A device for testing the pressure resistance of a vacuum tube
By designing limiting and testing mechanisms that adapt to insulation pipes of different diameters, the problem of frequent hydraulic rod replacement in existing devices has been solved, realizing the flexibility and accuracy of insulation pipe pressure resistance testing, and improving testing efficiency and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN SHUIZHUANGYUAN PIPE IND CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-31
AI Technical Summary
In existing thermal insulation pipe compression testing devices, the fixed-stroke hydraulic rod cannot meet the extension length requirements of thermal insulation pipes of different diameters, resulting in the need to replace the hydraulic rod for each test, which wastes time and manpower and affects the test accuracy.
A thermal insulation pipe pressure testing device was designed, comprising a main body, a limiting mechanism, and a testing mechanism. Utilizing components such as a hydraulic telescopic rod, a servo motor, a slider, and a limiting block, it achieves stable testing of thermal insulation pipes of different diameters. Through the cooperation of the sliding groove and the limiting hole, it adapts to different length requirements, and achieves precise control and data recording through a grating sensor and a touch panel.
It enables flexible adaptability testing of insulation pipes with different diameters, improves the accuracy and efficiency of testing, reduces the time required to replace hydraulic rods, and ensures the stability and precision of testing.
Smart Images
Figure CN224581261U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing device technology, specifically a pressure resistance testing device for thermal insulation pipes. Background Technology
[0002] As an important pipeline facility for transporting media such as hot water and steam, the pressure resistance of insulated pipes directly affects the safe operation and service life of the pipeline system. Pressure testing is a crucial step in ensuring product quality during the production process of insulated pipes.
[0003] Based on the above, the inventors have discovered the following problems: The core pressure-applying component of existing thermal insulation pipe pressure testing devices is mostly a hydraulic rod with a fixed stroke length. During testing, the extension length of the hydraulic rod needs to be adjusted according to the diameter of the thermal insulation pipe to ensure that the pressure is applied evenly to the testing area. When testing thermal insulation pipes of different diameters, due to potentially large differences in pipe diameter, the existing fixed-stroke hydraulic rod cannot meet the different extension length requirements, necessitating the replacement with a hydraulic rod of the corresponding stroke length. For example, a short-stroke hydraulic rod is required when testing small-diameter thermal insulation pipes, while a long-stroke hydraulic rod is required when testing large-diameter thermal insulation pipes. Each replacement requires disassembly, installation, and debugging of the hydraulic system, which not only consumes a significant amount of time and manpower but may also affect testing accuracy due to improper installation.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a pressure resistance testing device for thermal insulation pipes, in order to achieve a more practical purpose. Utility Model Content
[0005] The purpose of this invention is to provide a pressure resistance testing device for thermal insulation pipes, so as to solve the problem mentioned in the background art that the existing fixed stroke hydraulic rods cannot meet the different extension length requirements and the hydraulic rods with corresponding stroke lengths must be replaced.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: A pressure resistance testing device for thermal insulation pipes includes a main body, a limiting mechanism, and a testing mechanism. The main body includes a pair of gantry frames, with a truss fixedly installed between the top ends of the pair of gantry frames. Sliding grooves are formed on both sides of the interior of each gantry frame, and several limiting holes are formed on both sides of each gantry frame. The limiting mechanism includes a horizontal plate, with sliders installed at both ends of each horizontal plate. The two ends of a pair of sliders are slidably connected to the two pairs of sliding grooves, respectively. Limiting blocks are slidably installed at both ends of each slider, with one end of each limiting block extending to the outside of the slider and inserting into the corresponding limiting hole. The testing mechanism includes a pressure plate, with a pair of sliding rods fixedly installed on both sides of the upper end of the pressure plate. The two pairs of sliding rods are slidably inserted into the two sides of the horizontal plate, respectively. A pressure sensor is fixedly installed at the bottom end of the pressure plate, and a base plate is fixedly installed at the bottom end of the pressure sensor.
[0007] Furthermore, a hydraulic telescopic rod is inserted at the center of the upper end of the horizontal plate, and the output end of the hydraulic telescopic rod is fixedly connected to the top of the pressure plate.
[0008] The beneficial effect of adopting the above-mentioned further solution is that the hydraulic telescopic rod on the horizontal plate provides a stable driving force for the pressure plate, pushing the pressure plate down along the slide bar, so that the pressure is applied evenly to the insulation pipe. The hydraulic drive output force is large and controllable, which can simulate pressure tests of different intensities and improve the test range and accuracy.
[0009] Furthermore, partitions are fixedly installed on both sides of the slider, and an internally threaded sleeve is rotatably inserted between each pair of partitions.
[0010] The beneficial effect of adopting the above-mentioned further solution is that the partition inside the slider separates an independent space, providing stable support for the internal threaded sleeve, ensuring that it does not deviate when rotating, while avoiding mutual interference between internal components, and ensuring smooth and reliable extension and retraction of the limit block.
[0011] Furthermore, the threads at both ends of the internal threaded sleeve are opposite, and both ends of the internal threaded sleeve are threadedly connected to screws. The opposite ends of each pair of screws are respectively fixedly connected to the adjacent limiting block.
[0012] The beneficial effect of adopting the above-mentioned further solution is that the threads at both ends of the internal thread sleeve are opposite, and when rotated, they can drive the screws at both ends to move synchronously towards or away from each other, thereby allowing the limit blocks to be inserted into or disengaged from the limit holes at the same time, realizing the rapid fixing or unlocking of the slider, which is highly efficient and the actions on both sides are synchronized, thus improving the stability of the limit mechanism.
[0013] Furthermore, the top of each slider is rotatably connected to a first bevel gear, and the internal threaded sleeve is fitted with a second bevel gear on the side near the first bevel gear, with the second bevel gear meshing with the first bevel gear.
[0014] The beneficial effect of adopting the above-mentioned further solution is that the meshing of the first bevel gear and the second bevel gear can change the power direction from vertical to horizontal, so that the driving force of the servo motor can be efficiently transmitted to the internal threaded sleeve. The gear transmission accuracy is high, ensuring that the extension and retraction distance of the limit block is consistent and improving the accuracy of limit positioning.
[0015] Furthermore, each slider is fixedly equipped with a servo motor at its upper end, and the output end of the servo motor is connected to the first bevel gear transmission.
[0016] The beneficial effect of adopting the above-mentioned further solution is that the servo motor provides power to the internal threaded sleeve, and controls the movement of the limit block through gear transmission. The servo motor has high control precision and can accurately adjust the extension and retraction of the limit block, realizing the rapid switching of the slider at different limit hole positions and improving the degree of automation of operation.
[0017] Furthermore, a winch is fixedly installed on the bottom side of the truss, a connecting frame is installed on the upper end of the cross plate, and the cable hook of the winch is sleeved with the top end of the connecting frame.
[0018] The beneficial effect of adopting the above-mentioned further solution is that the winch on the truss can assist in raising or lowering the horizontal plate and adjusting the height of the horizontal plate by cooperating with the connecting frame of the horizontal plate through the cable.
[0019] Furthermore, a grating sensor is installed on one side of the upper end of the slider, and a grating ruler is embedded inside one of the grooves on one side of the grating sensor, with the probe of the grating sensor facing the grating ruler.
[0020] The beneficial effect of adopting the above-mentioned further solution is that the grating sensor on the slider, in conjunction with the grating ruler in the slide groove, can monitor the height position of the horizontal plate in real time, so that the limit block can be accurately inserted into the interior of the limit hole.
[0021] Furthermore, a bracket is fixedly installed between the bottom ends of the gantry frame, and a touch panel is fixedly installed on one side of one of the gantry frames.
[0022] The beneficial effects of adopting the above-mentioned further solution are that the bracket at the bottom of the gantry provides stable support for the insulation pipe, ensuring that the insulation pipe is placed stably during testing; the touch panel centrally controls the actions of each component, can set test parameters, and display pressure and displacement data, making the operation intuitive and convenient, improving testing efficiency and the convenience of data recording.
[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: The main body of this thermal insulation pipe compressive strength testing device consists of a pair of gantry frames and a truss structure forming a stable testing frame. A sliding groove guides the movement of the limiting mechanism. The horizontal plate of the limiting mechanism slides along the sliding groove via a slider, and engages with the limiting block and limiting hole, allowing it to be fixed at different heights to accommodate testing needs of thermal insulation pipes of different lengths. The pressure plate of the testing mechanism slides along the horizontal plate via a sliding rod, and a pressure sensor, in conjunction with the base plate, accurately detects the pressure borne by the thermal insulation pipe, thus achieving stable testing of the thermal insulation pipe's compressive strength performance. Balancing flexibility and measurement accuracy, the hydraulic telescopic rod on the horizontal plate provides a stable driving force for the pressure plate, pushing it down along the slide bar to ensure even pressure distribution on the insulation pipe. The hydraulic drive output force is large and controllable, simulating pressure tests of varying intensities, thus improving the testing range and accuracy. The winch on the truss, connected to the horizontal plate's connecting frame via cables, assists in raising or lowering the horizontal plate and adjusting its height. The grating sensor on the slider, in conjunction with the grating ruler in the slide groove, monitors the horizontal plate's height in real time, allowing the limit block to be precisely inserted into the limit hole. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of the thermal insulation pipe pressure resistance testing device disclosed in this embodiment of the utility model. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the thermal insulation pipe pressure resistance testing device disclosed in this embodiment of the utility model. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the thermal insulation pipe pressure resistance testing device disclosed in this embodiment of the utility model. Figure 3 ; Figure 4 This is a schematic cross-sectional view of the slider of the thermal insulation pipe pressure resistance testing device disclosed in this embodiment of the utility model; Figure 5 The thermal insulation pipe pressure resistance testing device disclosed in this utility model embodiment Figure 2 An enlarged schematic diagram of the A structure.
[0025] In the diagram: 1. Main body; 101. Gantry frame; 102. Truss; 103. Touch panel; 104. Bracket; 105. Limiting hole; 106. Slide groove; 107. Grating ruler; 108. Winch; 2. Limiting mechanism; 201. Horizontal plate; 202. Slider; 203. Servo motor; 204. Connecting frame; 205. Hydraulic telescopic rod; 206. Limiting block; 207. Partition plate; 208. Internal threaded sleeve; 209. Screw; 210. Second bevel gear; 211. First bevel gear; 212. Grating sensor; 3. Testing mechanism; 301. Pressure plate; 302. Pressure sensor; 303. Base plate; 304. Slide rod. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a pressure resistance testing device for thermal insulation pipes, comprising a main body 1, a limiting mechanism 2, and a testing mechanism 3. The main body 1 includes a pair of gantry frames 101, with a truss 102 fixedly installed between the top ends of the pair of gantry frames 101. Slide grooves 106 are provided on both sides of the interior of each gantry frame 101, and several limiting holes 105 are provided on both sides of each gantry frame 101. The limiting mechanism 2 includes a horizontal plate 201, with sliders 202 installed at both ends of the horizontal plate 201. The ends of a pair of sliders 202 are respectively connected to two pairs of slide grooves. The 106 sliding connection has a limit block 206 slidably installed at both ends of the slider 202. One end of the limit block 206 extends to the outside of the slider 202 and is inserted into the limit hole 105 at the corresponding position. The test mechanism 3 includes a pressure plate 301. A pair of slide rods 304 are fixedly installed on both sides of the upper end of the pressure plate 301. The two pairs of slide rods 304 are slidably inserted into both sides of the horizontal plate 201. A pressure sensor 302 is fixedly installed at the bottom end of the pressure plate 301. A base plate 303 is fixedly installed at the bottom end of the pressure sensor 302.
[0028] As an embodiment of this utility model, a hydraulic telescopic rod 205 is further inserted at the upper center of the horizontal plate 201. The output end of the hydraulic telescopic rod 205 is fixedly connected to the top of the pressure plate 301. The hydraulic telescopic rod 205 on the horizontal plate 201 provides a stable driving force for the pressure plate 301, pushing the pressure plate 301 down along the slide rod 304, so that the pressure is evenly applied to the heat preservation pipe. The hydraulic drive output force is large and controllable, which can simulate pressure tests of different intensities and improve the test range and accuracy.
[0029] As an embodiment of this utility model, further, partitions 207 are fixedly installed on both sides of the slider 202. An internal threaded sleeve 208 is rotatably inserted between each pair of partitions 207. The partitions 207 in the slider 202 separate independent spaces, providing stable support for the internal threaded sleeve 208, ensuring that it does not deviate when rotating, while avoiding mutual interference between internal components, and ensuring that the extension and retraction of the limit block 206 is smooth and reliable.
[0030] As an embodiment of this utility model, the threads at both ends of the internal threaded sleeve 208 are set in opposite directions, and both ends of the internal threaded sleeve 208 are threadedly connected to screws 209. The opposite ends of each pair of screws 209 are fixedly connected to the adjacent limiting block 206. Since the threads at both ends of the internal threaded sleeve 208 are opposite, when rotated, the screws 209 at both ends can move synchronously towards or away from each other, thereby causing the limiting block 206 to simultaneously insert into or disengage from the limiting hole 105, realizing the rapid fixing or unlocking of the slider 202. The operation is efficient and the actions on both sides are synchronized, improving the stability of the limiting mechanism 2.
[0031] As an embodiment of this utility model, the top of the slider 202 is rotatably connected to a first bevel gear 211, and the internal threaded sleeve 208 is fitted with a second bevel gear 210 on the side near the first bevel gear 211. The second bevel gear 210 meshes with the first bevel gear 211. The meshing of the first bevel gear 211 and the second bevel gear 210 can change the power direction from vertical to horizontal, so that the driving force of the servo motor 203 is efficiently transmitted to the internal threaded sleeve 208. The gear transmission accuracy is high, ensuring that the extension and retraction distance of the limit block 206 is consistent and improving the accuracy of the limit positioning.
[0032] As an embodiment of this utility model, a servo motor 203 is fixedly installed on the upper end of the slider 202. The output end of the servo motor 203 is connected to the first bevel gear 211 for transmission. The servo motor 203 provides power to the internal threaded sleeve 208 and controls the movement of the limit block 206 through gear transmission. The servo motor 203 has high control precision and can accurately adjust the extension and retraction of the limit block 206, realizing the rapid switching of the slider 202 at different limit hole 105 positions and improving the degree of automation of operation.
[0033] As an embodiment of this utility model, a winch 108 is fixedly installed on the bottom side of the truss 102, and a connecting frame 204 is installed on the upper end of the horizontal plate 201. The cable hook of the winch 108 is sleeved with the top end of the connecting frame 204. The winch 108 on the truss 102 cooperates with the connecting frame 204 of the horizontal plate 201 through the cable, which can assist in raising or lowering the horizontal plate 201 and adjusting the height of the horizontal plate 201.
[0034] As an embodiment of this utility model, a grating sensor 212 is further installed on one side of the upper end of the slider 202. A grating ruler 107 is embedded in the interior of one of the slide grooves 106 on one side of the grating sensor 212. The probe of the grating sensor 212 faces the grating ruler 107. The grating sensor 212 on the slider 202 cooperates with the grating ruler 107 in the slide groove 106 to monitor the height position of the horizontal plate 201 in real time, so that the limiting block 206 can be accurately inserted into the interior of the limiting hole 105.
[0035] As an embodiment of this utility model, a bracket 104 is fixedly installed between the bottom ends of the gantry 101, and a touch panel 103 is fixedly installed on one side of one of the gantry 101. The bracket 104 at the bottom end of the gantry 101 provides stable support for the insulation tube, ensuring that the insulation tube is placed stably during testing. The touch panel 103 centrally controls the actions of each component, can set test parameters, and display pressure and displacement data. The operation is intuitive and convenient, improving testing efficiency and the convenience of data recording.
[0036] Specifically, the working principle of this insulation pipe pressure resistance testing device is as follows: During use, the insulation pipe is first placed on the bracket 104. The servo motor 203 is controlled by the touch panel 103 to drive the first bevel gear 211 to mesh with the second bevel gear 210, causing the internal threaded sleeve 208 to rotate. This causes the screws 209 at both ends to disengage the limiting block 206 from the limiting hole 105. Simultaneously, the winch 108 is started, pulling the horizontal plate 201 through the connecting frame 204, allowing the slider 202 to move along the slide groove 106 to a suitable height. The grating sensor... After the device 212 is precisely positioned in conjunction with the grating ruler 107, the servo motor 203 rotates in reverse to insert the limit block 206 into the corresponding limit hole 105 to fix the horizontal plate 201. During the test, the hydraulic telescopic rod 205 pushes the pressure plate 301 down along the slide rod 304, and the bottom plate 303 contacts the insulation pipe and applies pressure. The pressure sensor 302 detects the pressure value in real time, and the touch panel 103 displays the test data. After the pressure is applied, the user can use a flaw detector to inspect the insulation pipe and thus complete the pressure resistance test of the insulation pipe.
[0037] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.
Claims
1. A pressurized test device for a thermally insulated tube, characterized in that, The system includes a main body (1), a limiting mechanism (2), and a testing mechanism (3). The main body (1) includes a pair of gantry frames (101), and a truss (102) is fixedly installed between the top ends of the pair of gantry frames (101). Slide grooves (106) are provided on both sides of the interior of the gantry frames (101), and several limiting holes (105) are provided on both sides of the gantry frames (101). The limiting mechanism (2) includes a horizontal plate (201), and sliders (202) are installed at both ends of the horizontal plate (201). The two ends of a pair of sliders (202) are slidably connected to the two pairs of slide grooves (106) respectively. (202) has a limit block (206) slidably installed at both ends of the inner side. One end of the limit block (206) extends to the outside of the slider (202) and is inserted into the limit hole (105) at the corresponding position. The test mechanism (3) includes a pressure plate (301). A pair of slide rods (304) are fixedly installed on both sides of the upper end of the pressure plate (301). The two pairs of slide rods (304) are slidably inserted into both sides of the horizontal plate (201). A pressure sensor (302) is fixedly installed at the bottom end of the pressure plate (301). A base plate (303) is fixedly installed at the bottom end of the pressure sensor (302).
2. The pressure test device of claim 1, wherein, A hydraulic telescopic rod (205) is inserted at the center of the upper end of the horizontal plate (201), and the output end of the hydraulic telescopic rod (205) is fixedly connected to the top of the pressure plate (301).
3. The pressure test device of claim 1, wherein: The slider (202) has partitions (207) fixedly installed on both sides inside, and an internal threaded sleeve (208) is rotatably inserted between each pair of partitions (207).
4. The pressure test device of claim 3, wherein the pressure test device is configured to be used with a plurality of different types of sample tubes. The threads at both ends of the internal threaded sleeve (208) are opposite, and both ends of the internal threaded sleeve (208) are threadedly connected to screws (209). The opposite ends of each pair of screws (209) are fixedly connected to the adjacent limiting block (206).
5. The pressure test device of claim 4, wherein the pressure test device is configured to be used with a plurality of different types of sample tubes. The top of each slider (202) is rotatably connected to a first bevel gear (211), and the internal threaded sleeve (208) is fitted with a second bevel gear (210) on the side close to the first bevel gear (211), and the second bevel gear (210) meshes with the first bevel gear (211).
6. The pressure test device of claim 5, wherein the pressure test device is configured to be used with a plurality of different types of sample tubes. Each slider (202) has a servo motor (203) fixedly installed on its upper end, and the output end of the servo motor (203) is connected to the first bevel gear (211) for transmission.
7. The pressure test device of claim 1, wherein, A winch (108) is fixedly installed on the bottom side of the truss (102), and a connecting frame (204) is installed on the upper end of the cross plate (201). The cable hook of the winch (108) is sleeved with the top end of the connecting frame (204).
8. The pressure test device of claim 1, wherein, A grating sensor (212) is mounted on one side of the upper end of one of the sliders (202), and a grating ruler (107) is embedded in the interior of one of the grooves (106) on one side of the grating sensor (212), with the probe of the grating sensor (212) facing the grating ruler (107).
9. The pressure test device of claim 1, wherein, A pair of said gantry (101) between the bottom end of the fixed installation of the bracket (104), one of said gantry (101) on one side of the fixed installation of touch panel (103).