Full-automatic hydrostatic pressure tester

Abstract

The utility model discloses a full-automatic hydrostatic pressure tester which comprises a pressure plate assembly, the pressure plate assembly comprises a pressing ring matched with an expansion breaking loading disc, the full-automatic hydrostatic pressure tester further comprises a mounting plate and a plurality of stand columns, the pressing ring is located under the mounting plate, and the stand columns are vertically arranged and fixedly connected with the pressing ring and the mounting plate. The bottom wall of the mounting plate is provided with a ball bowl with a downward opening, the spherical surface of the ball head abuts against the inner wall of the ball bowl, the ball bowl is provided with a through hole which extends upwards and allows the bolt column to penetrate through, and the diameter of the bolt column is smaller than that of the through hole. A downward pressing gap is reserved between the connector and the top wall of the installation plate, the bolt column penetrates through the through hole to be fixedly connected with the connector, then the ball head abuts against the ball bowl on the installation plate, and therefore rapid installation of the pressure plate assembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric performance testing, and particularly to a full-automatic hydrostatic pressure tester. Background Art

[0002] With the continuous progress of textile equipment and textile technology, the types of textiles are increasing, so the testing of textile fabric performance is becoming more and more important.

[0003] The hydrostatic pressure of a fabric refers to the value of the hydraulic pressure required for experimental water to start seeping out from the fabric surface. As a direct indicator of the waterproof performance of a waterproof fabric, it is an important test data for waterproof composite fabrics.

[0004] When the existing fabric hydrostatic pressure tester is in use, the fabric needs to be placed on a bursting carrier plate, and the fabric is pressed tightly at the bursting carrier plate by a pressing ring. Water is injected downward from the bursting carrier plate to the fabric, and the water pressure is tested. When water droplets seep out from the fabric, the value of the water pressure is recorded. Among them, after the pressing ring is pressed down, it needs to be accurately pressed and combined with the bursting carrier plate to prevent water leakage from the side of the fabric, thereby affecting the detection of the pressure.

[0005] Under normal circumstances, the pressing ring is directly fixed to the lifting rod by bolts. In order to achieve the accuracy of the cooperation between the pressing ring and the bursting carrier plate, the installation accuracy requirements for the pressing ring are relatively high at this time, which is not convenient for the quick installation of the pressing ring.

[0006] Therefore, how to design a hydrostatic pressure tester that can quickly install the pressing ring has become a technical problem to be solved urgently by those skilled in the art. Summary of the Utility Model

[0007] In order to solve at least one technical problem mentioned in the background art, the purpose of the utility model is to provide a full-automatic hydrostatic pressure tester to solve the problem that it is difficult to install the conventional pressing ring due to high installation accuracy requirements.

[0008] To achieve the above purpose, the utility model provides the following technical solutions:

[0009] A fully automatic hydrostatic pressure tester includes a base and a detector installed on the top of the base. A bursting load plate for placing a fabric is fixedly provided on the base. A cylinder is provided on the detector, and a pressure plate assembly is installed on the telescopic rod of the cylinder. The pressure plate assembly includes a pressing ring adapted to the bursting load plate, and also includes a mounting plate and a plurality of upright columns. The pressing ring is located directly below the mounting plate. The plurality of upright columns are vertically arranged and fixedly connected to the pressing ring and the mounting plate. The end of the cylinder telescopic rod is a connecting head, and a ball head is fixedly connected to the bottom wall of the connecting head through a bolt column. An opening facing downward is provided on the bottom wall of the mounting plate, and a ball bowl is provided. The spherical surface of the ball head abuts against the inner wall of the ball bowl. A through hole extending upward and allowing the bolt column to pass through is provided on the ball bowl. The diameter of the bolt column is smaller than the diameter of the through hole, and a downward pressing gap is left between the connecting head and the top wall of the mounting plate.

[0010] Further, the pressing ring is annular, and a second sealing ring is provided on the bottom wall of the pressing ring. Two sets of concentric first sealing rings are provided on the top wall of the bursting load plate. The second sealing ring and the two lower first sealing rings are arranged in an alternating manner.

[0011] Further, a second sealing groove is provided on the bottom wall of the pressing ring, and two sets of concentric first sealing grooves are provided on the top wall of the bursting load plate. The first sealing ring is installed in the first sealing groove, and the second sealing ring is installed in the second sealing groove. When the pressing ring abuts against the bursting load plate, the second sealing ring is located between the two first sealing rings and abuts against the first sealing rings at the same time.

[0012] Further, a second protective cover sleeved outside the upright column is provided between the mounting plate and the pressing ring. The bottom wall of the second protective cover abuts against the top wall of the pressing ring, and the top wall of the second protective cover abuts against the bottom wall of the mounting plate. The second protective cover is made of a transparent material.

[0013] Further, the second protective cover includes two housing shells longitudinally cut along the axis. Mounting seats are provided at both the bottom and the top of the housing shell. Mounting holes are provided in the mounting seats, and magnetic steels are installed in the mounting holes. When the housing shells are installed on the pressure plate assembly, the magnetic steels between the two housing shells attract each other.

[0014] Further, two sets of annularly distributed clamping grooves are provided on the circumferential walls of the mounting plate and the pressing ring. Clamping blocks adapted to the clamping grooves are fixedly provided on the mounting seats. A positioning hole is provided on the top wall of the clamping block, and a pin hole aligned with the positioning hole is provided on the mounting plate. An insertion pin is also included. When the clamping block is inserted into the clamping groove, the insertion pin passes through the pin hole and extends into the positioning hole.

[0015] Further, a drainage groove is provided on the base. The bursting load plate is fixedly installed in the drainage groove. A water inlet hole and a sensor mounting hole are provided on the bursting load plate, and a water pressure sensor is installed in the sensor mounting hole.

[0016] Further, the longitudinal section of the drain groove is V-shaped, a diversion groove is provided at the lowest position of the drain groove, the bottom wall of the diversion groove is inclined, and a drain hole extending downward is provided at the lowest position of the bottom wall of the diversion groove.

[0017] Further, a horizontally arranged insertion slot is provided on the side wall of the detector, and a first protective cover is further included. The cross-section of the first protective cover is U-shaped, and an insertion strip is provided on the inner wall of the top of the first protective cover. When the first protective cover is installed, the insertion strip is inserted into the insertion slot.

[0018] Further, the first protective cover is made of transparent plastic or glass.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model realizes the rapid installation of the pressure plate assembly by using the bolt column to pass through the through hole and fixedly connect with the connecting head, and then making the ball head abut against the ball bowl on the mounting plate.

[0020] During the operation process, under the action of its own gravity, the ball head of the pressure plate assembly abuts against the inner wall of the ball bowl, so that the pressure plate assembly remains horizontal. The pressing ring on the pressure plate assembly is matched with the bursting carrier plate. During the matching process, the relative movement between the ball bowl and the ball head on the pressure plate assembly can ensure the matching degree of the bursting carrier plate and the pressing ring. When the pressing ring and the bursting carrier plate are matched, the telescopic rod of the cylinder continues to push downward, so that the downward pressing gap between the connecting head and the top wall of the mounting plate disappears, and then a downward pressure can be applied to the pressure plate assembly to ensure the stability of the fabric clamping.

[0021] A window is left between adjacent two columns, and the water seepage condition of the fabric can be observed through this window, which is convenient for timely reading of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structure schematic diagram of the present utility model;

[0023] Figure 2 is the schematic diagram of the first protective cover in the disassembled state;

[0024] Figure 3 is the structure schematic diagram of the pressure plate assembly;

[0025] Figure 4 is the unfolded schematic diagram of the pressure plate assembly;

[0026] Figure 5 is the cross-sectional view of the pressure plate assembly;

[0027] Figure 6 is the structure schematic diagram of the housing;

[0028] Figure 7 is the structure schematic diagram of the mounting plate;

[0029] Figure 8 It is a schematic structural diagram of a bursting carrier plate;

[0030] Figure 9 It is a cross-sectional view of the base of the present utility model.

[0031] In the figure: 1. Base; 10. Drainage groove; 101. Diversion groove; 102. Drainage hole; 2. Detector; 21. Insertion slot; 3. First protective cover; 31. Insertion strip; 41. Bursting carrier plate; 401. Water inlet hole; 402. Sensor installation hole; 411. First sealing groove; 42. Pressing plate assembly; 421. Compression ring; 4211. Second sealing groove; 422. Mounting plate; 4221. Ball bowl; 4222. Clamping groove; 4223. Pin hole; 4224. Through hole; 423. Column; 431. First sealing ring; 432. Second sealing ring; 5. Second protective cover; 51. Housing; 52. Mounting seat; 521. Mounting hole; 53. Clamping block; 531. Positioning hole; 54. Magnet; 55. Pin; 6. Cylinder; 601. Lower pressing gap; 61. Connector; 611. Threaded hole; 7. Ball head; 71. Bolt column. Specific embodiments

[0032] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] This embodiment provides a fully automatic hydrostatic pressure tester, which is mainly used to reduce the installation requirements of the compression ring and realize the rapid installation of the compression ring.

[0034] As Figure 1 shown, it includes a base 1 and a detector 2 installed on the top of the base 1. Among them, a bursting carrier plate 41 is fixedly installed on the base 1, and a cylinder 6 is fixedly provided on the detector 2. Among them, the axis of the telescopic rod of the cylinder 6 coincides with the axis of the bursting carrier plate 41. A pressing plate assembly 42 is installed on the telescopic rod of the cylinder 6. The compression ring 421 on the pressing plate assembly 42 is pressed against the bursting carrier plate 41 by the extension of the telescopic rod of the cylinder 6, so as to fix the fabric to be detected.

[0035] As Figure 8 and Figure 9 shown, the bursting carrier plate 41 is provided with a water inlet hole 401 and a sensor installation hole 402. Among them, a water pressure sensor is installed in the sensor installation hole 402. As Figure 5As shown, when the fabric to be detected is pressed between the bursting carrier plate 41 and the pressing ring 421, a storage cavity for water supply is formed between the lower part of the fabric and the water inlet hole 401. As water is gradually injected into the storage cavity through the water inlet hole 401, the pressure in the storage cavity gradually increases. The water pressure sensor can detect the pressure inside the storage cavity, and by observing the amount of water droplets oozing out from the upper surface of the fabric to be tested, the performance of the fabric can be detected.

[0036] In order to improve the sealing performance of the storage cavity during detection, in this embodiment, as Figure 5 shown, two sets of concentric first sealing grooves 411 are provided on the upper wall of the bursting carrier plate 41. First sealing rings 431 are provided in both first sealing grooves 411. A second sealing groove 4211 is provided on the bottom wall of the pressing ring 421, and a second sealing ring 432 is installed in the second sealing groove 4211. When the pressing ring 421 is pressed against the bursting carrier plate 41, the second sealing ring 432 is located between the two lower first sealing rings 431.

[0037] Specifically, in this embodiment, the cross-sections of the first sealing ring 431 and the second sealing ring 432 are circular. After the bursting carrier plate 41 abuts against the pressing ring 421, the second sealing ring 432 abuts against the lower first sealing ring 431. At this time, the first sealing ring 431 and the second sealing ring 432 are deformed by extrusion, thereby improving the sealing performance of the storage cavity and reducing the risk of water leakage from the side of the fabric inside the storage cavity.

[0038] The pressing ring 421 is annular. In order to be able to install the pressing ring 421 on the cylinder 6, in this embodiment, as Figure 4 and Figure 7 shown, the pressing plate assembly 42 further includes a mounting plate 422 and a plurality of columns 423. Among them, the mounting plate 422 is located directly above the pressing ring 421, and the plurality of columns 423 are vertically arranged between the pressing ring 421 and the mounting plate 422. Specifically, the columns 423 are fixedly connected to the pressing ring 421 and the mounting plate 422 by bolts.

[0039] It should be noted here that since a window is left between the mounting plate 422 and the pressing ring 421 through the columns 423, during the test of the fabric, the situation of water droplets oozing out from the fabric can be observed through the window between the columns 423.

[0040] In order to connect the mounting plate 422 to the telescopic rod of the cylinder 6, in this embodiment, as Figure 5As shown, a connector 61 is provided at the end of the telescopic rod of the air cylinder 6. A threaded hole 611 is provided at the bottom of the connector 61 along the axial direction of the telescopic rod of the air cylinder 6. A spherical bowl 4221 is provided on the bottom wall of the mounting plate 422. A through hole 4224 communicating with the spherical bowl 4221 is provided on the top wall of the mounting plate 422. The through hole 4224 is arranged along the axial direction of the telescopic rod of the air cylinder. It further includes a ball head 7 and a bolt column 71 mounted on the ball head 7. The bolt column 71 passes through the through hole 4224 and is threadedly connected to the threaded hole 611. The spherical surface of the ball head 7 abuts against the inner wall of the spherical bowl 4221. After the mounting plate 422 is connected to the connector 61, as Figure 3 and Figure 5 shown, a downward pressing gap 601 is left between the connector 61 and the top wall of the mounting plate 422 so that the mounting plate 422 can swing on the ball head 71.

[0041] It should be noted here that the diameter of the bolt column 71 is smaller than the diameter of the through hole 4224, so that a gap for the mounting plate 422 to swing is left between the peripheral wall of the bolt column 71 and the inner wall of the through hole 4224. The diameter of the ball head 7 is larger than the diameter of the through hole 4224. By using the abutment of the spherical surface of the ball head 7 against the inner wall of the spherical bowl 4221, the entire pressure plate assembly 42 is restricted from falling downward.

[0042] Through the above settings, when the pressure plate assembly 42 is installed, the bolt column 71 is passed through the through hole 4224 from bottom to top, then the bolt column 71 is threadedly connected to the threaded hole 611, and the ball head 7 abuts against the spherical bowl 4221, thus completing the installation of the pressure plate assembly 42.

[0043] After the fabric is placed on the bursting load carrier 41, the telescopic rod of the air cylinder 6 extends downward. Under the action of its own gravity, the pressure plate assembly 42 moves downward horizontally. During this process, a downward pressing gap 601 is left between the mounting plate 422 and the connector 61. When the second sealing ring 432 is located between the two first sealing rings 431 at the lower side, the position of the pressure plate assembly 42 can be adjusted adaptively at this time, so as to ensure the cooperation between the pressing ring 421 and the bursting load carrier 41. After the pressing ring 421 is attached to the bursting load carrier 41, the telescopic rod of the air cylinder 6 continues to push downward, thus eliminating the gap between the connector 61 and the top wall of the mounting plate 422, and applying pressure to the mounting plate 422 by the connector 61, thereby strengthening the clamping of the fabric and improving the stability of the fabric installation.

[0044] Compared with the installation method of the traditional pressure plate assembly 42, the adaptability of this technical solution is higher, and the pressure plate assembly 42 has low requirements for assembly accuracy, which is convenient for the operators to install.

[0045] When the fabric is undergoing a hydrostatic pressure test, there is a risk of the fabric bursting. At this time, the water in the storage cavity will splash outwards, and the water is likely to come into contact with electrical components such as the control panel in the detector 2, which is likely to cause a short circuit in the circuit. Therefore, it is necessary to solve the problem of the water splashing out wantonly when the fabric bursts.

[0046] In this embodiment, as Figure 2 , Figure 3 and Figure 4 shown, it further includes a second protective cover 5 for blocking the window between two adjacent columns 423. Here, it is worth noting that the second protective cover 5 includes two symmetrically arranged housing shells 51. Among them, the housing shell 51 can be regarded as two parts split longitudinally along the axis of the cylindrical tube. At this time, the two housing shells 51 are arranged opposite to each other, which is convenient for disassembling or installing the second protective cover 5.

[0047] When the second protective cover 5 is installed, as Figure 5 shown, the top wall of the second protective cover 5 abuts against the bottom wall of the mounting plate 422, and the bottom wall of the second protective cover 5 abuts against the top wall of the pressing ring 421. As Figure 4 and Figure 6 shown, the inner walls of the bottom and top of the housing shell 51 are both provided with mounting seats 52 arranged radially inwards along the housing shell 51. Among them, the end walls of the mounting seats 52 at the positions where the two housing shells 51 are close to each other are provided with mounting holes 521. Among them, a magnetic steel 54 is fixedly installed in the mounting hole 521.

[0048] Through the above settings, when the housing shell 51 is installed, the housing shell 51 is moved along the radial direction of the pressure plate assembly 42 towards the side close to the column 423, and then the two housing shells 51 are pieced together to form the second protective cover 5, so that the magnetic steels 54 on the two housing shells 51 attract each other, and then the two housing shells 51 are held together on the column 423.

[0049] During the test of the fabric, even if there is a risk of the fabric bursting, at this time, the second protective cover 5 will block the water inside the pressure plate assembly 42 and prevent the water during the test from splashing outwards.

[0050] In order to further improve the stability of the installation of the housing shell 51, in this embodiment, as Figure 7 shown, the side walls of the mounting plate 422 and the pressing ring 421 are both provided with clamping grooves 4222. There are two clamping grooves 4222 on the mounting plate 422 and the pressing ring 421 and they are evenly distributed along the circumferential direction of the pressure plate assembly 42. As Figure 6 shown, the bottom and top of the housing shell 51 are both fixedly provided with clamping blocks 53 inserted into the clamping grooves 4222. Among them, the top wall of the clamping block 53 at the top of the housing shell 51 is provided with a positioning hole 531 with an upward opening, and the mounting plate 422 is provided with a pin hole 4223 adapted to the positioning hole 531. As Figure 4 andFigure 5 As shown, it further includes a bolt 55. When the clamping block 53 on the housing 51 is inserted into the clamping groove 4222, at this time, the bolt 55 passes through the bolt hole 4223 from top to bottom and extends into the positioning hole 531, thereby enhancing the stability of the housing 51.

[0051] It should be noted here that since it is necessary to observe the penetration of water droplets on the fabric through the window between the two columns 423, the housing 51 is made of transparent plastic or glass.

[0052] During the fabric test, when the fabric bursts, the system will control the telescopic rod of the cylinder 6 to retract, thereby driving the pressure plate assembly 42 to move upward. At this time, the water in the storage cavity will flow outwards. In order to accelerate the discharge of water, in this embodiment, as Figure 2 、 Figure 8 and Figure 9 shown, the base 1 is provided with a V-shaped drainage groove 10. Specifically, both sides of the drainage groove 10 are high and the middle is low, converging the water towards the middle of the drainage groove 10. The drainage groove 10 is also provided with a diversion groove 101. Among them, the bottom wall of the diversion groove 101 is inclined downward, and a drainage hole 102 extending downward is also provided at the lowest position of the diversion groove 101, thereby quickly discharging the water in the storage cavity through the drainage hole 102 to the outside.

[0053] In order to prevent the water from splashing wantonly outside the device after the fabric bursts, in this embodiment, as Figure 1 and Figure 2 shown, the side wall of the detector 2 is also provided with a horizontally arranged insertion groove 21. It further includes a first protective cover 3 with a U-shaped cross-section. Among them, a plug-in strip 31 is provided on the inner side of the top of the first protective cover 3. When the first protective cover 3 is installed, the plug-in strip 31 can be inserted into the insertion groove 21.

[0054] It should be noted here that after the first protective cover 3 is installed, it can enclose the cylinder 6, the pressure plate assembly 42, and the bursting carrier plate 41 to prevent the water from splashing outwards. Among them, the first protective cover 3 is made of glass, plastic, or transparent acrylic material, which is convenient for observing the water seepage situation on the upper surface of the fabric.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A fully automatic hydrostatic pressure tester, comprising a base (1) and a detector (2) mounted on the top of the base (1), wherein a bursting plate (41) for placing fabric is fixedly provided on the base (1), a cylinder (6) is provided on the detector (2), and a pressure plate assembly (42) is mounted on the telescopic rod of the cylinder (6), characterized in that: The pressure plate assembly (42) includes a clamping ring (421) adapted to the bursting plate (41), a mounting plate (422) and a plurality of columns (423), the clamping ring (421) being located directly below the mounting plate (422), the plurality of columns (423) being vertically arranged and fixedly connected to the clamping ring (421) and the mounting plate (422), the end connector (61) of the telescopic rod of the cylinder (6), the bottom wall of the connector (61) being connected by a bolt column ( The ball head (71) is fixedly connected to the mounting plate (422), the bottom wall of the mounting plate (422) is provided with a ball bowl (4221) with an opening facing downward, the spherical surface of the ball head (7) abuts against the inner wall of the ball bowl (4221), the ball bowl (4221) is provided with a through hole (4224) extending upward and for the bolt column (71) to pass through, the diameter of the bolt column (71) is smaller than the diameter of the through hole (4224), and a downward pressure gap (601) is left between the connecting head (61) and the top wall of the mounting plate (422).

2. A fully automatic hydrostatic pressure tester according to claim 1, characterized in that: The clamping ring (421) is annular, and a second sealing ring (432) is provided on the bottom wall of the clamping ring (421). The top wall of the bursting carrier (41) is provided with two groups of concentrically arranged first sealing rings (431), and the second sealing ring (432) and the two first sealing rings (431) on the lower side are arranged in an alternating manner.

3. A fully automatic hydrostatic pressure tester according to claim 2, characterized in that: The bottom wall of the clamping ring (421) is provided with a second sealing groove (4211), and the top wall of the bursting carrier (41) is provided with two sets of concentrically arranged first sealing grooves (411). The first sealing ring (431) is installed in the first sealing groove (411), and the second sealing ring (432) is installed in the second sealing groove (4211). When the clamping ring (421) is in contact with the bursting carrier (41), the second sealing ring (432) is located between the two first sealing rings (431) and is in contact with the first sealing ring (431) at the same time.

4. A fully automatic hydrostatic pressure tester according to claim 1, characterized in that: A second protective cover (5) is provided between the mounting plate (422) and the clamping ring (421) and is sleeved on the outside of the column (423); the bottom wall of the second protective cover (5) abuts against the top wall of the clamping ring (421); the top wall of the second protective cover (5) abuts against the bottom wall of the mounting plate (422); and the second protective cover (5) is made of a transparent material.

5. A fully automatic hydrostatic pressure tester according to claim 4, characterized in that: The second protective cover (5) comprises two cover shells (51) longitudinally sectioned along the axis, the bottom and top of the cover shells (51) are each provided with a mounting seat (52), the mounting seat (52) is provided with a mounting hole (521), and a magnet (54) is installed in each of the mounting holes (521). When the cover shells (51) are installed on the pressure plate assembly (42), the magnets (54) between the two cover shells (51) attract each other.

6. A fully automatic hydrostatic pressure tester according to claim 5, characterized in that: The peripheral walls of the mounting plate (422) and the clamping ring (421) are each provided with two groups of annularly distributed snap-in grooves (4222); a snap-in block (53) adapted to the snap-in groove (4222) is fixedly provided on the mounting seat (52); a positioning hole (531) is provided on the top wall of the snap-in block (53); a latch hole (4223) aligned with the positioning hole (531) is provided on the mounting plate (422); and the latch pin (55) is also provided; when the snap-in block (53) is inserted into the snap-in groove (4222), the latch pin (55) passes through the latch hole (4223) and extends into the positioning hole (531).

7. The fully automatic hydrostatic pressure tester according to claim 1, characterized in that: The base (1) is provided with a drainage groove (10), the bursting carrier plate (41) is fixedly installed in the drainage groove (10), the bursting carrier plate (41) is provided with a water inlet hole (401) and a sensor installation hole (402), and a water pressure sensor is installed in the sensor installation hole (402).

8. A fully automatic hydrostatic pressure tester according to claim 7, characterized in that: The longitudinal section of the drainage groove (10) is V-shaped, a guide groove (101) is provided at the lowest position of the drainage groove (10), the bottom wall of the guide groove (101) is arranged obliquely, and a downwardly extending drainage hole (102) is provided at the lowest position of the bottom wall of the guide groove (101).

9. The fully automatic hydrostatic pressure tester according to claim 1, characterized in that: The detector (2) is provided with a horizontally placed plug-in slot (21) on the side wall, and also includes a first protective cover (3), the cross section of the first protective cover (3) is U-shaped, and a plug-in strip (31) is provided on the top inner wall of the first protective cover (3), and when the first protective cover (3) is installed, the plug-in strip (31) is plugged into the plug-in slot (21).

10. A fully automatic hydrostatic pressure tester according to claim 9, characterized in that: The first protective cover (3) is made of transparent plastic or glass.

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