Detachable rotor engine sealing fin test device

Abstract

The invention belongs to the technical field of rotor engines, and particularly relates to a detachable rotor engine sealing fin test device which comprises a mounting groove seat, a support, a pressure sensor and a displacement sensor. The mounting groove seat comprises a seat body, a mounting groove is formed in the side face of one side of the seat body, a cavity is formed in the seat body, and the mounting groove and the cavity are separated through a barrier wall; a first through hole communicated with the mounting groove and the cavity is formed in the barrier wall, an ejector rod is slidably connected into the through hole, and the ejector rod abuts against the pressure sensor; the pressure sensor is mounted in the cavity; the support is mounted on the side, away from the mounting groove, of the seat body, an adjusting bolt is arranged on the side, close to the seat body, of the support and is in threaded connection with the seat body and / or the support, a displacement sensor is arranged on the side, away from the adjusting bolt, of the support, and the working end of the displacement sensor abuts against the adjusting bolt. The problem that a test for comparing the influence of different radial sealing pieces and different elastic forces on sealing of a cycloid rotor engine is difficult to carry out is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary engines, and in particular relates to a detachable rotary engine sealing piece testing device. Background Art

[0002] The key to ensuring the high power density of a cycloid rotor engine is sealing. Its radial seal is one of the core elements to ensure that there is no blowby between each combustion chamber and to ensure cylinder pressure. Better sealing can improve fuel utilization, provide a better combustion environment, and make emissions more friendly. The effect of radial sealing mainly depends on the form, thickness, and spring force of the radial sealing sheet. Radial sealing sheets of different thicknesses and forms have different sealing effects. Different spring forces of the same radial sealing sheet will also lead to different sealing effects. However, the fixed installation position of the radial sealing sheet in the current cycloid rotor engine means that only one thickness of radial sealing sheet can be used for one engine, and only one spring can be used for each installation. This makes it difficult to conduct tests on cycloid rotor engines to compare the effects of different radial sealing sheets and different elastic forces on sealing. Each time, the engine must be disassembled and different radial sealing sheets installed. Summary of the Invention

[0003] The present invention aims to provide a detachable rotor engine sealing plate test device to solve the problem that it is difficult to conduct tests on a cycloid rotor engine to compare the effects of different radial sealing plates and different elastic forces on the sealing.

[0004] In order to achieve the above-mentioned object, the present invention provides a detachable rotor engine seal plate test device, comprising a mounting slot, a bracket, a pressure sensor, and a displacement sensor: The mounting groove seat comprises a seat body, a mounting groove is formed on a side surface of one side of the seat body, and the mounting groove is used to install a radial sealing plate and / or a spring; a cavity is formed in the seat body, and the mounting groove and the cavity are separated by a barrier wall, and a first through hole is formed on the barrier wall to connect the mounting groove and the cavity, and a push rod is slidably connected in the through hole; a pressure sensor, mounted in the cavity; The bracket is installed on the side of the base body away from the mounting groove. An adjusting bolt is provided on the side of the bracket close to the base body. The adjusting bolt is threadedly connected to the base body and / or the bracket. A displacement sensor is provided on the side of the bracket away from the adjusting bolt. The working end of the displacement sensor is against the adjusting bolt.

[0005] The working principle and beneficial effects of this solution are: This solution is a detachable module on the rotary engine. It can be disassembled and replaced with radial seals of different widths to achieve the function of replacing different radial seals, thus solving the problem of difficulty in conducting tests on cycloid rotor engines to compare different radial seals and the effects of different elastic forces on sealing: When the rotary engine is not running, the rotor rotates to the position where it just supports the radial sealing plate. At this time, the spring and the pressure sensor are not under force. At this time, the adjusting bolt is rotated (the adjusting bolt and the displacement sensor are in compression contact, and the elongation of the sensor is the displacement of the adjusting bolt). The adjusting bolt presses the pressure sensor, and the sensor transmits force to the spring through the push rod. The spring is compressed. At this time, the force of the pressure sensor is the pressure applied to the spring (the spring force can also be calculated based on the displacement). In this way, the spring force is changed before the rotary engine is running.

[0006] When the rotary engine is running, the entire assembly is fixed, the rotor presses against the radial seal, which compresses the spring. This pressure sensor is then subjected to pressure. According to mechanical principles, the force acting on the pressure sensor is the spring's elastic force, enabling real-time monitoring of the spring's elastic force. Furthermore, the adjusting bolt can be rotated to displace the pressure sensor, thereby changing the spring's elastic deformation and, consequently, the spring's elastic force, allowing the spring's elastic force to be varied while the rotary engine is running.

[0007] Therefore, this solution not only facilitates the replacement of radial sealing sheets of different widths and thicknesses for testing and real-time monitoring of the spring force, but also enables the spring force to be adjusted at any time before and during the test, and greatly reduces the workload of disassembling and assembling the radial sealing sheets.

[0008] Optionally, a mounting seat matching the mounting slot is further included, the mounting seat having a sealing sheet groove for mounting a mirrored sealing sheet, and a second through-hole in communication with the first through-hole at the bottom of the sealing sheet groove. The radial sealing sheet is mounted on the mounting seat, which is then mounted into the mounting slot. Compared to directly mounting the radial sealing sheet into the mounting slot, modularly mounting the radial sealing sheet via the mounting seat makes it easier to replace radial sealing sheet seats of different thicknesses, especially mounting seat with multiple different slot widths, and also allows for replacement of radial sealing sheets of different widths.

[0009] Optionally, a force-bearing plate is also provided within the sealing plate groove. A spring is placed on one side of the force-bearing plate, and the other side of the force-bearing plate is connected to a push rod. The push rod is connected to a pressure sensor, which is connected to an adjustment bolt, which is connected to a displacement sensor. This provides a more reliable structure and facilitates adjustment of the spring force.

[0010] Optionally, the push rod includes a large diameter end and a small diameter end, the radial dimension of the large diameter end is larger than the radial dimension of the small diameter end, and the large diameter end faces the pressure sensor.

[0011] Optionally, a sealing ring is installed on the top rod, and a labyrinth sealing structure is provided on the side of the seat body, thereby enhancing the airtightness of the entire experimental device and thus improving the airtightness of the rotary engine.

[0012] Optionally, ribs are provided on both sides of the mounting groove seat, and a slide groove is provided in the mounting groove to be slidably matched with the ribs, and the ribs are slidably matched with the slide groove.

[0013] Optionally, the cavity remains open on both sides of the rotor engine end cover; it also includes an end-to-end sealing compensation mechanism, which includes a booster sleeve and a special-shaped sealing plate. The booster sleeve is open at one end and closed at the other end. The booster sleeve opening size is larger than the pressure sensor size. A threaded hole is opened on the closed end of the booster sleeve so that the booster sleeve is threadedly connected to the adjusting bolt. The outer surface of the booster sleeve is frustum-shaped. A V-shaped groove is opened in the middle of the special-shaped sealing plate to match the outer tube of the booster sleeve, so that when the booster sleeve is inserted into the V-shaped groove, the special-shaped sealing plate can expand outward along the ends of the sealing plate and the radial direction of the booster sleeve. After the installation groove for installing this experimental device is opened on the engine body, the sealing performance of the part where the end cover contacts the installation groove may be greatly reduced. In order to ensure the sealing performance, the two end faces of the seat body need to be processed with high precision, and they must also be installed with high precision, which greatly increases the difficulty of operation. To this end, an end-to-end sealing compensation mechanism is adopted. By rotating the force sleeve and inserting the force sleeve into the V-shaped groove, the special-shaped sealing piece is expanded outward toward the two ends and the end cover, and the force sleeve is used to apply pressure to compensate for the sealing, which greatly reduces the difficulty of seat body processing and installation, thereby further ensuring the sealing and thus ensuring the accuracy of the test results.

[0014] Optionally, a plurality of compression nuts are further provided on the adjusting bolt; and special-shaped sealing sheets are provided on both sides of the cavity opening.

[0015] Optionally, the profiled sealing sheet separates from the center of the V-shaped groove into a left and right sealing sheet, with the separation between the left and right sealing sheets being serrated. This two-piece, separate profiled sealing sheet structure reduces material restrictions, allowing for greater freedom in the selection of a wider range of metal materials, rather than being limited to elastic materials like rubber and nylon. The serrated edges also form a labyrinthine groove structure while expanding outward. The groove can then be sealed by applying a small amount of sealant or by slightly tilting one of the left or right sealing sheets.

[0016] Optionally, wings are provided on both sides of the special-shaped sealing sheet, so that the wings can extend to the outer edge of the cavity, further enhancing the sealing between the end cover and the seat body, and facilitating manual grinding of the thickness of the special-shaped sealing sheet by a fitter, thereby further enhancing the sealing between the end cover and the seat body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a detachable rotor engine sealing piece testing device according to a first embodiment of the present invention; Figure 2This is a schematic structural diagram of the detachable rotary engine sealing plate test device according to the first embodiment of the present invention installed on a rotary engine; Figure 3 This is a schematic structural diagram of the mounting groove seat and radial sealing sheet in the first embodiment of the present invention; Figure 4 Schematic diagram of the structure of the ejector rod in the first embodiment of the present invention; Figure 5 This is a structural diagram of the end-to-end sealing compensation mechanism in the second embodiment of the present invention; Figure 6 Schematic diagram of the structure of the end-to-end sealing compensation mechanism from another perspective in the second embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods: The marks in the drawings of the specification include: rotary engine 1, seat body 2, barrier wall 3, mounting groove seat 4, ear seat 5, pressure sensor 6, bracket 7, rib 9, second through hole 10, radial sealing plate 11, spring 12, force plate 13, push rod 14, annular groove 15, adjusting bolt 16, displacement sensor 17, labyrinth sealing structure 18, force sleeve 19, tightening nut 20, boss 21, special-shaped sealing plate 22, wing 221, V-shaped groove 222, left sealing plate 223, right sealing plate 224.

[0019] Example 1 This embodiment is basically as Figures 1-4 As shown: A detachable rotor engine seal test device includes a mounting slot 4, a bracket 7, a pressure sensor 6, and a displacement sensor 17: Mounting slot seat 4 includes a seat body 2 with a mounting slot defined on one side. Seat body 2 is mounted to the engine block. A labyrinth seal 18 is provided on the side of seat body 2 where it is inserted into and contacts the engine block. Seat body 2 defines a cavity within seat body 2. The mounting slot and cavity are separated by a barrier wall 3. Barrier wall 3 defines a first circular through-hole connecting the mounting slot and cavity. A push rod 14 is slidably connected within the through-hole.

[0020] Also includes a mounting slot seat 4 that matches the mounting slot, as shown in the attached Figure 3As shown, the mounting slot 4 is provided with a sealing slot for installing a mirror-image sealing sheet, and a second through hole 10 communicating with the first through hole is provided at the bottom of the sealing slot. In this embodiment, a plurality of mounting slots 4 are included, and the width of the sealing slot on each mounting slot 4 is different to accommodate the replacement of radial sealing sheets 11 of different widths. Sealing sheets of the same width but different thicknesses can be adapted by adjusting the depth of the sealing slot. During installation, since the radial sealing sheet 11 is usually U-shaped, the arc-shaped, sheet-like spring 12 is clamped between the concave side of the radial sealing sheet 11 and the force-bearing sheet 13. The other side of the force-bearing sheet 13 is connected to a push rod 14, which is then connected to a pressure sensor 6, which is then connected to an adjusting bolt 16, which is then connected to a displacement sensor 17. The structure is more reliable and easier to adjust the elastic force of the spring 12.

[0021] The mounting groove seat 4 is provided with ribs 9 on both sides, and a slide groove is provided in the mounting groove to slide with the ribs 9. The ribs 9 slide in the slide groove. Different radial sealing sheets 11 can be pre-installed on different mounting groove seats 4. When replacement is required, the radial sealing sheet 11 and the mounting groove seat 4 are replaced as a whole, making it easier to remove and install.

[0022] The push rod 14 includes a large diameter end and a small diameter end. Figure 4 As shown, the radial dimension of the large-diameter end is larger than that of the small-diameter end, with the large-diameter end facing the pressure sensor 6. The large-diameter end of the push rod 14 is slidably connected to the first through-hole, and the small-diameter end is slidably connected to the second through-hole 10. Annular grooves 15 are defined on both the large-diameter and small-diameter ends, with O-rings installed in the annular grooves 15 via an interference fit. This ensures that the push rod 14 remains sealed even during sliding, ensuring the airtightness of the entire device and the rotary engine 1. In other embodiments, the push rod 14 may be integrally formed with the load-bearing plate 13.

[0023] The pressure sensor 6 is installed in the cavity, with one end abutting against the large diameter end of the push rod 14 and the other end abutting against the adjusting bolt 16.

[0024] The bracket 7 is mounted on the side of the base body 2 away from the mounting groove. The side of the bracket 7 close to the base body 2 is provided with an adjusting bolt 16, which is threadedly connected to the bracket 7 of the base body 2. The side of the bracket 7 away from the adjusting bolt 16 is provided with a displacement sensor 17, and the working end of the displacement sensor 17 abuts against the adjusting bolt 16. Ear seats 5 are provided on both sides of the base body 2, and mounting holes are opened on the ear seats 5. The entire device is fixed to the side of the rotary engine 1 with screws through the mounting holes, as shown in the attached figure. Figure 2 shown.

[0025] During the operation of the rotary engine 1, the rotor is always in contact with the radial sealing plate 11. Different contact positions result in different compressions of the spring 12, that is, different elastic forces. During the compression process, the force will be transmitted to the pressure sensor 6. According to the principle of mechanical balance, the force of the pressure sensor 6 is the force of the spring 12. The real-time changing force of the pressure sensor 6 corresponds to the real-time changing elastic force of the spring 12, thereby realizing real-time monitoring of the elastic force of the spring 12.

[0026] The rotor rotates to a position where it contacts the radial sealing sheet 11 and the spring 12 is not compressed. The adjusting bolt 16 is rotated to squeeze the pressure sensor 6, transmitting force to the spring 12 through the push rod 14. The spring force can be obtained simultaneously through the principle of mechanical balance, and the compression of the spring 12 can be obtained through the displacement sensor 17. In this way, the spring force can be changed to achieve different sealing effects without disassembling the machine to replace the spring 12.

[0027] This embodiment not only facilitates replacement of radial sealing sheets 11 of different widths and thicknesses for testing and real-time monitoring of the elastic force of the spring 12 , but also enables adjustment of the elastic force of the spring 12 at any time before and during the test, and greatly reduces the workload of disassembling and assembling the radial sealing sheet 11 .

[0028] Example 2 This embodiment is basically as shown in the attached Figure 5 , Attachment Figure 6 As shown (the seat body 2 is thinned in the figure): the only difference from the first embodiment is that the cavity remains open on both sides facing the rotor engine end cover. This embodiment also includes an end-to-end sealing compensation mechanism, which includes a boosting sleeve 19 and a shaped sealing sheet 22. The shaped sealing sheet 22 is provided on both sides of the cavity opening. The boosting sleeve 19 is open at one end and closed at the other. The opening of the boosting sleeve 19 is larger than that of the pressure sensor 5, allowing the pressure sensor 6 to be accommodated and pressed within the boosting sleeve 19. The end-to-end sealing compensation mechanism does not affect the elastic force of the simulated radial sealing sheet 11 adjusted by the adjustment bolt 16 during the boosting compensation end face sealing.

[0029] The closed end of the booster sleeve 19 has a threaded hole, allowing it to be threadedly connected to the adjusting bolt 16. The outer surface of the booster sleeve 19 is frusto-conical, with the end surface facing the radial seal 11 having a smaller area than the end surface facing away from the radial seal 11. A hexagonal boss 21 is integrally formed on the sealed end of the booster sleeve 19 to facilitate turning the booster sleeve 19 from the cavity opening with a wrench. The adjusting bolt 16 also has a compression nut 20. Pressing the boss 21 with the compression nut 20 before sealing compensation couples the adjustment of the radial seal 11's elastic force with the sealing compensation. Specifically, as the adjusting bolt 16 rotates, the greater the elastic force of the radial seal 11, the greater the supporting pressure of the booster sleeve 19. Furthermore, as the elastic force of the radial seal 19 increases, the internal pressure of the rotary engine increases, which in turn increases the sealing requirements of the end surface. Therefore, after coupling, operation is simplified. After compensating the sealing performance, the boss 21 is compressed with the compression nut 20 , thereby decoupling the elastic force of the radial sealing sheet 11 from the compensating sealing performance, making the adjustment more flexible.

[0030] A V-shaped groove 222 is provided in the middle of the special-shaped sealing piece 22 to match the boosting sleeve 19, so that when the boosting sleeve is inserted into the V-shaped groove 222, the special-shaped sealing piece 22 can expand outward along both ends and the radial direction of the boosting sleeve 19. The special-shaped sealing piece 22 is separated from the middle of the V-shaped groove 222 into a left sealing piece 223 and a right sealing piece 224. The separation between the left sealing piece 223 and the right sealing piece 224 is serrated. The special-shaped sealing piece is also provided with fins 21 (attached) on both sides. Figure 5 and attached Figure 6 For clarity, the wings are thickened.)

[0031] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A detachable rotor engine seal test device, characterized by: Includes mounting slots, brackets, pressure sensors and displacement sensors: The mounting groove seat comprises a seat body, a mounting groove is formed on a side surface of one side of the seat body, and the mounting groove is used to install a radial sealing plate and / or a spring; a cavity is formed in the seat body, and the mounting groove and the cavity are separated by a barrier wall, and a first through hole is formed on the barrier wall to connect the mounting groove and the cavity, and a push rod is slidably connected in the through hole; The pressure sensor is installed in the cavity, and the ejector rod abuts against the pressure sensor; The bracket is installed on the side of the base body away from the mounting groove. An adjusting bolt is provided on the side of the bracket close to the base body. The adjusting bolt is threadedly connected to the base body and / or the bracket. A displacement sensor is provided on the side of the bracket away from the adjusting bolt. The working end of the displacement sensor is against the adjusting bolt.

2. The detachable rotor engine sealing piece test device according to claim 1, characterized in that: It also includes a mounting groove seat that matches the mounting groove. The mounting groove seat is provided with a sealing sheet groove for installing a mirror sealing sheet. The bottom of the sealing sheet groove is provided with a second through hole that communicates with the first through hole.

3. The detachable rotor engine sealing piece test device according to claim 2, characterized in that: A stress-bearing sheet is also provided in the sealing sheet groove.

4. The detachable rotor engine seal plate test device according to claim 1, characterized in that: The push rod includes a large diameter end and a small diameter end, the radial dimension of the large diameter end is larger than the radial dimension of the small diameter end, and the large diameter end faces the pressure sensor.

5. The detachable rotor engine sealing piece test device according to claim 4, characterized in that: A sealing ring is installed on the top rod; a labyrinth sealing structure is provided on the side of the seat body.

6. The detachable rotor engine sealing piece testing device according to claim 3, characterized in that: Retaining edges are provided on both sides of the installation slot seat, and a sliding groove that is slidably matched with the retaining edges is provided in the installation slot, and the retaining edges and the sliding groove are slidably matched.

7. The detachable rotor engine sealing piece testing device according to claim 1, characterized in that: The cavity remains open on both sides of the rotor engine end cover; it also includes an end-to-end sealing compensation mechanism, which includes a boosting sleeve and a special-shaped sealing piece. The boosting sleeve is open at one end and closed at the other end. The opening size of the boosting sleeve is larger than the size of the pressure sensor. A threaded hole is provided on the closed end of the boosting sleeve so that the boosting sleeve is threadedly connected to the adjusting bolt, and the outer surface of the boosting sleeve is frustum-shaped; a V-shaped groove is provided in the middle of the special-shaped sealing piece to match the outer tube of the boosting sleeve, so that when the boosting sleeve is inserted into the V-shaped groove, the special-shaped sealing piece can expand outward along the two ends of the sealing piece and the radial direction of the boosting sleeve.

8. The detachable rotor engine sealing piece testing device according to claim 7, characterized in that: The adjusting bolt is also provided with a plurality of compression nuts; and special-shaped sealing sheets are provided on both sides of the cavity opening.

9. The detachable rotor engine sealing piece testing device according to claim 8, characterized in that: The special-shaped sealing sheet is separated from the middle of the V-shaped groove into a left sealing sheet and a right sealing sheet, and the separation portion between the left sealing sheet and the right sealing sheet is serrated.

10. The detachable rotor engine sealing piece testing device according to claim 9, characterized in that: Wings are also provided on both sides of the special-shaped sealing piece.

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