Adjustable clamping mechanism for flow standard measuring device

Abstract

The utility model relates to the technical field of flow standard measuring device tools, and discloses an adjustable clamping mechanism for a flow standard measuring device, which comprises a piston rod integration device, a cylinder barrel integration device, a distance adjusting integration device and a support integration device. One end of the piston rod integration device is connected with one end of the cylinder integration device. The cylinder barrel integration device is arranged on the top of the support integration device. And the distance adjusting integrated device is sleeved on the piston rod integrated device. One end face of the distance adjusting integration device is rotationally connected with one end of the cylinder barrel integration device. The distance adjusting integrated device comprises a distance adjusting nut, an adjusting wheel and a sliding bearing. The distance adjusting nut is in threaded connection with the piston rod integration device. And the adjusting wheel sleeves one end of the outer side surface of the distance adjusting nut. And the sliding bearing sleeves the other end of the outer side surface of the distance adjusting nut. The end, close to the piston rod integration device, of the cylinder barrel integration device abuts against one end face of the sliding bearing. The utility model solves the problem that the installation position adjusting device cannot be used when no power air source, no hydraulic station and no power supply exist on site.

Description

Technical Field

[0001] The utility model relates to the technical field of flow standard measuring device tooling, in particular to an adjustable clamping mechanism for a flow standard measuring device. Background Art

[0002] In the verification and calibration of flow meters by flow standard devices, the position of the flow meter to be tested and the length of the compensation pipeline are quickly located by the clamping / telescopic device, so as to meet the conditions for the flow meters of different lengths to form a closed pipeline in the flow standard device. At present, pneumatic and hydraulic clamping / telescopic devices are mostly used in flow standard devices, and there are also methods of fixing the instrument with metal soft flexible connection bolts. Pneumatic and hydraulic clamping / telescopic devices cannot be used in occasions where there is no power gas source, hydraulic station or power supply on site. The installation and disassembly operation of fixing the instrument with metal soft flexible connection bolts is inconvenient, the alignment accuracy is poor, and the efficiency is low.

[0003] In order to solve the above problems, we propose an adjustable clamping mechanism for a flow standard measuring device. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable clamping mechanism for a flow standard measuring device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable clamping mechanism for a flow standard measuring device, comprising a piston rod integrated device, a cylinder integrated device, a distance adjustment integrated device and a support integrated device; one end of the piston rod integrated device is connected to one end of the cylinder integrated device; the cylinder integrated device is arranged on the top of the support integrated device; the distance adjustment integrated device is sleeved on the piston rod integrated device; one end surface of the distance adjustment integrated device is rotatably connected to one end of the cylinder integrated device;

[0006] The pitch adjustment integrated device includes a pitch adjustment nut, an adjusting wheel and a sliding bearing; the pitch adjustment nut is threadedly connected to the piston rod integrated device; the adjusting wheel is sleeved on one end of the outer side surface of the pitch adjustment nut; the sliding bearing is sleeved on the other end of the outer side surface of the pitch adjustment nut; one end of the cylinder integrated device close to the piston rod integrated device is abutted against one end surface of the sliding bearing.

[0007] Preferably, a flat key is provided on the outer side surface of the pitch adjusting nut; a keyway is provided on the connecting surface between the adjusting wheel and the pitch adjusting nut; the flat key is arranged in the keyway of the adjusting wheel; and a first retaining ring is provided at the connection between the sliding bearing and one end face of the cylinder integrated device.

[0008] Preferably, the piston rod integrated device comprises a piston tube, a sealing disk, a loose flange, a disk body sealing ring, a lip-shaped skeleton sealing ring, a second retaining ring and a table support;

[0009] One end of the piston tube is connected to the sealing disk; a sealing ring groove is provided on the end face of the sealing disk away from the piston tube; the disk body sealing ring is provided in the sealing ring groove of the sealing disk; the outer side wall of the piston tube is threadedly connected to the adjusting nut; the loose flange is also sleeved on the end of the piston tube connected to the sealing disk; the end face of the loose flange close to the sealing disk is provided with the table support; the other end of the piston tube is sleeved with the lip-shaped skeleton sealing ring and the second retaining ring; a sealing ring groove is provided at the other end of the piston tube; the lip-shaped skeleton sealing ring is arranged in the sealing ring groove of the piston tube.

[0010] Preferably, the cylinder integrated device includes a cylinder liner, a straight pipe and a rear flange; one end of the straight pipe is connected to the cylinder liner; and the other end of the straight pipe is connected to the rear flange.

[0011] Preferably, a plurality of holes are provided in the cylinder sleeve; the plurality of holes are arranged in order from large to small in diameter from one end surface to the other end surface of the cylinder sleeve; and a sealing ring is provided in each hole.

[0012] Preferably, the support integrated device comprises a bottom plate, a first support plate, a second support plate, a rib plate, a lower pipe clamp and an upper pipe clamp;

[0013] The bottom plate is provided with the first support plate and the second support plate; a rib plate is provided between the first support plate and the second support plate; the first support plate is provided with the lower pipe clamp; the lower pipe clamp is detachably connected to the upper pipe clamp.

[0014] Preferably, a pipe clamp groove is provided on the outer surface of the cylinder sleeve; the lower pipe clamp and the upper pipe clamp are connected to the pipe clamp groove of the cylinder sleeve.

[0015] Preferably, a connecting flange cover is sleeved on the outer side wall of the adjusting nut; the sliding bearing and the first retaining ring are both arranged in the connecting flange cover; and the connecting flange cover is connected to one end of the cylinder integrated device by bolts.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the flow standard measuring device uses an adjustable tooling, which can solve the application occasions where there is no power gas source, no hydraulic station, and no power supply on site. The sealing ring groove is opened on the sealing disk to place the sealing ring, which can solve the problem of the sealing ring falling off. The torque-adjusting nut and the piston tube adopt a trapezoidal thread with a specific self-locking function to prevent the piston rod from retracting after extending, causing the flow standard device calibration pipeline to seep and leak. The sliding bearing is connected to the cylinder sleeve, so that the torque-adjusting nut can rotate freely and flexibly to ensure that the piston tube can achieve linear motion. The standard bearing can solve the problem of poor concentricity between the piston rod and the cylinder. The table support can realize the rapid positioning of the flow meter to be tested, and solve the problem of poor concentricity between the flow meter to be tested and the calibration pipeline. The upper pipe clamp and the lower pipe clamp clamp the cylinder assembly in the middle and fix it with bolts. The installation position of the device of the utility model can be slightly adjusted, which is flexible and convenient to avoid welding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the distance adjustment integrated device in the utility model;

[0019] Figure 3 This is a structural schematic diagram of the piston rod integrated device in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cylinder integrated device in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the support integration device in the utility model.

[0022] In the figure: 1-piston rod integrated device, 11-piston tube, 12-sealing disk, 13-loose flange, 14-disk body sealing ring, 15-lip skeleton sealing ring, 16-second retaining ring, 17-table support,

[0023] 2-cylinder integrated device, 21-cylinder sleeve, 22-straight pipe, 23-rear flange,

[0024] 3-adjustable integrated device, 31-adjustable nut, 32-adjusting wheel, 33-flat key, 34-sliding bearing,

[0025] 4-support integrated device, 41-bottom plate, 42-first support plate, 43-second support plate, 44-rib plate, 45-lower pipe clamp, 46-upper pipe clamp,

[0026] 5- Connect the flange cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The utility model provides a technical solution: an adjustable clamping mechanism for a flow standard measuring device, comprising a piston rod integrated device 1, a cylinder integrated device 2, a distance adjustment integrated device 3 and a support integrated device 4. One end of the piston rod integrated device 1 is connected to one end of the cylinder integrated device 2. The cylinder integrated device 2 is arranged on the top of the support integrated device 4. The distance adjustment integrated device 3 is sleeved on the piston rod integrated device 1. One end face of the distance adjustment integrated device 3 is rotatably connected to one end of the cylinder integrated device 2.

[0029] The pitch adjustment integrated device 3 includes a pitch adjustment nut 31, an adjusting wheel 32 and a sliding bearing 34. The pitch adjustment nut 31 is threadedly connected to the piston rod integrated device 1. The adjusting wheel 32 is sleeved on one end of the outer side of the pitch adjustment nut 31. The sliding bearing 34 is sleeved on the other end of the outer side of the pitch adjustment nut 31. One end of the cylinder integrated device 2 close to the piston rod integrated device 1 abuts against one end surface of the sliding bearing 34.

[0030] Furthermore, a flat key 33 is provided on the outer side of the pitch adjusting nut 31. A keyway is provided on the connection surface between the adjusting wheel 32 and the pitch adjusting nut 31. The flat key 33 is arranged in the keyway of the adjusting wheel 32. A first retaining ring 35 is provided at the connection between the sliding bearing 34 and one end surface of the cylinder integrated device 2.

[0031] Furthermore, the piston rod integrated device 1 includes a piston tube 11 , a sealing disk 12 , a loose flange 13 , a disk body sealing ring 14 , a lip-shaped skeleton sealing ring 15 , a second retaining ring 16 and a table support 17 .

[0032] One end of the piston tube 11 is connected to the sealing disk 12. The sealing disk 12 is provided with a sealing ring groove at one end away from the piston tube 11. The disk body sealing ring 14 is provided in the sealing ring groove of the sealing disk 12. The outer wall of the piston tube 11 is threadedly connected with the spacing nut 31. The end of the piston tube 11 connected to the sealing disk 12 is also provided with the loose flange 13. The end face of the loose flange 13 close to the sealing disk 12 is provided with the table support 17. The other end of the piston tube 11 is provided with the lip-shaped skeleton sealing ring 15 and the second retaining ring 16. The other end of the piston tube 11 is provided with a sealing ring groove. The lip-shaped skeleton sealing ring 15 is arranged in the sealing ring groove of the piston tube 11.

[0033] It should be noted here that, in the present invention, the piston tube 11 is a hollow tube structure, and performs piston movement in the cylinder integrated device 2 .

[0034] An inverted trapezoidal sealing ring groove is provided on one side plane of the sealing disk 12, and the disk body sealing ring 14 is placed in the inverted trapezoidal sealing ring groove of the sealing disk 12. Placing the disk body sealing ring 14 in the inverted trapezoidal sealing ring groove provided on the sealing disk 12 can solve the problem of the disk body sealing ring 14 falling off.

[0035] The other side of the sealing disc 12 is provided with a stopper groove to be fully welded to the piston tube 11. Full welding is also called "full welding", which means that all contacting places of the two workpieces to be welded together are fusion welded.

[0036] The piston tube 11 is provided with a trapezoidal thread, which is threadedly connected with the torque adjusting nut 31. The inner and outer threads are tightly attached to each other with conical surfaces and are not easy to loosen. Compared with rectangular threads, the transmission efficiency of trapezoidal threads is slightly lower, but the processability is good, the root strength is high, and the centering is good. If a split nut is used, the gap can also be adjusted. Trapezoidal threads are the most commonly used transmission threads.

[0037] The piston tube 11 is in clearance fit with the loose flange 13, and is dynamically sealed with the lip-shaped skeleton seal ring 15, and the second retaining ring 16 is placed in the groove at the end of the piston tube. The loose flange 13 is in clearance fit with the piston tube 11, ensuring that the loose flange 13 is in a vertical state when the piston tube 11 is extended and retracted, thereby solving the problem that the bolt hole of the fixed flange cannot be reset.

[0038] The table support 17 is connected to the loose flange 13 by bolts. This design can realize the rapid positioning of the flow meter to be tested, and solve the problem of poor concentricity between the flow meter to be tested and the calibration pipeline. In addition, the table support 17 can be flexibly disassembled, and the size and model of the table support 17 can be replaced for different flow meters, which has wider applicability.

[0039] Further, the cylinder integrated device 2 includes a cylinder sleeve 21, a straight pipe 22 and a rear flange 23. One end of the straight pipe 22 is connected to the cylinder sleeve 21. The other end of the straight pipe 22 is connected to the rear flange 23. The straight pipe 22 is fully welded to the cylinder sleeve 21 and the rear flange 23 respectively.

[0040] Furthermore, a plurality of holes are provided in the cylinder sleeve 21. The plurality of holes are arranged in order from large to small in diameter from one end face to the other end face of the cylinder sleeve 21. A sealing ring is provided in each hole.

[0041] Furthermore, the support integrated device 4 includes a bottom plate 41 , a first support plate 42 , a second support plate 43 , a rib plate 44 , a lower pipe clamp 45 and an upper pipe clamp 46 .

[0042] The bottom plate 41 is provided with the first support plate 42 and the second support plate 43. A rib plate 44 is provided between the first support plate 42 and the second support plate 43. The first support plate 42 is provided with the lower pipe clamp 45. The lower pipe clamp 45 is detachably connected to the upper pipe clamp 46.

[0043] The bottom plate 41 is spot-welded to the first support plate 42 and the second support plate 43, the rib plate 44 is spot-welded to the first support plate 42 and the second support plate 43, the lower pipe clamp 45 is fully welded to the front wall plate 42, and the cylinder sleeve 21 of the cylinder assembly 2 is clamped between the upper pipe clamp 46 and the lower pipe clamp 45 and fixed with standard bolts 47.

[0044] Furthermore, a pipe clamp groove is provided on the outer surface of the cylinder sleeve 21 , and the lower pipe clamp 45 and the upper pipe clamp 46 are connected to the pipe clamp groove of the cylinder sleeve 21 .

[0045] Furthermore, a connecting flange cover 5 is sleeved on the outer side wall of the adjusting nut 31. The sliding bearing 34 and the first retaining ring 35 are both arranged in the connecting flange cover 5. The connecting flange cover 5 is connected to one end of the cylinder integrated device 2 by bolts.

[0046] Working principle:

[0047] First, the cylinder integrated device 2 is placed on the support integrated device 4. The cylinder sleeve 21 is connected and fastened by the lower pipe clamp 45 and the upper pipe clamp 46. The flow meter to be tested is placed on the meter support 17. The loose flange 13 is connected to a water pipe near one end face of the flow meter to be tested, and the rear flange 23 is connected to another water pipe, thereby forming a passage. The adjusting wheel 32 is rotated, and the adjusting wheel 32 drives the pitch adjustment nut 31 to rotate through the flat key 33. The pitch adjustment nut 31 is connected to the cylinder sleeve 21 through the connecting flange cover 5. The sliding bearing 34 is provided in the connecting flange cover 5. Therefore, the pitch adjustment nut 31 drives the piston tube 11 to perform telescopic movement, thereby realizing a slight adjustment of the installation position of the utility model.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable clamping mechanism for a flow standard measuring device, characterized in that: The invention comprises a piston rod integrated device (1), a cylinder integrated device (2), a distance adjustment integrated device (3) and a support integrated device (4); one end of the piston rod integrated device (1) is connected to one end of the cylinder integrated device (2); the cylinder integrated device (2) is arranged on the top of the support integrated device (4); the distance adjustment integrated device (3) is sleeved on the piston rod integrated device (1); one end face of the distance adjustment integrated device (3) is rotatably connected to one end of the cylinder integrated device (2); The pitch adjustment integrated device (3) comprises a pitch adjustment nut (31), an adjusting wheel (32) and a sliding bearing (34); the pitch adjustment nut (31) is threadedly connected to the piston rod integrated device (1); the adjusting wheel (32) is sleeved on one end of the outer side surface of the pitch adjustment nut (31); the sliding bearing (34) is sleeved on the other end of the outer side surface of the pitch adjustment nut (31); and one end of the cylinder barrel integrated device (2) close to the piston rod integrated device (1) abuts against one end surface of the sliding bearing (34).

2. The adjustable clamping mechanism for a flow standard measuring device according to claim 1, characterized in that: The outer side surface of the pitch adjusting nut (31) is provided with a flat key (33); the connecting surface between the adjusting wheel (32) and the pitch adjusting nut (31) is provided with a keyway; the flat key (33) is arranged in the keyway of the adjusting wheel (32); and a first retaining ring (35) is provided at the connection between the sliding bearing (34) and one end surface of the cylinder integrated device (2).

3. The adjustable clamping mechanism for a flow standard measuring device according to claim 1, characterized in that: The piston rod integrated device (1) comprises a piston tube (11), a sealing disk (12), a loose flange (13), a disk body sealing ring (14), a lip-shaped skeleton sealing ring (15), a second retaining ring (16) and a table support (17); One end of the piston tube (11) is connected to the sealing disk (12); a sealing ring groove is provided on an end surface of the sealing disk (12) away from the piston tube (11); the disk body sealing ring (14) is provided in the sealing ring groove of the sealing disk (12); the outer wall of the piston tube (11) is threadedly connected to the spacing nut (31); the end of the piston tube (11) connected to the sealing disk (12) is also sleeved with the loose flange (13); the end surface of the loose flange (13) close to the sealing disk (12) is provided with the table support (17); the other end of the piston tube (11) is sleeved with the lip-shaped skeleton sealing ring (15) and the second retaining ring (16); the other end of the piston tube (11) is provided with a sealing ring groove; the lip-shaped skeleton sealing ring (15) is arranged in the sealing ring groove of the piston tube (11).

4. The adjustable clamping mechanism for a flow standard measuring device according to claim 1, characterized in that: The cylinder integrated device (2) comprises a cylinder sleeve (21), a straight pipe (22) and a rear flange (23); one end of the straight pipe (22) is connected to the cylinder sleeve (21); and the other end of the straight pipe (22) is connected to the rear flange (23).

5. The adjustable clamping mechanism for a flow standard measuring device according to claim 4, characterized in that: The cylinder sleeve (21) is provided with a plurality of hole grooves; the hole diameters of the plurality of hole grooves are arranged in order from large to small from one end surface to the other end surface of the cylinder sleeve (21); and a sealing ring is provided in each hole groove.

6. The adjustable clamping mechanism for a flow standard measuring device according to claim 4, characterized in that: The support integrated device (4) comprises a bottom plate (41), a first support plate (42), a second support plate (43), a rib plate (44), a lower pipe clamp (45) and an upper pipe clamp (46); The bottom plate (41) is provided with the first supporting plate (42) and the second supporting plate (43); a rib plate (44) is provided between the first supporting plate (42) and the second supporting plate (43); the first supporting plate (42) is provided with the lower pipe clamp (45); the lower pipe clamp (45) is detachably connected to the upper pipe clamp (46).

7. The adjustable clamping mechanism for a flow standard measuring device according to claim 6, characterized in that: The outer surface of the cylinder sleeve (21) is provided with a pipe clamp groove; the lower pipe clamp (45) and the upper pipe clamp (46) are connected to the pipe clamp groove of the cylinder sleeve (21).

8. The adjustable clamping mechanism for a flow standard measuring device according to claim 2, characterized in that: The outer wall of the adjusting nut (31) is sleeved with a connecting flange cover (5); the sliding bearing (34) and the first retaining ring (35) are both arranged in the connecting flange cover (5); and the connecting flange cover (5) is connected to one end of the cylinder integrated device (2) by bolts.

Images