Water-free sealing air pressure testing equipment

Abstract

The utility model discloses water-free sealing air pressure testing equipment, an upper cross beam is arranged above a lower base, the upper cross beam and the lower base are connected through a sliding rod, a sliding pressing plate is arranged on the sliding rod in a sliding mode, and a pressing cover matched with the upper surface of a product is arranged on the lower end face of the sliding pressing plate. An air inlet base matched with the lower surface of a product is arranged on the upper end face of the lower base; a second air cylinder is arranged on the lower end face of the sliding pressing plate. A pressing lever used for pressing the product and the gland is arranged on the second air cylinder. A second air cylinder is arranged on the upper end face of the lower base, and a pressing lever used for pressing the product and the air inlet base is arranged on the second air cylinder. According to the waterless sealing air pressure testing equipment, the sealing detection of the product is realized by arranging the hydraulic cylinder and the pressing lever at the two ends of the product respectively and independently pressing the end flanges at the two ends of the product, so that the whole extrusion of the traditional pressure device from top to bottom or from left to right is replaced, and the interference of external force on the testing result is avoided.

Description

Technical Field

[0001] The utility model relates to the field of air pressure testing equipment, in particular to waterless sealed air pressure testing equipment. Background Art

[0002] In the process of detecting whether a product has leaks, the most common detection method is to compress the product, fill it with appropriate air pressure, and then place it in water to maintain pressure to observe whether there are bubbles overflowing. If bubbles overflow on the parts, it is judged that the parts have a leak point. If no bubbles overflow, it means that the parts are not leaking. Although this test method is very effective, its shortcomings are difficult to avoid: 1. Apply external force to compress the product for testing, and the intervention of external force will affect the test results. 2. If the parts are iron products, they are prone to rust after being immersed in water to test the air pressure. 3. The parts are repeatedly tested in water, and the water is contaminated, which will affect the cleanliness of the product. Therefore, how to develop a waterless sealed air pressure test equipment has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0003] The utility model aims to provide a waterless sealing air pressure testing device to solve the problem that there are many shortcomings in testing the air tightness of products in water.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a waterless sealing air pressure test device, comprising a lower base, an upper crossbeam, a pressure cover and an air intake base, wherein the upper crossbeam is arranged above the lower base, the upper crossbeam and the lower base are connected by a sliding rod, a sliding pressure plate is slidably arranged on the sliding rod, a pressure cover matched with the upper surface of the product is arranged on the lower end surface of the sliding pressure plate, and an air intake base matched with the lower surface of the product is arranged on the upper end surface of the lower base; a second cylinder is arranged on the lower end surface of the sliding pressure plate, and a clamping lever for clamping the product and the pressure cover is arranged on the second cylinder; a second cylinder is arranged on the upper end surface of the lower base, and a clamping lever for clamping the product and the air intake base is arranged on the second cylinder.

[0006] Furthermore, a lifting ring is provided on the upper end surface of the sliding pressure plate, and the lifting ring is connected to the piston rod of the first cylinder on the upper cross beam through a chain.

[0007] Furthermore, a stud is provided at the lower end of the lifting ring, and the stud at the lower end of the lifting ring passes through the fixing hole on the sliding pressure plate and then cooperates with the threaded hole on the pressure cover.

[0008] Furthermore, an arc-shaped limiting protrusion is provided on the upper surface of the pressure cover, and a limiting groove cooperating with the limiting protrusion is provided on the lower surface of the sliding pressure plate.

[0009] Furthermore, the sliding pressure plate is provided with a sliding sleeve, and the sliding pressure plate is slidably matched with the sliding rod through the sliding sleeve.

[0010] Furthermore, the number of the second cylinders is four.

[0011] Furthermore, the lifting ring is detachably connected to the gland.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are:

[0013] The waterless seal test air pressure equipment of the utility model detects the seal of the product by respectively setting a hydraulic cylinder and a clamping lever at both ends of the product, and independently clamping the end flanges at both ends of the product, which replaces the traditional pressure device that squeezes the whole from top to bottom or from left to right, avoiding external forces from interfering with the test results. The waterless seal test air pressure equipment of the utility model realizes pressure seal testing without applying external forces that affect the valve seal, and realizes the judgment of whether there is a leak through the change of differential pressure under water-free conditions. In general, the waterless seal test air pressure equipment of the utility model has a simple structure, ingenious design, and practical functions, and effectively solves the problem of many shortcomings in the air tightness test of the product in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] Figure 1 This is a front view of the waterless seal air pressure test equipment of the utility model;

[0016] Figure 2 It is the front view of the gland;

[0017] Figure 3 It is the front view of the lifting ring;

[0018] Figure 4 It is the top view of the gland;

[0019] Figure 5 Bottom view of the sliding plate.

[0020] Explanation of the reference numerals in the accompanying drawings: 1. first cylinder; 2. chain; 3. sliding pressure plate; 301. fixing hole; 302. limiting groove; 4. clamping lever; 5. product; 6. air intake base; 7. sliding rod; 8. upper crossbeam; 9. pressure cover; 901. limiting protrusion; 902. threaded hole; 10. sliding sleeve; 11. second cylinder; 12. lower base; 13. lifting ring; 1301. stud. DETAILED DESCRIPTION

[0021] like Figures 1 to 5 As shown, a waterless sealing air pressure test device includes a lower base 12, an upper crossbeam 8, a pressure cover 9 and an air inlet base 6.

[0022] The upper cross beam 8 is disposed above the lower base 12 , and the upper cross beam 8 and the lower base 12 are connected via a sliding rod 7 . There are two sliding rods 7 , which are disposed at the left and right ends of the lower base 12 , respectively.

[0023] The sliding rod 7 is slidably provided with a sliding pressure plate 3 , and the sliding pressure plate 3 is provided with a sliding sleeve 10 . The sliding pressure plate 3 is slidably matched with the sliding rod 7 through the sliding sleeve 10 .

[0024] The upper end surface of the sliding pressure plate 3 is provided with a lifting ring 13 , and the lifting ring 13 is connected to the piston rod of the first cylinder 1 on the upper cross beam 8 through the chain 2 .

[0025] A pressure cover 9 that matches with the upper surface of the product 5 is arranged on the lower end surface of the sliding pressure plate 3 , and an air intake base 6 that matches with the lower surface of the product 5 is arranged on the upper end surface of the lower base 12 .

[0026] Two second cylinders 11 are arranged on the lower end surface of the sliding pressure plate 3 , and a pressing lever 4 for pressing the product 5 and the pressing cover 9 is arranged on the second cylinder 11 .

[0027] Two second cylinders 11 are arranged on the upper end surface of the lower base 12 , and a pressing lever 4 for pressing the product 5 and the air intake base 6 is arranged on the second cylinder 11 .

[0028] The lower end of the lifting ring 13 is provided with a stud 1301, and the stud 1301 at the lower end of the lifting ring 13 passes through the fixing hole 301 on the sliding pressure plate 3 and then matches with the threaded hole 902 on the pressure cover 9. The upper surface of the pressure cover 9 is provided with an arc-shaped limiting protrusion 901, and the lower surface of the sliding pressure plate 3 is provided with a limiting groove 302 that matches with the limiting protrusion 901.

[0029] The lifting ring 13 is detachably connected to the gland 9 , so that glands 9 of different sizes can be easily replaced to adapt to different types of products 5 .

[0030] The air cylinder in this article can be replaced by an oil cylinder according to the use environment.

[0031] The working principle of the utility model is as follows:

[0032] The utility model waterless seal air pressure test equipment is provided with two independent air storage chambers, one chamber is connected with the air path of product 5, and the other chamber is used as the pressure raw data chamber. First, after product 5 is placed in the work station, the second cylinder 11 is used to press the two ends of product 5 and fill it with a given air pressure. At this time, the pressures of the two air storage chambers are equal, and then the pressure is maintained. During the pressure maintenance process, if product 5 leaks, the pressure of the air storage chamber connected to product 5 will drop, and the differential pressure transmitter will read the pressure difference change of the two air storage chambers, and transmit this change to the display screen through a signal, and judge whether product 5 has a leak point by the differential pressure value.

[0033] The action process of the utility model is as follows:

[0034] After power is turned on, a signal is given to the first cylinder 1, the first cylinder 1 is pressed down, and the sliding pressure plate 3 drops. When the sliding pressure plate 3 contacts the product 5, the chain 2 no longer has the force to pull the sliding pressure plate 3; at this time, a signal is given to the four second cylinders 11, and the clamping lever 4 will lock the two ends of the product 5 respectively; after the air pressure of appropriate pressure is introduced, the gas will pass through the air storage cabin and then through the air intake base 6 into the interior of the product 5. When the air pressure is stable, the air intake button is closed, and the equipment will enter the waterless pressure test stage; the change in the pressure difference in the air storage cabin is used to determine whether the product has a leak. After the detection is completed and the end button is pressed, the second cylinder 11 releases the clamping lever 4, and the first cylinder 1 will pull up the sliding pressure plate 3 and return to the initial position, preparing for the pressure test of the next product 5.

[0035] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A waterless sealed air pressure test device, characterized in that: The invention comprises a lower base (12), an upper crossbeam (8), a pressure cover (9) and an air inlet base (6), wherein the upper crossbeam (8) is arranged above the lower base (12), the upper crossbeam (8) and the lower base (12) are connected by a sliding rod (7), a sliding pressure plate (3) is slidably arranged on the sliding rod (7), a pressure cover (9) which cooperates with the upper surface of the product (5) is arranged on the lower end surface of the sliding pressure plate (3), and the upper end surface of the lower base (12) is An air intake base (6) is arranged on the upper surface and cooperates with the lower surface of the product (5); a second cylinder (11) is arranged on the lower end surface of the sliding pressure plate (3), and a clamping lever (4) is arranged on the second cylinder (11) for clamping the product (5) and the pressure cover (9); a second cylinder (11) is arranged on the upper end surface of the lower base (12), and a clamping lever (4) is arranged on the second cylinder (11) for clamping the product (5) and the air intake base (6).

2. The waterless seal air pressure test equipment according to claim 1, characterized in that: The upper end surface of the sliding pressure plate (3) is provided with a lifting ring (13), and the lifting ring (13) is connected to the piston rod of the first cylinder (1) on the upper cross beam (8) through a chain (2).

3. The waterless seal air pressure test equipment according to claim 2, characterized in that: A stud (1301) is provided at the lower end of the lifting ring (13). The stud (1301) at the lower end of the lifting ring (13) passes through the fixing hole (301) on the sliding pressure plate (3) and then cooperates with the threaded hole (902) on the pressure cover (9).

4. The waterless seal air pressure test equipment according to claim 1, characterized in that: The upper surface of the pressure cover (9) is provided with an arc-shaped limiting protrusion (901), and the lower surface of the sliding pressure plate (3) is provided with a limiting groove (302) that cooperates with the limiting protrusion (901).

5. The waterless seal air pressure test equipment according to claim 1, characterized in that: The sliding pressure plate (3) is provided with a sliding sleeve (10), and the sliding pressure plate (3) is slidably matched with the sliding rod (7) via the sliding sleeve (10).

6. The waterless seal air pressure test equipment according to claim 1, characterized in that: The number of the second cylinders (11) is four.

7. The waterless seal air pressure test equipment according to claim 3, characterized in that: The lifting ring (13) is detachably connected to the pressure cover (9).

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