A test device for multi-diameter exhaust valve closing pressure difference experiment

Abstract

The utility model relates to exhaust valve closing pressure difference experiment technical field, concretely for a kind of test device for multi-caliber exhaust valve closing pressure difference experiment, including gas holder, the bottom end outer wall of gas holder is connected with straight pipe, another end of straight pipe is connected with elbow, the top of elbow is provided with valve, the top of valve is connected with connecting pipe, the top of connecting pipe is provided with flange device and exhaust test valve, the flange device includes multi-caliber flange, the multi-caliber flange is arranged between connecting pipe and exhaust test valve, the both ends of multi-caliber flange are penetrated and fixedly installed with locating rod, the utility model has realized the test experiment to different caliber flange on a set of equipment, greatly saved equipment manufacturing cost, reduced the occupancy of storage space, and significantly improved the versatility and efficiency of detection work, realized intensive and standardized experiment.

Description

Technical Field

[0001] This utility model relates to the field of differential pressure test technology for exhaust valves, specifically a test device for differential pressure test of multi-diameter exhaust valves. Background Technology

[0002] The differential pressure at the valve's closure is one of the key indicators for evaluating its performance and reliability. In actual production and quality inspection, since exhaust valve products typically cover multiple nominal diameters, it is necessary to conduct rigorous differential pressure tests on each type of exhaust valve.

[0003] Under current technological conditions, the conventional solution is to design and manufacture a dedicated testing device for each specific caliber exhaust valve. This "one device per caliber" approach has significant drawbacks: First, as the product caliber series increases, the number of testing devices required also increases dramatically, leading to high equipment manufacturing costs, large footprint, and low resource utilization; second, the maintenance and management of multiple devices also introduces additional complexity and operating costs. Therefore, we propose a testing device for differential pressure testing of multi-caliber exhaust valves. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of high equipment manufacturing cost, large footprint and low resource utilization in the existing technology, and to provide a test device for the differential pressure test of multi-diameter exhaust valves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A test apparatus for a differential pressure test of a multi-diameter exhaust valve includes a gas storage tank. A straight pipe is connected to the outer wall of the bottom end of the gas storage tank, and a bend is connected to the other end of the straight pipe. A valve is installed at the top end of the bend, and a connecting pipe is connected to the top of the valve. A flange device and an exhaust test valve are installed at the top end of the connecting pipe. The flange device includes a multi-diameter flange, which is positioned between the connecting pipe and the exhaust test valve. Positioning rods are fixedly installed through both ends of the multi-diameter flange. A slot is formed on the outer side of the connecting pipe and the exhaust test valve away from the positioning rods. Fixing blocks are provided on the outer walls of both ends of the positioning rods. A locking rod is fixedly installed on the bottom surface of the fixing blocks near the slot. A pressing slider is slidably installed through the slot sidewall of the connecting pipe and the exhaust test valve.

[0007] Preferably, the top surface of the connecting pipe and the exhaust test valve away from the multi-diameter flange is provided with positioning holes, and the positioning rod is located on the installation line of the positioning holes of the connecting pipe and the exhaust test valve.

[0008] Preferably, the multi-diameter flange is divided into eight different sizes to meet the testing requirements of exhaust valves of different diameters.

[0009] Preferably, the slot is L-shaped, the number of fixing blocks is four, and two are provided on the outer wall of the connecting pipe and the exhaust test valve. The three clamping rods are grouped together, and each group of clamping rods is fixedly installed at the bottom of the fixing block in a semi-circular and equidistant manner. The clamping rods have a certain degree of toughness and are composed of rectangles and right-angled triangles. The bent part of the clamping rod fits into the L-shaped bend of the slot.

[0010] Preferably, the pressing slider is located on the moving trajectory of the right-angled triangle of the lever.

[0011] By employing the above technical solution, this utility model provides a test device for differential pressure testing of multi-diameter exhaust valves. It possesses at least the following beneficial effects:

[0012] 1. This utility model enables the testing of flanges of different diameters on a single set of equipment, which greatly saves equipment manufacturing costs, reduces storage space occupation, and significantly improves the versatility and efficiency of testing work, realizing intensive and standardized testing.

[0013] 2. This utility model uses a fixing block and a clamping rod to quickly fix the connecting pipe, multi-diameter flange and exhaust test valve. Then, by pushing and pressing the slider, the clamping rod is disengaged from the L-shaped bend of the clamping groove, which realizes the quick installation and disassembly of the test flange and the exhaust valve, greatly improving the efficiency of replacing flanges of different diameters and making the operation time-saving and labor-saving. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an enlarged schematic diagram of point A in this embodiment.

[0017] Figure 3 A schematic diagram showing the different diameters of multi-diameter flanges;

[0018] Figure 4 This is an enlarged schematic diagram of the fixing block and the clamping rod.

[0019] In the diagram: 1. Gas storage tank; 2. Straight pipe; 3. Bend; 4. Valve; 5. Connecting pipe; 6. Flange device; 61. Multi-diameter flange; 62. Positioning rod; 63. Slot; 64. Fixing block; 65. Locking rod; 66. Pressing slider; 7. Exhaust test valve. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] A test apparatus for testing the differential pressure at the closure of multi-diameter exhaust valves, such as... Figures 1-4 As shown, the device includes a gas storage tank 1. A straight pipe 2 is connected to the outer wall of the bottom end of the gas storage tank 1. A bend pipe 3 is connected to the other end of the straight pipe 2. A valve 4 is installed at the top of the bend pipe 3. A connecting pipe 5 is connected to the top of the valve 4. A flange device 6 and an exhaust test valve 7 are installed at the top of the connecting pipe 5. The flange device 6 includes a multi-diameter flange 61, which is located between the connecting pipe 5 and the exhaust test valve 7. Positioning rods 62 are fixedly installed through both ends of the multi-diameter flange 61. A slot 63 is opened on the outer side of the connecting pipe 5 and the exhaust test valve 7 away from the positioning rods 62. Fixing blocks 64 are provided on the outer walls of both ends of the positioning rods 62. A locking rod 65 is fixedly installed on the bottom surface of the fixing blocks 64 near the slot 63. A pressing slider 66 is slidably installed through the side wall of the slot 63 of the connecting pipe 5 and the exhaust test valve 7.

[0023] Positioning holes are provided on the top surface of the connecting pipe 5 and the exhaust test valve 7 on the side away from the multi-diameter flange 61, and the positioning rod 62 is located on the installation line of the positioning holes of the connecting pipe 5 and the exhaust test valve 7.

[0024] The multi-bore flange 61 is available in eight different sizes to meet the testing requirements of exhaust valves of different diameters.

[0025] The slot 63 is L-shaped, and there are four fixing blocks 64. Two are installed on the outer wall of the connecting pipe 5 and the exhaust test valve 7. The three clamping rods 65 are grouped together. Each group of clamping rods 65 is fixedly installed at the bottom of the fixing block 64 in a semi-circular and equidistant manner. The clamping rods 65 have a certain degree of toughness and are composed of rectangles and right triangles. The bend of the clamping rods 65 fits into the L-shaped bend of the slot 63.

[0026] The slider 66 is located on the moving track of the right triangle of the lever 65.

[0027] This utility model discloses a test device for a multi-diameter exhaust valve closed-valve differential pressure test. When the exhaust valve needs to undergo a closed-valve differential pressure test, the following steps are taken according to standard requirements: First, install the straight pipe 2 on the outer wall of the bottom of the gas storage tank 1; then connect the bent pipe 3 to the straight pipe 2, with the test pipe facing upwards; then connect the valve 4 to the bent pipe 3, primarily for quickly cutting off the gas source; finally, connect the connecting pipe 5 to the valve 4 to ensure the gas source is direct and prevent the test from being affected by airflow turbulence; depending on the test diameter (DN50-3...), the device can be used for various tests. (00 caliber), simply install flanges of different calibers. After inserting the positioning rod 62 on the multi-caliber flange 61 to be tested into the positioning hole on the connecting pipe 5, align the positioning hole on the exhaust test valve 7 with the positioning rod 62 on the multi-caliber flange 61 and lower it. Insert the fixing block 64 from the top and bottom of the positioning rod 62 respectively. At the same time, insert the clamping rod 65 into the clamping groove 63 of the connecting pipe 5 and the exhaust test valve 7. After moving to the top, the clamping rod 65, which has a certain degree of toughness, will be locked at the L-shaped bend of the clamping groove 63, thus completing the connection of the multi-caliber flange 5 and the exhaust test valve 7. The multi-diameter flange 61 and the exhaust test valve 7 can be quickly installed. When it is necessary to replace the multi-diameter flange 61, simply press the three pressing sliders 66 simultaneously. After the pressing sliders 66 contact the right-angled triangle of the clamping rod 65, the clamping rod 65 deforms and disengages from the L-shaped bend of the clamping groove 63. Then, by pulling out the fixing block 64, the connection between the connecting pipe 5, the multi-diameter flange 61, and the exhaust test valve 7 can be quickly released, thereby achieving the effect of quickly replacing the multi-diameter flange 61. Through the fixing block 64 and the clamping rod 65, the connecting pipe... 5. The multi-diameter flange 61 and the exhaust test valve 7 are quickly fixed together. Then, the sliding block 66 is pushed to disengage the clamp 65 from the L-shaped bend of the clamp slot 63, realizing the rapid installation and disassembly of the test flange and the exhaust valve. This greatly improves the efficiency of replacing flanges of different diameters, making the operation more time-saving and labor-saving. At the same time, it also realizes the testing of flanges of different diameters on a single set of equipment, which greatly saves equipment manufacturing costs, reduces storage space occupation, and significantly improves the versatility and efficiency of testing work, realizing intensive and standardized experiments.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test apparatus for a differential pressure test of a multi-diameter exhaust valve, comprising a gas storage tank (1), characterized in that: The bottom outer wall of the gas storage tank (1) is connected to a straight pipe (2), and the other end of the straight pipe (2) is connected to a bend pipe (3). A valve (4) is provided at the top of the bend pipe (3), and a connecting pipe (5) is connected to the top of the valve (4). A flange device (6) and an exhaust test valve (7) are provided at the top of the connecting pipe (5). The flange device (6) includes a multi-diameter flange (61), which is located between the connecting pipe (5) and the exhaust test valve (7). A positioning rod (62) is fixedly installed through both ends of the multi-diameter flange (61). A slot (63) is opened on the outer side of the connecting pipe (5) and the exhaust test valve (7) away from the positioning rod (62). A fixing block (64) is provided on the outer wall of both ends of the positioning rod (62). A locking rod (65) is fixedly installed on the bottom surface of the fixing block (64) near the slot (63). A pressing slider (66) is slidably installed through the side wall of the slot (63) of the connecting pipe (5) and the exhaust test valve (7).

2. The test apparatus for the differential pressure test of a multi-diameter exhaust valve according to claim 1, characterized in that: The connecting pipe (5) and the exhaust test valve (7) are both provided with positioning holes on the top surface of the side end away from the multi-diameter flange (61), and the positioning rod (62) is located on the installation line of the positioning hole of the connecting pipe (5) and the exhaust test valve (7).

3. The test apparatus for the differential pressure test of a multi-diameter exhaust valve according to claim 2, characterized in that: The multi-bore flange (61) is divided into eight different sizes to meet the testing requirements of exhaust valves of different diameters.

4. The test apparatus for the differential pressure test of a multi-diameter exhaust valve according to claim 3, characterized in that: The slot (63) is L-shaped. There are four fixing blocks (64), and two are set on the outer wall of the connecting pipe (5) and the exhaust test valve (7). The three clamp rods (65) are grouped together. Each group of clamp rods (65) is fixedly installed at the bottom of the fixing block (64) in a semi-circular and equidistant manner. The clamp rods (65) have a certain toughness and are composed of rectangles and right triangles. The bend of the clamp rods (65) fits into the L-shaped bend of the slot (63).

5. The test apparatus for the differential pressure test of a multi-diameter exhaust valve according to claim 4, characterized in that: The pressing slider (66) is located on the moving trajectory of the right triangle of the lever (65).

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