Testing device for combustion chambers with different sizes

Abstract

The utility model relates to a testing device for combustion chambers with different sizes, and solves the problems that the combustion position is fixed and cannot be moved during a test, and only a combustion chamber with a certain size can be clamped. According to the utility model, the lead screw nut design is adopted, so that a combustion chamber for a combustion test is assembled on the device, the horizontal position of the combustion can be determined as required, and the test device can be used for the combustion test of the combustion chambers with different sizes through the variable-diameter clamping jaw design; and the vertical position of the combustion position of the combustion cavity is determined by connecting the screw rod with the connecting bracket.

Description

Technical Field

[0001] This utility model relates to the field of downhole tools technology for oil and gas wells, and more specifically, to a test device for combustion chambers of different sizes. Background Technology

[0002] There are many types of downhole tubing cutting tools, and their working principles and applications have become a research hotspot in recent years. When researching and designing tools that use high-temperature, high-pressure metal fluids generated by pyrotechnic combustion, it is usually necessary to investigate the performance of the pyrotechnics and the reliability of the tool structure. However, current testing methods are limited in function and conditions. Therefore, a testing device capable of providing multi-functional experimental conditions is needed. A testing device for combustion chambers of different sizes is required, which can achieve testing of different combustion chamber sizes by changing the grippers, resulting in high testing efficiency. Utility Model Content

[0003] This utility model provides a test device for combustion chambers of different sizes, including a frame, a lead screw, a bearing, a positioning screw, a connecting bracket, a combustion fixing frame, an upper clamp, a lower clamp, a bearing end cover, and a retaining ring.

[0004] The connecting bracket of this utility model is connected to the frame via a lead screw; the lead screw is connected to the frame via a retaining ring and a bearing; the lower clamping jaw is connected to the connecting support frame via a combustion support frame; the combustion support frame and the connecting bracket are connected via a screw; the upper clamping jaw and the lower clamping jaw are connected via a screw; and the positioning screw is connected to the frame.

[0005] The bearing described in this invention is axially positioned via the bearing end cap.

[0006] The lead screw of this invention achieves axial positioning through a retaining ring.

[0007] Compared with the prior art, the present invention has the following advantages:

[0008] (1) The present invention adopts a screw and nut design, which enables the combustion chamber used for combustion test to be assembled on the device and can more accurately determine the horizontal position of combustion.

[0009] (2) This utility model, through the design of a variable diameter gripper, enables the test device to be used for combustion tests in combustion chambers of different sizes.

[0010] (3) The present invention has a guide rail groove on the combustion support frame, which is connected to the connecting bracket by a screw to determine the upper and lower positions of the combustion chamber. Attached Figure Description

[0011] Figure 1This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0013] Figure 3 In this invention Figure 2 A schematic diagram of the local structure at 8 locations;

[0014] Figure 4 In this invention Figure 2 A schematic diagram of the partial structure of 9;

[0015] Figure 5 This is a schematic diagram of the frame structure in this invention;

[0016] Figure 6 This is a schematic diagram of the upper gripper structure in this invention;

[0017] Figure 7 This is a schematic diagram of the lower gripper structure in this invention;

[0018] Figure 8 This is a schematic diagram of the combustion support frame in this invention;

[0019] Figure 9 This is a schematic diagram of the connecting support frame in this invention;

[0020] Figure 10 This is a schematic diagram of the upper lead screw in this invention;

[0021] In the diagram: 1. Frame; 2. Positioning screw; 3. Upper gripper; 4. Lower gripper; 5. Combustion support frame; 6. Connecting bracket; 7. Lead screw; 8-1. Left bearing end cover; 8-2. Rolling bearing; 8-3. Retaining ring; 9-1. Retaining ring; 9-2. Rolling bearing; 9-3. Right bearing end cover. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Specific Implementation Method 1: (Attached) Figure 1-4 As shown, this utility model provides a test device for combustion chambers of different sizes, including a frame 1, a positioning screw 2, an upper clamp 3, a lower clamp 4, a combustion support frame 5, a connecting bracket 6, a lead screw 7, a left bearing end cover 8-1, a rolling bearing 8-2, a retaining ring 8-3, a retaining ring 9-1, a rolling bearing 9-2, and a right bearing end cover 9-3.

[0024] Specific Implementation Two: As per Appendix Figure 1 Appendix Figure 2As shown, the positioning screw 2 is threaded to the frame and used to fix the perforated material in the combustion test. The upper jaw 3 and lower jaw 4 are connected to the combustion support frame 5 by screws. The combustion support frame 5 and the connecting bracket 6 are connected by screws and nuts. The connecting bracket and the lead screw 7 are threadedly connected to the frame 1. The positioning screw 2, threaded to the frame, can be screwed to different lengths to position test materials of different sizes that are perforated by the high-temperature jet. The lower jaw 4, with different stepped sections or inclined surfaces, is connected to the upper jaw 3 by screws and used to clamp combustion chambers of different sizes. The combustion support frame 5 and the connecting bracket 6 are threaded together. The combustion support frame 5 has two guide rail grooves to adjust the position of the combustion chamber in the vertical direction. The connecting bracket 6 is connected to the lead screw 7, and through threaded transmission, adjusts the position of the combustion chamber in the horizontal direction.

[0025] Specific Implementation Three: By Appendix Figure 3 Appendix Figure 4 As shown, the lead screw is axially positioned at both ends of the rolling bearings 8-2 and 9-2 by the retaining rings 8-3 and 9-1. The rolling bearing 8-2 is axially positioned by the machine frame stage 1 and the left bearing end cover 8-1. The rolling bearing 9-2 is axially positioned by the machine frame stage 1 and the right bearing end cover 9-3.

Claims

1. A test apparatus for combustion chambers of different sizes, characterized in that: It includes a frame, a lead screw, a bearing, a positioning screw, a connecting bracket, a combustion fixing bracket, an upper clamp, a lower clamp, a bearing end cap, and a retaining ring; the positioning screw (2) is threaded to the frame (1), and the upper clamp (3) and the lower clamp (4) are threaded to the combustion support frame (5); the combustion support frame (5) is connected to the connecting bracket (6) by a screw and nut, and the connecting bracket (6) is threaded to the lead screw (7) and assembled onto the frame (1); the lead screw (7) is connected to the frame (1) by a retaining ring and a bearing.

2. The test apparatus for combustion chambers of different sizes according to claim 1, characterized in that: The connecting bracket (6) and the lead screw (7) are connected to the frame (1) through threaded engagement, so that the combustion chamber used for combustion testing is assembled on the device and the horizontal position of the combustion chamber can be determined as needed.

3. The test apparatus for combustion chambers of different sizes according to claim 1, characterized in that: By designing a lower gripper (4) that allows for variable diameter, the test device can be used for combustion tests in combustion chambers of different sizes.

4. The test apparatus for combustion chambers of different sizes according to claim 1, characterized in that: A guide rail groove is provided on the combustion support frame (5), which is connected to the connecting bracket (6) by a screw to realize the vertical position determination of the combustion chamber.

5. The test apparatus for combustion chambers of different sizes according to claim 1, characterized in that: The positioning screw (2) is threaded onto the frame (1). By screwing in different lengths, it is used to position test materials of different sizes that are pierced by high-temperature jets.

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