozzle is communicated with the inner hole of the cylindrical shell. The oil outlet nozzle is externally threaded. Its outer diameter and thread are set according to the valve nozzle on the machine, and is used to connect to the test bench. The shell (4) is a stepped columnar structure, wherein the first section is formed with an external thread and matched with the internal thread of the nozzle (1), the second section has the largest outer diameter, and the stepped end faces of the first and second sections match with the end face of the nozzle (1); the outer diameter of the third section of the shell (4) is set according to the inner hole of the valve outer nut on the machine, and is used to insert the entire test device into the inner hole of the valve outer nut on the machine; the inner hole of the shell (4) is a stepped hole, the inner hole close to the first section of the shell (4) is a large diameter section, and the other section is a small diameter section; The ejector valve (6) is a four-section stepped shaft, the second section has the largest outer diameter, the third section has a larger outer diameter than the fourth section, one side of the fourth section of the ejector valve (6) is inserted into the housing (4) from the side of the large diameter section of the inner hole of the housing (4), and the second and third sections are respectively slidably matched with the large diameter section and the small diameter section of the inner hole of the housing (4). The fourth section of the ejector valve (6) is pressed against the upper valve, and the first section is used for fitting the spring (2); The spring (2) is sleeved on the first section of the housing (4). After the housing (4) and the nozzle (1) are assembled, the spring (2) is pressed between the end face of the inner hole of the nozzle (1) and the stepped shoulder of the inner hole of the housing (4). When the entire test device is connected to the valve on the machine, the push rod valve (6) pushes open the valve on the machine under the spring force of the spring (2).

2. The onboard valve test device according to claim 1, characterized in that: The force value of the spring (2) is greater than that of the valve spring on the machine, and the length of the spring (2) is set according to the working stroke of the push rod valve (6).

3. The onboard valve test device according to claim 1, characterized in that: A rubber ring (3) is provided at the joint between the end of the nozzle (1) and the first and second stepped end surfaces of the shell (4) to achieve sealing.

4. The onboard valve test device according to claim 1, characterized in that: The stepped end surfaces of the second and third sections of the ejector valve (6) are provided with rubber pads (5) for cooperating with the large diameter section of the inner hole of the housing (4) to achieve sealing.

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