Water pump flange clamping test device

Abstract

The utility model relates to a water pump flange clamping test device. The device comprises a conical flange; the claw column is arranged on the conical flange, a barb part is arranged at the first end of the claw column, and the first end of the claw column extends into a bolt hole of the water pump flange and clamps the water pump flange through the barb part; the sealing pressure head is arranged on one side of the conical flange; and the screwing assembly is arranged on the other side of the conical flange, the screwing assembly penetrates through the conical flange and then is connected with the sealing pressing head, and the screwing assembly is used for driving the sealing pressing head to tightly press the end face of the water pump flange in a sealing mode. According to the clamping test device, the mode of fixing through each water pump flange mounting bolt can be omitted, the test pipeline mounting time can be greatly shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to hydrostatic test device technical field, especially to a water pump flange clamping test device. BACKGROUND

[0002] Please refer to Figure 1 As shown in the figure, the existing water pump 10 needs to install a sealing gasket 16 and a single piece sealing flange 12 at the water pump flange 11 of the inlet and outlet of each water pump 10 respectively when performing a hydrostatic sealing test, and then fixed with the water pump flange 11 by using a combination of parts such as a gasket 13, a bolt 14 and a nut 15 (the single piece sealing flange 12 needs to install 4-12 bolts), and a pipe joint 17 can be installed in the middle of the side of the sealing flange 12 away from the water pump flange 11, which is used to connect to the external water source to water the water pump 10. The bolt and nut of the sealing flange 12 need to be disassembled and assembled every time the hydrostatic sealing test is performed, which increases the working hours and reduces the production efficiency.

[0003] Therefore, it is necessary to design a water pump flange clamping test device to solve the above technical problems. CONTENT OF THE INVENTION

[0004] The present application provides a water pump flange clamping test device, which can save the way of installing bolts through each water pump flange, greatly shorten the installation time of the test pipeline, and improve the production efficiency.

[0005] To solve the above problems, the present application provides a water pump flange clamping test device, which comprises: a conical flange, a claw column is arranged on the conical flange, and a barb part is arranged at the first end of the claw column, the first end of the claw column extends into the water pump flange from the bolt hole and clamps the water pump flange through the barb part; a sealing pressure head is arranged on one side of the conical flange; a tightening assembly is arranged on the other side of the conical flange, the tightening assembly is connected to the sealing pressure head after penetrating the conical flange, and the tightening assembly is used to drive the sealing pressure head to seal and press the end face of the water pump flange.

[0006] Preferably, the conical flange comprises an upper cone and a lower connecting disc arranged at the bottom of the upper cone, and the edge of the lower connecting disc protrudes from the bottom edge of the upper cone; the claw column is arranged at the position where the lower connecting disc protrudes from the bottom edge of the upper cone, and is distributed in multiple equal intervals along the circumferential direction of the lower connecting disc.

[0007] Preferably, the second end of the claw column is fixedly connected to the lower connecting disc, or the second end of the claw column is detachably connected to the lower connecting disc, and an end of the second end of the claw column is integrally connected with a threaded column, and the two side walls opposite to the second end of the claw column are respectively recessed inward to form a stepped portion; a through hole is formed in the lower connecting disc for the threaded column to pass through, the threaded column can pass through the through hole and the stepped portion abuts against the lower surface of the lower connecting disc, the threaded column is fastened by a fastener, and the fastener abuts against the upper surface of the lower connecting disc.

[0008] Preferably, the sealing ram is arranged on the side of the lower connecting disc away from the upper cone, and the screwing assembly is arranged on the side of the upper cone away from the lower connecting disc; the screwing assembly is connected to the sealing ram after passing through the upper cone and the lower connecting disc in sequence.

[0009] Preferably, the sealing ram is provided with a first liquid flow channel extending inward from the sealing surface thereof, and a second liquid flow channel extending inward from the side surface of the sealing ram and communicating with the end of the first liquid flow channel; the side surface of the sealing ram is provided with a threaded counterbore in communication with the inlet end of the second liquid flow channel, and the threaded counterbore is used for threaded connection of a pipe joint; preferably, the sealing ram is provided in a disc shape, the first liquid flow channel extends in the axial direction of the sealing ram, and the second liquid flow channel extends in the radial direction of the sealing ram.

[0010] Preferably, the sealing surface of the sealing ram is provided with a sealing ring groove, the sealing ring groove and the sealing ram are arranged with the same center, and a sealing ring is arranged in the sealing ring groove.

[0011] Preferably, the screwing assembly comprises a lead screw, the lead screw passes through the lower connecting disc from the central position of the top surface of the upper cone and is connected to the sealing ram, and the lead screw is in threaded cooperation with the upper cone and in rotational cooperation with the lower connecting disc.

[0012] Preferably, the screwing assembly further comprises a screwing hand wheel, and the screwing hand wheel is arranged at the end of the lead screw away from the sealing ram.

[0013] Preferably, the upper cone is provided with a wear-resistant sleeve, the wear-resistant sleeve comprises a top disc and a threaded sleeve integrally connected to the lower surface of the top disc, the top disc is fixedly attached to the top surface of the upper cone, the upper cone is provided with a channel extending from the top surface to the interior, the threaded sleeve is arranged in the channel, and the lead screw is in threaded connection with the threaded sleeve after passing through the top disc.

[0014] Preferably, the top disc is detachably connected to the top surface of the upper cone; the upper cone is provided with a plurality of connecting bolts in the circumferential direction; the top disc and the upper cone are connected through the connecting bolts.

[0015] Advantages:

[0016] The application provides a water pump flange clamping test device. The claw column and the conical flange are connected and fixed into an integrated device, so that separate fixing is not needed each time, small parts are prevented from being lost, and installation time is saved. Meanwhile, the claw column serves as a bolt, the claw column first end is clamped with the water pump flange by means of the barb, and the water pump flange is not fastened by means of a nut. In use, the sealing pressure head is in contact with and sealed with the water pump flange by means of the tightening assembly. The device can greatly reduce working hours and improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of a traditional static pressure test device for performing a static pressure sealing test on a water pump;

[0018] Figure 2 FIG. 2 is a structural schematic diagram of a water pump flange clamping test device in the embodiment;

[0019] Figure 3 FIG. 3 is a sectional schematic diagram of the water pump flange clamping test device in the embodiment;

[0020] Figure 4 FIG. 4 is a structural schematic diagram of a claw column in the embodiment;

[0021] Figure 5 FIG. 5 is a structural schematic diagram of a lower connecting disc in the embodiment;

[0022] Figure 6 FIG. 6 is a structural schematic diagram of the water pump flange clamping test device in the embodiment for performing a static pressure sealing test on a water pump; Figure 1

[0023] Figure 7 FIG. 7 is a structural schematic diagram of the water pump flange clamping test device in the embodiment for performing a static pressure sealing test on a water pump; Figure 2

[0024] REFERENCE SIGNS:

[0025] ​​10, water pump; 11, water pump flange; 12, sealing flange; 13, gasket; 14, bolt; 15, nut; 16, sealing gasket; 17, pipe joint; 20, conical flange; 21, upper cone; 22, lower connecting disc; 23, accommodating groove; 30, claw column; 31, barb portion; 32, threaded column; 33, stepped portion; 40, sealing pressure head; 41, first liquid flow channel; 42, second liquid flow channel; 43, threaded counterbore; 44, positioning block; 50, tightening assembly; 51, lead screw; 52, tightening hand wheel; 60, fastener; 70, wear-resistant sleeve; 71, top disc; 72, threaded sleeve; 80, connecting bolt; 90, sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0027] It should be noted that the diagrams provided in the embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0028] The orientations or positional relationships indicated by the terms such as "upper", "lower", "left", "right", "intermediate", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like as used in this specification are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description, and thus cannot be understood as indicating or implying that a referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0029] The embodiments of the present application provide a water pump flange clamping test device. The device is compact in structure, small in space occupation, and can save the installation mode of the fixing bolt of each water pump flange, greatly shorten the installation working hours of the test pipeline, and improve the production efficiency.

[0030] The water pump flange clamping test device provided by the embodiments of the present application is described in detail below in combination with the drawings. Please refer to Figure 2 and Figure 3As shown, including the tapered flange 20, claw column 30, sealing head 40 and screw assembly 50, claw column 30 is arranged on the tapered flange 20, and the first end of the claw column 30 is provided with a barb 31, the first end of the claw column 30 extends into the bolt hole of the water pump flange 11 and is clamped to the side surface of the water pump flange 11 (such as Figure 6 As shown) by the barb 31; the sealing head 40 is arranged on one side of the tapered flange 20; the screw assembly 50 is arranged on the other side of the tapered flange 20, the screw assembly 50 is connected to the sealing head 40 after penetrating the tapered flange 20, and the screw assembly 50 is used to drive the sealing head 40 to seal and press the end surface of the water pump flange 11.

[0031] In this embodiment, the tapered flange 20, claw column 30, sealing head 40 and screw assembly 50 are integrated into a water pump flange clamping test device. When performing static pressure sealing test on the water pump 10, the first end of the claw column 30 is inserted into the bolt hole of the water pump flange 11 and clamped to the side surface of the water pump flange 11 through the barb 31, and then the sealing head 40 is driven by the screw assembly 50 to press the end surface of the water pump flange 11. In this scheme, the claw column 30 used to fix the water pump flange 11 corresponds to the bolt in the prior art, but does not need to be fastened by a nut, only the barb 31 of the claw column 30 clamps the water pump flange 11, and the sealing head 40 is fixed with the water pump flange 11 by the screw assembly 50, and the claw column 30 is fixed on the tapered flange 20, so that it is no longer necessary to be fixed separately each time it is used, which can prevent small parts from being lost, save installation time, and the device structure is compact, occupies small space for displaying products of various specifications, can greatly shorten the installation of test flange pipeline, reduce working hours, and improve production efficiency.

[0032] Please refer to Figure 2 and Figure 3 As shown, in this embodiment, it should be noted that the tapered flange 20 includes an upper taper 21 and a lower connecting disc 22, the lower connecting disc 22 is connected to the bottom of the upper taper 21 and arranged coaxially, and the edge of the lower connecting disc 22 protrudes the edge of the bottom of the upper taper 21. The claw column 30 is arranged in multiple, and the multiple claw columns 30 are distributed along the circumferential direction of the lower connecting disc 22 in sequence and at equal intervals, and the claw column 30 is arranged at the position where the lower connecting disc 22 protrudes the edge of the bottom of the upper taper 21.

[0033] Please refer to Figures 2-5It is to be noted that the number of claw columns 30 is consistent with the standard flange, and the number of claw columns 30 can be 4-12, according to the different caliber of the standard flange and the corresponding change of pressure bearing, and in the embodiment, only four claw columns 30 are set as an example for description, the claw columns 30 are arranged in a circumferential array on the lower connecting disc 22, and the second end of the claw column 30 is fixedly connected to or detachably connected to the lower connecting disc 22, and the first end of the claw column 30 needs to be kept in the same horizontal plane during installation. During the test, the barb part 31 of the claw column 30 is matched with the bolt hole of the water pump flange 11, without considering the outer cylindrical surface (size specification, etc.) of the water pump flange 11, and there is no requirement for the outer cylindrical surface of the water pump flange 11, which can be adapted to various flange products with the same center hole and different outer circles, and only one fixing operation is needed during installation, without other secondary fixing links. Preferably, the claw column 30 is made of special steel to ensure its strength.

[0034] In an implementable manner, a plurality of through holes 221 are formed in the lower connecting disc 22, the number of through holes 221 is consistent with the standard flange, the number of through holes 221 changes according to the different caliber of the standard flange, and the number of through holes 221 is consistent with the number of claw columns 30, and in the embodiment, only four through holes 221 are set as an example for description, the through holes 221 are arranged in a circumferential array on the lower connecting disc 22, the through holes 221 are arranged one by one corresponding to the claw columns 30, and the through holes 221 are set as waist-shaped holes. The end of the second end of the claw column 30 is integrally connected with a threaded column 32, the claw column 30 is recessed inwardly to form a stepped part 33 on the opposite two side walls close to the second end, the outer diameter of the threaded column 32 is smaller than the width of the through hole 221, so that the threaded column 32 can pass through the through hole 221 from bottom to top, and the threaded column 32 is screw-connected by using a fastener 60 such as a fastening nut, and the fastening nut abuts against the upper surface of the lower connecting disc 22, the width of the stepped part 33 recessed inwardly in the claw column 30 is greater than the width of the through hole 221, so that the stepped part 33 cannot pass through the through hole 221 and can abut against the lower surface of the lower connecting disc 22. Thus, the second end of the claw column 30 is fixed on the lower connecting disc 22 by the mutual cooperation of the fastener 60 and the stepped part 3, and the claw column 30 does not need to be adjusted every time after being fixed once. Preferably, the claw column 30 is a cylinder, and the stepped part 33 of the side wall of the claw column 30 can be processed into a flat shape on the opposite two side walls of the claw column 30, thereby forming the stepped part 33.

[0035] Please refer to Figures 2-5As shown, the sealing head 40 is arranged on the side of the lower connecting disc 22 away from the upper cone 21; the screwing assembly 50 is arranged on the side of the upper cone 21 away from the lower connecting disc 22, and the screwing assembly 50 is connected to the sealing head 40 after penetrating the upper cone 21 and the lower connecting disc 22 in sequence. The sealing head 40 is provided with the first liquid flow channel 41 extending inwardly at the center position of the sealing surface, i.e. the bottom surface of the lower connecting disc 22. The side surface of the sealing head 40 is provided with the second liquid flow channel 42 communicating with the end of the first liquid flow channel 41.

[0036] In some embodiments, the sealing head 40 is arranged in a disc shape. The side of the sealing head 40 close to the lower connecting disc 22 is the top surface, and the opposite side is the bottom surface, i.e. the sealing surface. The first liquid flow channel 41 is arranged inwardly at the center position of the sealing surface of the sealing head 40, i.e. along the axial direction of the sealing head 40. The end of the first liquid flow channel 41 does not penetrate the top surface of the sealing head 40. The second liquid flow channel 42 is arranged inwardly along the radial direction of the sealing head 40, and extends to the end of the first liquid flow channel 41. Thus, when the sealing head 40 contacts and seals the water pump flange 11, the water pump 10 can be filled with water through the first liquid flow channel 41 and the second liquid flow channel 42, thereby completing the static pressure sealing test of the water pump 10. Preferably, the side surface of the sealing head 40 is provided with a threaded counterbore 43, which communicates with the inlet end of the second liquid flow channel 42. The threaded counterbore 43 is used for threaded connection of a pipe joint. Therefore, the pipe joint is installed at the position of the threaded counterbore 43 by threaded connection, and then the pipe joint can be externally connected to a water source. Thus, the use of the pipe joint facilitates the connection of the external water source to the water pump 10 for water filling.

[0037] In some embodiments, the bottom surface of the sealing head 40 is further provided with a sealing ring groove, which is arranged with the same center as the bottom surface of the sealing head 40. A sealing ring 90 is arranged in the sealing ring groove. In the static pressure test of the water pump, water needs to be filled. Therefore, the sealing ring 90 can seal the gap between the sealing head 40 and the water pump flange 11.

[0038] Please refer to Figure 2 and Figure 3 As shown, in the present embodiment, it is also necessary to note that the screwing assembly 50 includes a lead screw 51 and a screwing hand wheel 52. The lead screw 51 is connected to the sealing head 40 after penetrating the lower connecting disc 22 from the center position of the top surface of the upper cone 21. The lead screw 51 is threadedly connected to the upper cone 21 and rotationally connected to the lower connecting disc 22. The lead screw 51 connects the conical flange 20 and the sealing head 40 together. By rotating the lead screw 51, the forward advancement of the sealing head 40 can be controlled until the sealing head 40 is tightly sealed with the water pump flange 11. The screwing hand wheel 52 is arranged at the end of the lead screw 51 away from the sealing head 40. The use of the screwing hand wheel 52 facilitates the rotation of the lead screw 51.

[0039] In an implementable mode, the upper cone 21 is provided with a wear-resistant sleeve 70, which includes a top disc 71 and a threaded sleeve 72. The top disc 71 is fixedly attached to the top surface of the upper cone 21 and coaxially arranged with the upper cone 21, and the top disc 71 and the top surface of the upper cone 21 are kept the same size. The middle position of the upper cone 21 is provided with a channel extending to the inside from the top surface, which is adapted to the threaded sleeve 72. The upper end of the threaded sleeve 72 is integrally connected to the lower surface of the top disc 71 and coaxially arranged with the top disc 71. The threaded sleeve 72 is nested in the channel of the upper cone 21 from top to bottom. The lead screw 51 is threadedly connected to the threaded sleeve 72 after passing through the top disc 71, thereby being connected to the sealing ram 40. The lead screw 51 is rotationally connected to the top disc 71. Thus, through the arrangement of the structure, the lead screw 51 is threadedly connected to the threaded sleeve 72 when rotating, and then can be pushed forward. In the process of pushing forward, the sealing ram 40 can be advanced until the sealing ram 40 is tightly attached to the water pump flange 11. The threaded connection of the wear-resistant sleeve 70 and the lead screw 51 can avoid the wear of the conical flange 20. When the wear-resistant sleeve 70 is damaged, the part can be directly replaced, without the need for overall replacement.

[0040] In an implementable mode, the top disc 71 is detachably connected to the upper surface of the upper cone 21. The detachable connection facilitates the replacement of the wear-resistant sleeve 70. The upper cone 21 and the top disc 71 are respectively provided with a plurality of threaded holes arranged in a circumferential array. The top disc 71 and the upper cone 21 are connected by connecting bolts 80 passing through the threaded holes of the top disc 71 and the upper cone 21, thereby fixing the two. When replacing the wear-resistant sleeve 70, the connecting bolts 80 are only needed to be disassembled, and then the wear-resistant sleeve 70 can be completely separated from the upper cone 21. Preferably, the wear-resistant sleeve 70 is made of copper material, which can prolong the service life of the wear-resistant sleeve 70.

[0041] Please refer to Figure 3 The lower surface of the lower connecting disc 22 is provided with a receiving groove 23 extending to the lower surface of the upper cone 21. The top of the receiving groove 23 is provided with a clearance hole for the lead screw 51 to pass out. The upper surface of the sealing ram 40 is provided with a positioning block 44 adapted to the receiving groove 23. The lead screw 51 is connected to the positioning block 44 after passing out of the receiving groove 23, and is preferably rotationally connected to the positioning block 44. Therefore, in the non-use state, the positioning block 44 of the sealing ram 40 is nested in the receiving groove 23. When in use, the sealing ram 40 is moved by the lead screw 51, and the positioning block 44 of the sealing ram 40 is moved out of the receiving groove 23.

[0042] The implementation principle of the embodiment is as follows: when the static pressure test is performed on the water pump 10, first, the barb part 31 of the claw column 30 is aligned with the bolt hole of the water pump flange 11, then the barb part 31 of the claw column 30 is inserted into the bolt hole and reaches the side surface of the water pump flange 11, then the side surface of the water pump flange 11 is clamped by the barb part 31, and preliminary fixation is completed; then the lead screw 51 is pushed forward by rotating the tightening hand wheel 52, and the sealing pressure head 40 is advanced in the process of pushing, until the sealing pressure head 40 contacts and quickly clamps the water pump flange 11, then the water source can be connected outside through the pipe joint on the side surface of the sealing pressure head 40, and then water is injected into the water pump 10 through the first liquid flow channel 41 and the second liquid flow channel 42 of the sealing pressure head 40 to perform the static pressure test. In the static pressure test process, different specifications of bolts, gaskets and nuts do not need to be found to clamp according to different specifications of the flange, and the sealing pressure head 40 can be quickly clamped with the water pump flange 11 only by the cooperation of the lead screw 51 and the claw column 30. The claw column 30 does not need to be fixed separately each time, which can prevent small parts from being lost and can save the installation of the bolts for each water pump flange 11, thereby greatly shortening the installation time of the test pipeline and improving the production efficiency.

[0043] As shown in Figure 1 , when a certain type of water pump 10 is subjected to static pressure test, gaskets 13, bolts 14, nuts 15 and sealing gaskets 16 and other components need to be used to fix between the water pump flange 11 and the sealing flange 12. There are many components, and the lengths and types of bolts corresponding to the single sealing flange 12 are not unified, more materials need to be managed, and more space is occupied. The bolts and nuts are easy to be damaged and lost after long-term use.

[0044] As shown in Figure 6 and Figure 7 , in the embodiment of the application, when the static pressure test is performed by using the water pump flange clamping test device, only the barb part 31 of the claw column 30 is used to clamp the side surface of the water pump flange 11 through the bolt hole of the water pump flange 11, and then the sealing pressure head 40 is quickly and sealingly clamped at the position of the water pump flange 11 by means of the lead screw 51.

[0045] Compared with the traditional static pressure test, the water pump flange clamping test device of the application uses fewer components, and the components are connected as a whole, avoiding the risk that small components are lost, and different specifications of bolts, gaskets and nuts do not need to be found to clamp according to different specifications of the flange. The water pump flange clamping test device is widely used and can be used in water pump and related industry product manufacturers and can be applied to customer sites.

[0046] Any combination of the technical features in the above embodiments can be made, and for the sake of brevity, not all possible combinations are described above, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0047] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A water pump flange clamping test device characterized by, It comprises: a conical flange (20); a claw column (30) arranged on the conical flange (20), and the first end of the claw column (30) is provided with a barb (31), the first end of the claw column (30) extends into the bolt hole of the water pump flange (11) and clamps the water pump flange (11) through the barb (31); a sealing ram (40) arranged on one side of the conical flange (20); a screwing assembly (50) arranged on the other side of the conical flange (20), the screwing assembly (50) is connected to the sealing ram (40) after penetrating the conical flange (20), and the screwing assembly (50) is used to drive the sealing ram (40) to seal and press the end face of the water pump flange (11).

2. The clamping test device according to claim 1, wherein: the conical flange (20) comprises an upper cone (21) and a lower connecting disc (22) arranged at the bottom of the upper cone (21), and the edge of the lower connecting disc (22) protrudes the bottom edge of the upper cone (21); the claw column (30) is arranged at the position where the lower connecting disc (22) protrudes the bottom edge of the upper cone (21), and is sequentially and equally spaced along the circumferential direction of the lower connecting disc (22).

3. The clamping test device according to claim 2, wherein: the second end of the claw column (30) is fixedly connected to the lower connecting disc (22); or, the second end of the claw column (30) is detachably connected to the lower connecting disc (22), the end of the second end of the claw column (30) is integrally connected with a threaded column (32), and the two side walls opposite to the second end of the claw column (30) are respectively recessed inward to form a stepped portion (33); the lower connecting disc (22) is provided with a through hole (221) for penetrating the threaded column (32), the threaded column (32) can penetrate the through hole (221) and the stepped portion (33) abuts against the lower surface of the lower connecting disc (22), the threaded column (32) is fastened by a fastener (60), and the fastener (60) abuts against the upper surface of the lower connecting disc (22).

4. The clamping test device according to claim 2 or 3, wherein: the sealing ram (40) is arranged on the side of the lower connecting disc (22) away from the upper cone (21), and the screwing assembly (50) is arranged on the side of the upper cone (21) away from the lower connecting disc (22); the screwing assembly (50) is connected to the sealing ram (40) after sequentially penetrating the upper cone (21) and the lower connecting disc (22).

5. The clamping test device according to claim 1, wherein: the sealing ram (40) is provided with a first liquid flow channel (41) extending inwardly at the sealing surface thereof; the side surface of the sealing ram (40) is provided with a second liquid flow channel (42) extending inwardly and communicating with the end of the first liquid flow channel (41). The side of the sealing ram (40) is provided with a threaded counterbore (43) which is in communication with the inlet end of the second liquid flow channel (42), and the threaded counterbore (43) is used for threaded connection of a pipe joint; The sealing ram (40) is provided in a disc shape, the first liquid flow channel (41) extends in the axial direction of the sealing ram (40), and the second liquid flow channel (42) extends in the radial direction of the sealing ram (40).

6. The clamping test device according to claim 1 or 5, characterized in that The sealing surface of the sealing ram (40) is provided with a sealing ring groove; The sealing ring groove and the sealing ram (40) are provided with the same center; The sealing ring groove is provided with a sealing ring (90).

7. The clamping test device according to claim 2, characterized in that The screwing assembly (50) comprises a lead screw (51) which is connected to the sealing ram (40) after penetrating the lower connecting disc (22) from the center position of the top surface of the upper cone (21); The lead screw (51) is threadedly connected with the upper cone (21) and rotationally connected with the lower connecting disc (22).

8. The clamping test device according to claim 7, characterized in that The screwing assembly (50) further comprises a screwing hand wheel (52) which is arranged at the end of the lead screw (51) away from the sealing ram (40).

9. The clamping test device according to claim 7 or 8, characterized in that The upper cone (21) is provided with a wear-resistant sleeve (70); The wear-resistant sleeve (70) comprises a top disc (71) and a threaded sleeve (72) integrally connected to the lower surface of the top disc (71); The top disc (71) is fixedly attached to the top surface of the upper cone (21); The upper cone (21) is provided with a channel extending from the top surface to the inside, the threaded sleeve (72) is arranged in the channel, and the lead screw (51) penetrates the top disc (71) and is threadedly connected in the threaded sleeve (72).

10. The clamping test device according to claim 9, characterized in that The top disc (71) is detachably connected to the top surface of the upper cone (21); The upper cone (21) is provided with a plurality of connecting bolts (80) in the circumferential direction; The top disc (71) and the upper cone (21) are connected through the connecting bolts (80).

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