Meter clamping device and flowmeter calibrating device

Abstract

The embodiment of the utility model provides a meter clamping device and a flowmeter calibrating device, and relates to the technical field of inspection instruments. The meter clamping device comprises a fixing table, a first support, a second support, a first guide pipe and a second guide pipe. The first support comprises a hoop assembly used for clamping a first guide pipe, and the second support is used for clamping a second guide pipe. The hoop assembly comprises a first hoop support and a hoop. One end of each hoop is rotationally connected with the corresponding first hoop bracket, and the other end of each hoop is detachably connected with the corresponding first hoop bracket; the first hoop support and the hoop clamp the first guide pipe through a variable-diameter clamping block arranged in the first hoop support and the hoop, and the size of the variable-diameter clamping block is matched with the pipe diameter of the first guide pipe. The diameter-variable clamping block is matched with the pipe diameter of the first guide pipe so as to adapt to the detected meters with different calibers, and the problem that in the prior art, clamping of the detected meters with different calibers cannot be compatible is solved.

Description

Technical Field

[0001] This application belongs to the technical field of inspection instruments, and particularly relates to a meter clamp and a flowmeter calibration device. Background Art

[0002] During the use of flowmeters, calibration is often required. The calibration methods for gas flowmeters mainly include the sonic nozzle method, the servo-type standard flowmeter comparison method, and the bellows method. A meter clamp is a device applied in a flow standard device, and the flow standard device is mainly used for the calibration work of flowmeters.

[0003] A meter clamp is one of the main supporting products of a flow calibration device, and is used to clamp the meter under test during the instrument calibration process. Since the lengths of the flowmeters produced by each manufacturer are different, the length of the installation position of the flowmeter can be adjusted through the meter clamp, and the meter clamp is used during installation to adjust to a suitable installation position.

[0004] Since the calibration conduits provided on the existing meter clamps are often of a single and non-replaceable conduit specification, different types of meters under test require different specifications of meter clamps to achieve the calibration work. That is, the specifications and dimensions of the meter clamp will vary depending on the meter under test. Therefore, various flanges and standard interchangeable interface flanges need to be equipped, which will cause problems in the compatibility of the meter clamp with other devices and the problem of being unable to clamp meters under test with different calibers, increasing the complexity of the flow calibration work. Utility Model Content

[0005] The embodiments of this application provide a meter clamp and a flowmeter calibration device to solve the problem that the structure of the existing meter clamp cannot be compatible with the clamping of meters under test with different calibers.

[0006] To achieve the above purpose, the embodiments of this application provide the following technical solutions:

[0007] In a first aspect, the embodiments of this application provide a meter clamp, which includes: a fixed table (1), a first bracket (2), a second bracket (3), a first conduit (4), and a second conduit (5);

[0008] One end of the fixed table (1) is fixedly connected to the first bracket (2), and the other end is fixedly connected to the second bracket (3);

[0009] The first bracket (2) includes: a clamp assembly (22), and the clamp assembly (22) is used to clamp the first conduit (4), and the second bracket (3) is used to clamp the second conduit (5);

[0010] The clamp assembly (22) includes: a first clamp bracket (221) and a clamp (222);

[0011] One end of the hoop (222) is rotatably connected to the corresponding first hoop bracket (221), and the other end is detachably connected to the first hoop bracket (221);

[0012] Both the first hoop bracket (221) and the hoop (222) clamp the first conduit (4) through a reducing clamp block (223) disposed inside, wherein the size of the reducing clamp block (223) matches the pipe diameter of the first conduit (4);

[0013] Optionally, the reducing clamp block (223) includes: a first clamp block (2231) and a second clamp block (2232), both the first clamp block (2231) and the second clamp block (2232) are arc-shaped structures, and positioning grooves are disposed on the outer sides, and limiting steps (224) are provided on the first hoop bracket (221) and the hoop (222);

[0014] The first hoop bracket (221) is snap-connected to the positioning groove of the first clamp block (2231) through the corresponding limiting step (224), and the hoop (222) is sleeved in the positioning groove of the second clamp block (2232) through the corresponding limiting step (224);

[0015] Optionally, there is a gap (225) between the first hoop bracket (221) and the hoop (222);

[0016] The first clamp block (2231) and the second clamp block (2232) have the same size, and a through hole for the first conduit (4) to penetrate is formed between the first clamp block (2231) and the second clamp block (2232), and the aperture of the first through hole matches the pipe diameter of the first conduit (4), so that the first clamp block (2231) and the second clamp block (2232) are in interference fit with the first conduit (4).

[0017] Optionally, the first bracket (2) further includes: a sliding assembly (21);

[0018] The top of the sliding assembly (21) is connected to the hoop assembly (22), and under the action of an external force, the first conduit (4) clamped by the hoop assembly (22) slides through the sliding assembly (21);

[0019] Optionally, the number of the hoop assemblies (22) is two, and the sliding assembly (21) includes: two slide rails (211) and two groups of sliders (212);

[0020] Both of the two slide rails (211) are fixedly connected to the fixed platform (1);

[0021] The two sets of sliding blocks (212) are respectively arranged on the corresponding sliding rails (211) and fixedly connected to the two first hoop brackets (221);

[0022] The two first hoop brackets (221) slide along the extension direction of the corresponding sliding rails (211) under the action of an external force;

[0023] Optionally, the meter clamp further includes: a power assembly (6);

[0024] The power assembly (6) includes: two cylinders (61), a bottom plate (62) and a side plate (63), and the cylinder (61) includes: a power member (611) and two output ends (612);

[0025] The bottom plate (62) is fixedly connected to the fixed platform (1), the side plate (63) is fixedly connected to the bottom plate (62), and one side of the side plate (63) is fixedly connected to one end of the power member (611) of the cylinder (61);

[0026] One of the two output ends (612) is fixedly connected to the first hoop bracket (221), and the other output end (612) penetrates through the side plate (63) and is fixedly connected to the other first hoop bracket (221);

[0027] Optionally, the second bracket (3) includes: two second hoop brackets (31) and two hoops (222);

[0028] The two hoops (222) are respectively fixedly connected to the two second hoop brackets (31);

[0029] A second through hole for the second conduit (5) to penetrate is formed between the hoop (222) and the second hoop bracket (31), the second conduit (5) penetrates through the second through hole and is fixedly connected to the second bracket (3), and the aperture of the second through hole matches the pipe diameter of the second conduit (5);

[0030] Optionally, a third bracket (7) is arranged on the upper surface of the fixed platform (1);

[0031] The third bracket (7) is arranged between the first bracket (2) and the second bracket (3); the third bracket (7) includes: two support assemblies (71), the two support assemblies (71) are connected to the upper surface of the fixed platform (1), and the support assemblies (71) are used to support the meter under test;

[0032] Optionally, a first flange (42) is arranged at the first pipe orifice (41) of the first conduit (4), and the first flange (42) is used to abut against the inlet end of the meter under test;

[0033] The second pipe orifice (51) of the second conduit (5) is provided with a second flange (52), and the second flange (52) is used for abutting against the outlet end of the meter under test.

[0034] In a second aspect, an embodiment of the present application provides a flowmeter verification device, and the flowmeter verification device includes the meter clamp described in the first aspect and various possible implementation manners of the first aspect.

[0035] An embodiment of the present application provides a meter clamp and a flowmeter verification device. The meter clamp includes a fixed platform, a first bracket, a second bracket, a first conduit, and a second conduit; one end of the fixed platform is fixedly connected to the first bracket, and the other end is fixedly connected to the second bracket; the first bracket includes: a hoop assembly for clamping the first conduit, and the second bracket is used for clamping the second conduit; the hoop assembly includes: a first hoop bracket and a hoop; one end of the hoop is rotatably connected to the corresponding first hoop bracket, and the other end is detachably connected to the first hoop bracket; both the first hoop bracket and the hoop clamp the first conduit through a variable-diameter clamping block arranged inside, wherein the size of the variable-diameter clamping block matches the pipe diameter of the first conduit. Through the matching of the variable-diameter clamping block and the first conduit, it is applicable to the meters under test with different calibers, and solves the problem that the meters under test with different calibers cannot be clamped compatibly in the prior art. Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. The drawings here are incorporated into the specification and form a part of the specification, showing the embodiments conforming to the present application, and are used together with the specification to explain the principle of the present application.

[0037] Figure 1 It is a schematic structural diagram of a meter clamp and a flowmeter verification device provided by an embodiment of the present application;

[0038] Figure 2 For Figure 1 the structural schematic diagram of the first bracket 2 in

[0039] Figure 3 For Figure 1 and Figure 2 the structural schematic diagram of the hoop assembly 22 in

[0040] Figure 4 For Figure 3 the structural schematic diagram of the variable-diameter clamping block 223 in

[0041] Figure 5 is Figure 1 a side view of the first bracket 2 in

[0042] Figure 6 is Figure 1 a schematic structural diagram of the second bracket 3 in

[0043] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0044] Description of reference numerals:

[0045] 1: fixed platform;

[0046] 2: first bracket;

[0047] 21: sliding assembly; 211: slide rail; 212: slider; 22: hoop assembly; 221: first hoop bracket; 222: hoop; 223: variable-diameter clamping block; 2231: first clamping block; 2232: second clamping block; 224: limiting step; 225: gap;

[0048] 3: second bracket;

[0049] 31: second hoop bracket;

[0050] 4: first conduit; 41: first pipe orifice; 42: first flange;

[0051] 5: second conduit; 51: second pipe orifice; 52: second flange;

[0052] 6: power assembly;

[0053] 61: cylinder; 611: power component; 612: output end; 62: bottom plate; 63: side plate;

[0054] 7: third bracket;

[0055] 71: support assembly. Detailed implementation manners

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the following will clearly and completely describe the technical solutions in this application and how these technical solutions solve the above-mentioned technical problems with specific embodiments in combination with the accompanying drawings in this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0057] In the description and claims of this application and the above-mentioned accompanying drawings, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order different from those illustrated or described herein.

[0058] In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0059] Since the lengths of the flow meters produced by each manufacturer are different, the clip-on meter is used to adjust the length of the installation position of the flow meter. Currently, the structure of the pneumatic clip-on meter is often a sleeve structure, and there are steps inside the conduit, which will interfere with the flow state of the medium, resulting in unstable flowing medium, easy occurrence of air flow vortices, and large deviations in the inspection effect.

[0060] Therefore, the embodiments of this application provide a clip-on meter and a flow meter verification device, including a fixed table, a first bracket, a second bracket, a first conduit, and a second conduit; wherein the first bracket includes: a hoop assembly, and the hoop assembly is provided with a first hoop bracket and a hoop; one end of the hoop is rotatably connected to the corresponding first hoop bracket, and the other end is movably connected to the first hoop bracket; both the first hoop bracket and the hoop clamp the first conduit through a reduced-diameter clamping block provided inside. By matching the size of the reduced-diameter clamping block with the pipe diameter of the first conduit, replacing the first conduit with a corresponding pipe diameter according to different meters to be inspected, and clamping it with different reduced-diameter clamping blocks, it is possible to adapt to meters to be inspected with different calibers and increase the practicability of the clip-on meter.

[0061] The technical solution of the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0062] Figure 1 It is a structural schematic diagram of a clamp meter and a flowmeter calibration device provided by an embodiment of the present application. Figure 2 It is a structural schematic diagram of the first bracket 2 in a clamp meter provided by this embodiment. As Figure 1 and Figure 2 shown, an embodiment of the present application provides a clamp meter, including: a fixed table 1, a first bracket 2, a second bracket 3, a first conduit 4, and a second conduit 5; one end of the fixed table 1 is fixedly connected to the first bracket 2, and the other end is fixedly connected to the second bracket 3; the first bracket 2 includes: a hoop assembly 22, and the hoop assembly 22 is used to clamp the first conduit 4, and the second bracket 3 is used to clamp the second conduit 5; the hoop assembly 22 includes: a first hoop bracket 221 and a hoop 222; one end of the hoop 222 is rotatably connected to the corresponding first hoop bracket 221, and the other end is detachably connected to the first hoop bracket 221; both the first hoop bracket 221 and the hoop 222 clamp the first conduit 4 through a variable-diameter clamping block 223 provided inside, wherein the size of the variable-diameter clamping block 223 matches the pipe diameter of the first conduit 4.

[0063] Among them, the clamp meter is mainly composed of a fixed table 1, a first bracket 2, a second bracket 3, a first conduit 4, and a second conduit 5. The fixed table 1 serves as a support base, one end of which is firmly connected to the first bracket 2, and the other end is connected to the second bracket 3, forming a stable support framework. In the embodiment of the present application, the first bracket 2 is a moving bracket for the front straight pipe section of the clamp meter, the first conduit 4 and the second conduit 5 are straight through pipes, and the fixed table 1 is fixedly connected to the first bracket 2 and the second bracket 3 to ensure the stability and accuracy of the entire calibration process. The second bracket 3 is used to clamp the second conduit 5 and is fixedly connected to the fixed table 1. The second conduit 5 serves as a fixed connection pipe between the meter under test and the output end during the calibration process, and together with the first conduit 4, forms a flow calibration loop to improve the calibration accuracy.

[0064] It can be understood that the first bracket 2 includes a hoop assembly 22 for clamping the first conduit 4. The hoop assembly 22 is used to firmly clamp and fix the first conduit 4 to ensure that the first conduit 4 will not move or shake due to external forces during the calibration process, thereby affecting the accuracy of the calibration result. Among them, the hoop assembly 22 can fix different-sized clamping blocks to be compatible with conduits and meters under test of different calibers.

[0065] The clamp assembly 22 is composed of a first clamp bracket 221 and a clamp 222. One end of the clamp 222 is flexibly connected to the corresponding first clamp bracket 221 to achieve flexibility, and the other end is detachably connected, for example, it can be detachably bolted through a locking bolt and other movable bolts to achieve the fastening function. By rotating the locking bolt, the corresponding clamping force can be generated to make the clamp closely fit on the conduit, preventing it from loosening or falling off during the verification process. And the opening degree of the clamp 222 can be adjusted according to the diameter of the first conduit 4, and the clamp 222 can be opened when needed to replace the first conduit 4 with different pipe diameters to be applicable to different models of meters under test.

[0066] It should be noted that a variable-diameter clamping block 223 is arranged inside the clamp assembly 22. The size of the variable-diameter clamping block 223 matches the pipe diameter of the first conduit 4. Different variable-diameter clamping blocks 223 can be replaced to ensure matching of the first conduit 4 with different pipe diameters, so that the first conduit 4 can be tightly and evenly clamped, and the verification problems caused by uneven clamping can be avoided.

[0067] Specifically, the variable-diameter clamping block 223 is arranged inside the clamp 222 and can adapt to conduits with different diameters. The variable-diameter clamping block 223 can adopt an adjustable design, such as screw adjustment, wedge adjustment or replacement of different models of clamping blocks, etc., so that its inner diameter can be adjusted when clamping conduits with different diameters, thereby ensuring that the conduit is evenly clamped and kept in a horizontal state, improving the versatility and flexibility of the clamp assembly, enabling it to be applicable to conduits of various specifications, and making the device compatible with different models of flow meters.

[0068] During the use process, through the stable clamping and flexible adjustment of the first conduit 4 by the clamp assembly 22, with the assistance of the variable-diameter clamping block 223, the clamp 222 can closely fit on the conduit, and the position of the first conduit 4 is fixed through movable bolts such as locking bolts, ensuring the stability and horizontal state of the conduit during the verification process, and improving the adaptability and operation convenience of the verification device. The first conduit 4 and the second conduit 5 are respectively connected to both ends of the flow meter under test to form a medium flow channel. During the verification process, by controlling parameters such as the flow rate and pressure of the fluid in the two conduits, the actual working conditions can be simulated to verify and calibrate the measurement accuracy of the flow meter.

[0069] Figure 3 It is a schematic structural diagram of the clamp assembly 22 in a meter clamp provided in this embodiment. Figure 4 It is a schematic structural diagram of the variable-diameter clamping block 223 in the clamp assembly 22 provided in this embodiment. As Figure 2 、 Figure 3 and Figure 4As shown, in a possible implementation, the variable-diameter clamping block 223 includes: a first clamping block 2231 and a second clamping block 2232. Both the first clamping block 2231 and the second clamping block 2232 are arc-shaped structures, and positioning grooves are provided on the outer sides. Limiting steps 224 are provided on the first hoop bracket 221 and the hoop 222. The first hoop bracket 221 is clamped to the positioning groove of the first clamping block 2231 through the corresponding limiting step 224, and the hoop 222 is sleeved in the positioning groove of the second clamping block 2232 through the corresponding limiting step 224.

[0070] Among them, the variable-diameter clamping block 223 is divided into a first clamping block 2231 and a second clamping block 2232, and these two clamping blocks cooperate together to clamp the first conduit 4. Both the first clamping block 2231 and the second clamping block 2232 are arc-shaped structures, so that they can closely fit and wrap around the circumferential surface of the first conduit 4. The arc-shaped structure can also provide better clamping force, which helps to keep the circular cross-section of the conduit from being squeezed and deformed.

[0071] It can be understood that positioning grooves are provided on the outer sides of the first clamping block 2231 and the second clamping block 2232. The positioning grooves can cooperate with the limiting steps 224 on the first hoop bracket 221 and the hoop 222 to achieve precise positioning and fixation of the clamping blocks. The positioning grooves can increase the stability and reliability of the clamping system. Limiting steps are provided on both the first hoop bracket 221 and the hoop 222. The limiting steps can match the positioning grooves on the clamping blocks. When the clamping blocks are placed in the correct positions, the limiting steps will catch the first clamping block 2231 or the second clamping block 2232, thereby preventing the clamping blocks from moving or falling off during the clamping process.

[0072] Specifically, the first hoop bracket 221 is clamped to the positioning groove of the first clamping block 2231 through the limiting step 224 thereon, so that the first clamping block 2231 can be firmly fixed on the bracket; the hoop 222 is sleeved in the positioning groove of the second clamping block 2232 through the limiting step 224 thereon. The hoop 222 can rotate freely around the second clamping block 2232 when adjusting the clamping range to provide sufficient clamping force when tightening.

[0073] During use, the variable-diameter clamping block 223 enables the clamp gauge to more flexibly adapt to conduits of different diameters, and can maintain the stability and accuracy of the conduit during the clamping process. Through the cooperation of the limiting steps 224 and the positioning grooves, the clamping blocks can be accurately positioned and fixed, thereby improving the reliability and durability of the entire device.

[0074] Such as Figure 2As shown, in a possible implementation, there is a gap 225 between the first hoop bracket 221 and the hoop 222; the first clamping block 2231 and the second clamping block 2232 are of the same size, and a first through hole for the first conduit 4 to pass through is formed between the first clamping block 2231 and the second clamping block 2232. The aperture of the first through hole matches the outer diameter of the first conduit 4, so that the first clamping block 2231 and the second clamping block 2232 are in interference fit with the first conduit 4.

[0075] Among them, the existence of the gap 225 between the first hoop bracket 221 and the hoop 222 can increase the interference amount during the hooping process of the hoop assembly 22. The gap 225 between the first hoop bracket 221 and the hoop 222 provides sufficient adjustment space for the hoop. During the hooping process, the hoop 222 can move along the guiding structure of the bracket to clamp the first conduit 4. The setting of the interference amount can better adapt to and clamp the first conduit 4. When the hoop 222 is completely closed and clamps the first conduit 4, an additional compression amount, that is, the interference amount, can be generated between the hoop 222 and the first hoop bracket 221 through the gap 225, so that the hoop assembly 22 is in close fit with the first conduit 4, thereby improving the clamping stability and reliability.

[0076] Specifically, the gap 225 can enable the hoop assembly 22 to adapt to the first conduits 4 with different outer diameters to a certain extent. By adjusting the tightening degree of the hoop 222, the relative position between the hoop 222 and the first hoop bracket 221 can be changed, so as to realize the clamping of different outer diameters.

[0077] It can be understood that the first clamping block 2231 and the second clamping block 2232 are components of the variable-diameter clamping block 223. The first clamping block 2231 and the second clamping block 2232 have the same size and can cooperate to form the first through hole. Since the first clamping block 2231 and the second clamping block 2232 are respectively arranged on the first hoop bracket 221 and the hoop 222, and there is a gap 225 between the first hoop bracket 221 and the hoop 222, the first through hole is not a closed hole, and there is also a certain gap between the first clamping block 2231 and the second clamping block 2232. The size of this gap has a certain correlation with the gap 225, and can cooperate with the first hoop bracket 22 and the hoop 222 to realize the adjustment of the interference amount. The aperture of the first through hole matches the outer diameter of the first conduit 4, and interference fit connection can be realized.

[0078] It should be noted that interference fit connection is a mechanical connection method. After the mating surfaces of the two components are assembled, a certain interference or pressure will be generated, and this pressure can make the two components be tightly combined together, thereby improving the reliability and sealing performance of the connection. The first clamping block 2231 and the second clamping block 2232 are connected to the first conduit 4 through interference fit, which can ensure that the conduit is firmly clamped and can also prevent the first conduit 4 from sliding during the working process.

[0079] As Figure 1 and Figure 2 shown, in a possible implementation, the first bracket 2 further includes: a sliding component 21; the top of the sliding component 21 is connected to the hoop component 22, and under the action of an external force, the hoop component 22 makes the first conduit 4 clamped by it slide through the sliding component 21.

[0080] Among them, the sliding component 21 can realize the horizontal movement of the first conduit 4. Through the sliding component 21, the hoop component 22 can drive the first conduit 4 clamped by it to move in the horizontal direction along a preset track or path under the action of an external force such as manual operation, motor drive, etc., making the pipeline docking during the flowmeter calibration process more flexible and accurate. Such movement can be linear and continuous, or intermittent and step-by-step. The present application does not limit the specific movement mode here.

[0081] It can be understood that the top of the sliding component 21 is connected to the hoop component 22, providing a stable support structure for the hoop component, and ensuring that when moving through the sliding component, the hoop component 22 and the first conduit 4 clamped by it can move as a whole.

[0082] Figure 5 This is a side view of the first bracket 2 in a clamp for this embodiment. As Figure 2 and Figure 5 shown, in a possible implementation, the number of hoop components 22 is two, and the sliding component 21 includes: two slide rails 211 and two groups of sliders 212; the two slide rails 211 are both fixedly connected to the fixed platform 1; the two groups of sliders 212 are respectively arranged on the corresponding slide rails 211 and are fixedly connected to two first hoop brackets 221; the two first hoop brackets 221 slide along the extension direction of the corresponding slide rails 211 under the action of an external force.

[0083] Among them, the number of hoop components 22 is two, that is, the number of the first hoop brackets 221 and the hoops 222 is both two. The two groups of sliders 212 are fixedly connected to the bottoms of the two first hoop brackets 221 to drive the two first hoop brackets 221 to slide simultaneously along the extension direction of the slide rails 211.

[0084] The two slide rails 211 are fixedly connected to the fixed platform 1, which can provide a stable and smooth sliding path for the sliders 212. The slide rails 211 can, for example, ensure their wear resistance, load-bearing capacity, and straightness to ensure that the sliders 212 can maintain stability and accuracy during the sliding process.

[0085] It can be understood that each group of sliders 212 includes at least one slider unit, which is respectively installed on the corresponding slide rail 211. The slider 212 is fixedly connected to the first hoop bracket 221. When the two first hoop brackets 221 slide along the extension direction of the corresponding slide rail 211 under the action of an external force, the slider 212 slides on the slide rail 211 to drive the first hoop bracket 221 and the hoop 222 and the first conduit 4 installed thereon to move together. The realization of the sliding can depend on the application of an external force, and the external force can be, for example, manual operations such as a handle, a knob, etc., or can be an automated device such as a motor, a cylinder, etc. When an external force acts on the mechanism connected to the slider, the slider can be driven to slide on the slide rail, thereby realizing the adjustment of the position of the first conduit 4.

[0086] In this embodiment, since the two groups of sliders 212 are respectively fixedly connected to the two first hoop brackets 221 and are respectively installed on two parallel slide rails 211, under the action of an external force, the two groups of sliders will slide along the direction of the slide rail simultaneously. The characteristic of synchronous sliding can ensure the stability and consistency of the first conduit 4 during the movement, and avoid deviations or distortions caused by non-synchronization.

[0087] During the use process, the sliding assembly 21 realizes the precise control and flexible adjustment of the position of the first conduit 4. When it is necessary to adjust the position of the conduit or perform multiple repeated calibrations, an appropriate external force can be applied to drive the slider to slide on the slide rail, thereby driving the first conduit 4 to move along a preset path.

[0088] As Figure 1 、 Figure 2 and Figure 3 shown, in a possible implementation manner, a clamp meter further includes: a power assembly 6; the power assembly 6 includes: two cylinders 61, a bottom plate 62 and a side plate 63. The cylinder 61 includes: a power member 611 and two output ends 612; the bottom plate 62 is fixedly connected to the fixed platform 1, the side plate 63 is fixedly connected to the bottom plate 62, and one side of the side plate 63 is fixedly connected to one end of the power member 611 of the cylinder 61; one of the two output ends 612 is fixedly connected to the first hoop bracket 221, and the other output end 612 passes through the side plate 63 and is fixedly connected to the other first hoop bracket 221.

[0089] Wherein, both ends of each power assembly 6 are respectively connected to one end of the two first hoop brackets 221 to push the two first hoop brackets 221 to slide along the direction of the slide rail 211 simultaneously. The two power assemblies 6 can enhance the functionality and automation degree of the device, and through this connection method, the power assembly can directly act on the hoop bracket, thereby effectively pushing the first hoop bracket 221 to slide along the direction of the slide rail 211. The connection part can be, for example, movably connected by a fish-eye joint to withstand the force generated during the pushing process and maintain the smoothness of the sliding.

[0090] It is understandable that the two cylinders 61 serve as power sources, and the cylinders 61 can generate linear motion through the pressure change inside them. Each cylinder 61 includes a power component 611 and two output ends 612. Among them, the power component 611 is the cylinder block part of the cylinder, which contains a piston and a seal, and the reciprocating motion of the piston can be controlled by the supply of an external air source; the output ends 612 are piston rods or similar structures, and they extend or retract as the piston moves, thereby transmitting power.

[0091] Specifically, the bottom plate 62 is the basic part of the power assembly 6 and is fixedly connected to the fixed table 1, which can ensure the stability of the power assembly 6 during the working process and prevent displacement caused by vibration or external forces. The side plate 63 is fixedly connected to the bottom plate 62, which can form a stable support structure. One side of the side plate 63 is fixedly connected to one end of the power component 611 of the cylinder 61, which can increase the stability of the power component 611, fixedly support it when the power component 611 is working, and ensure the stable output of power.

[0092] In this embodiment, the cylinder 61 can be a double-headed cylinder. The double-headed cylinder has two opposite working ends, and each working end can generate thrust independently or simultaneously. The two working ends can be respectively connected to two first hoop brackets 221, and they are pushed to slide along the direction of the slide rail 211 by synchronous thrust. When the power component 611 of the cylinder 61 receives the pressure of the external air source, the piston starts to move and drives the two output ends 612 to extend or retract simultaneously. One output end 612 is fixedly connected to the first hoop bracket 221, and the other output end 612 passes through the side plate 63 and is fixedly connected to the other first hoop bracket 221. When the cylinder 61 works, the two first hoop brackets 221 can slide simultaneously and synchronously along the extension direction of the slide rail 211.

[0093] During the use process, when it is necessary to clamp or move the first conduit 4, the external air source can provide pressure to the cylinder 61 to make the cylinder 61 start to work. The output end 612 of the cylinder 61 pushes the first hoop bracket to slide along the extension direction of the slide rail 211. Thus, the first hoop bracket 221 drives the hoop assembly 22 and the clamped first conduit 4 to move horizontally, realizing precise docking or position adjustment with the meter to be inspected.

[0094] Figure 6 Schematic structural diagram of the second bracket 3 in a meter clamp provided for this embodiment. As Figure 1 and Figure 6As shown, in a possible implementation, the second bracket 3 includes: two second hoop brackets 31 and two hoops 222; the two hoops 222 are respectively fixedly connected to the two second hoop brackets 31; a second through hole for the second conduit 5 to pass through is formed between the hoop 222 and the second hoop bracket 31, and the second conduit 5 passes through the second through hole and is fixedly connected to the second bracket 3, and the aperture of the second through hole matches the diameter of the second conduit 5.

[0095] Among them, the two hoops 222 are the same as the hoops in the first bracket 2, and the hoops 222 are also used for clamping and fixing the conduit. However, the hoop 222 is fixedly connected to the second hoop bracket 31 at this time to form a second through hole for the second conduit 5 to pass through. The hoop 222 and the second hoop bracket 31 can be fixedly connected by, for example, bolts, welding, etc., to ensure that the hoop 222 does not move relative to the second hoop bracket 31 during operation. The aperture of the second through hole matches the diameter of the second conduit 5, which can ensure that the second conduit 5 can smoothly pass through it and is firmly clamped in place.

[0096] It can be understood that clamping blocks can be provided between the second hoop bracket 31 and the two hoops 222, which is similar to the function of the reducing clamping block 223. According to the diameters of different second conduits 5, the aperture of the second through hole can be adjusted. The second conduit 5 passes through the second through hole and penetrates the second bracket 3, and is fixedly connected to the second bracket 3.

[0097] During use, the second bracket 3 tightly clamps the second conduit 5 through the cooperative action of its two second hoop brackets 31 and hoops 222, ensuring the precise position of the second conduit 5 and improving the overall performance and reliability of the entire clamp meter.

[0098] As Figure 1 shown, in a possible implementation, a third bracket 7 is provided on the upper surface of the fixed platform 1; the third bracket 7 is arranged between the first bracket 2 and the second bracket 3; the third bracket 7 includes: two support components 71, and the two support components 71 are connected to the upper surface of the fixed platform 1, and the support components 71 are used for supporting the meter to be inspected.

[0099] Among them, in the flowmeter calibration device, the third bracket 7 on the upper surface of the fixed platform 1 is fixed between the first bracket 2 and the second bracket 3 and can be used for supporting the meter to be inspected.

[0100] During use, by arranging the third bracket 7 between the first bracket 2 and the second bracket 3 and adjusting its height and position, it can be ensured that the axes of the meter to be inspected and the first conduit 4 are on the same horizontal plane. The horizontal plane calibration can eliminate the medium pressure difference caused by the height difference, so as to ensure that the medium has the same flow conditions when flowing through each component.

[0101] It can be understood that, for the convenience of calibration operation, the third support 7 can, for example, also be a support with adjustable height so as to be adjusted according to the sizes and installation requirements of different meters to be calibrated; meanwhile, a quick locking mechanism can also be provided so as to quickly lock the position of the meter to be calibrated after it is fixed, preventing accidental movement during the calibration process.

[0102] In a possible implementation manner, the third support 7 is composed of two support components 71, and the two support components 71 are movably connected to the upper surface of the fixed table 1. The movably connected support components 71 can be adjusted in position on the fixed table 1 to meet different installation requirements. The height of the support component 71 can be determined according to the set heights of the first conduit 4 and the second conduit 5. By adjusting the height of the support component 71, it can be ensured that the pipe orifices at both ends of the meter to be calibrated and the axes of the first conduit 4 and the second conduit 5 are on the same horizontal plane, ensuring the flow of the medium among the meter to be calibrated, the first conduit, and the second conduit during the calibration process and improving the accuracy of the calibration result.

[0103] In this embodiment, by precisely adjusting the position and angle of the support component 71, it can be ensured that the pipe orifices at both ends of the meter to be calibrated are in close contact with the pipe orifices of the first conduit 4 and the second conduit 5 respectively, which helps to reduce leakage and errors during the test process and improve the precision and efficiency of the test.

[0104] During use, the support component 71 can be flexibly installed and disassembled. When it is necessary to replace the meter to be calibrated or perform other maintenance work, the replacement or other work can be completed by adjusting or removing the support component 71. The height adjustment of the support component 71 can be achieved, for example, through threaded connection, slide rail structure, or other adjustable mechanical devices. The adjustment mechanism can be provided with a locking mechanism to ensure that after the height is adjusted, the support component 71 can be firmly held in the required position and will not move accidentally during the calibration process.

[0105] It should be noted that the implementation manner of the support component 71 can be adjusted according to the design of the meter clamp. For example, it can be through adjustable support arms, fixtures, brackets and other structures. Such structures can be connected to the fixed table 1 through threaded connection, sliding connection, rotary connection, etc., and can be finely adjusted to adapt to different meters to be calibrated. The present application does not limit the specific implementation form of the support component and the connection manner with the fixed table 1 here.

[0106] As Figure 1 shown, in a possible implementation manner, a first flange 42 is provided at the first pipe orifice 41 of the first conduit 4, and the first flange 42 is used to abut against the inlet end of the meter to be calibrated; a second flange 52 is provided at the second pipe orifice 51 of the second conduit 5, and the second flange 52 is used to abut against the outlet end of the meter to be calibrated.

[0107] Among them, the first conduit 4 and the second conduit 5 can be used as standard conduits in the meter clamping device, which are respectively connected to the inlet end and the outlet end of the meter to be tested, and the tightness and stability of the connection are realized through the provided flange structure, thereby enhancing the sealing effect at the interface.

[0108] It can be understood that the first pipe orifice 41 is the end of the first conduit 4 connected to the meter to be tested. Through the first pipe orifice 41, the calibration medium can be guided to the inlet end of the meter to be tested. The first flange 42 is arranged around the first pipe orifice 41. The first flange 42 can ensure the tight abutment of the first conduit 4 and the meter to be tested. An abutment surface is formed with the meter to be tested through its sealing surface to achieve effective sealing and prevent fluid leakage at the connection.

[0109] Similarly, the second pipe orifice 51 is the end of the second conduit 5 connected to the meter to be tested, and can export the medium after the meter to be tested is calibrated. The second flange 52 is arranged around the second pipe orifice 51 and is used for tightly abutting against the outlet end of the meter to be tested. The second flange 52 also has the functions of support, positioning and sealing, ensuring that the fluid can smoothly enter the second conduit 5 without leakage after passing through the meter to be tested.

[0110] In this embodiment, the flange can make the connection between the conduit and the meter to be tested tighter, reducing the problem of fluid leakage caused by loose connection or poor sealing. At the same time, the flange can provide an additional support surface, making the installation of the conduit on the meter to be tested more stable and not easily displaced or detached due to external forces.

[0111] It should be noted that the first pipe orifice 41 and the second pipe orifice 51 are arranged opposite to each other to ensure that a medium circulation path can be formed among the first conduit, the meter to be tested and the second conduit after connection.

[0112] As Figure 1 shown, the present application provides a flowmeter calibration device, and the flowmeter calibration device includes a meter clamping device in various possible implementation manners described above.

[0113] Through various functions of the meter clamping device, including the sliding assembly 21 and the hoop assembly 22 of the first bracket 2, the fixed support of the second bracket 3, and the precise docking of the third bracket 7 to the meter to be tested, it can be ensured that during the calibration process, a tight connection is achieved between the two ends of the flowmeter and the standard conduits, namely the first conduit 4 and the second conduit 5.

[0114] In summary, the embodiments of the present application provide a clamp and a flowmeter calibration device. The hoop assembly 22 in the first bracket 2 includes: two first hoop brackets 221 and two hoops 222; one end of the hoop 222 is rotatably connected to the corresponding first hoop bracket 221, and the other end is movably connected to the first hoop bracket 221; the two first hoop brackets 221 and the two hoops 222 clamp the first conduit through the variable-diameter clamping blocks 223 provided inside, wherein the size of the variable-diameter clamping block 223 matches the pipe diameter of the first conduit 4. By matching the variable-diameter clamping block 223 with the pipe diameter of the first conduit 4, it is applicable to the meters to be calibrated with different calibers, and solves the problem in the prior art that the meters to be calibrated with different calibers cannot be clamped compatibly.

[0115] The following is an example of the use process of the clamp and the flowmeter calibration device. After selecting the meter to be calibrated, determine the corresponding variable-diameter clamping block 223, the first conduit 4 and the second conduit 5 according to the caliber of the meter to be calibrated, and respectively clamp the selected variable-diameter clamping block 223, the first conduit 4 and the second conduit 5 into the first hoop bracket 221 and the second hoop bracket 31; adjust the support assembly 71 to an appropriate position and height so that the meter to be supported is on the same horizontal plane as the first conduit 4 and the second conduit 5, place the meter to be calibrated on the support assembly 71 of the third bracket 7, start the power assembly 6 to push the hoop assembly 22 to drive the first conduit 4 to move along the direction of the slide rail 211 until the first conduit 4 and the second conduit 5 reach the position where they are in contact with the meter to be calibrated, so that the first conduit 4, the second conduit 5 and the pipeline of the meter to be calibrated are tightly connected. After the connection is completed, the calibration device can be started to calibrate the meter to be calibrated.

[0116] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0117] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the disclosure herein. The present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the scope of the present application is only limited by the appended claims.

Claims

1. A meter clamp, characterized in that: include: A fixing platform (1), a first bracket (2), a second bracket (3), a first conduit (4) and a second conduit (5); One end of the fixing platform (1) is fixedly connected to the first bracket (2), and the other end is fixedly connected to the second bracket (3); The first bracket (2) comprises: a clamp assembly (22), the clamp assembly (22) is used to clamp the first conduit (4), and the second bracket (3) is used to clamp the second conduit (5); The clamp assembly (22) comprises: a first clamp bracket (221) and a clamp (222); One end of the clamp (222) is rotatably connected to the corresponding first clamp bracket (221), and the other end is detachably connected to the first clamp bracket (221); The first clamp bracket (221) and the clamp (222) clamp the first conduit (4) via a reducing clamp block (223) arranged inside, wherein the size of the reducing clamp block (223) matches the diameter of the first conduit (4).

2. The meter clamp according to claim 1, characterized in that: The diameter-changing clamping block (223) comprises: a first clamping block (2231) and a second clamping block (2232); the first clamping block (2231) and the second clamping block (2232) are both arc-shaped structures and are both provided with positioning grooves on the outer sides; and the first clamping bracket (221) and the clamping hoop (222) are provided with limiting steps (224); The first clamp bracket (221) is clamped with the positioning groove of the first clamp block (2231) via a corresponding limiting step (224), and the clamp (222) is sleeved in the positioning groove of the second clamp block (2232) via a corresponding limiting step (224).

3. The meter clamp according to claim 2, characterized in that: There is a gap (225) between the first clamp bracket (221) and the clamp (222); The first clamp block (2231) and the second clamp block (2232) have the same size, and a first through hole for the first conduit (4) to pass through is formed between the first clamp block (2231) and the second clamp block (2232), and the aperture of the first through hole matches the diameter of the first conduit (4), so that the first clamp block (2231) and the second clamp block (2232) are interference fit with the first conduit (4).

4. The meter clamp according to claim 1, characterized in that: The first bracket (2) further comprises: a sliding assembly (21); The top of the sliding component (21) is connected to the clamping hoop component (22), and under the action of an external force, the clamping hoop component (22) causes the first conduit (4) clamped by the clamping hoop component (22) to slide through the sliding component (21).

5. The meter clamp according to claim 4, characterized in that: The number of the clamping hoop assemblies (22) is two, and the sliding assembly (21) comprises: two slide rails (211) and two sets of slide blocks (212); The two slide rails (211) are both fixedly connected to the fixed platform (1); The two groups of sliding blocks (212) are respectively arranged on the corresponding sliding rails (211), and are respectively fixedly connected to the two first clamp brackets (221); The two first clamp brackets (221) slide along the extension direction of the corresponding slide rails (211) under the action of external force.

6. The meter clamp according to claim 1, characterized in that: The meter clamp further comprises: a power assembly (6); The power assembly (6) comprises: two cylinders (61), a bottom plate (62) and a side plate (63); the cylinder (61) comprises: a power part (611) and two output ends (612); The bottom plate (62) is fixedly connected to the fixed platform (1), the side plate (63) is fixedly connected to the bottom plate (62), and one side of the side plate (63) is fixedly connected to one end of the power part (611) of the cylinder (61); One of the two output ends (612) is fixedly connected to the first clamp bracket (221), and the other output end (612) passes through the side plate (63) and is fixedly connected to the other first clamp bracket (221).

7. The meter clamp according to claim 1, characterized in that: The second bracket (3) comprises: two second clamp brackets (31) and two clamps (222); The two clamps (222) are fixedly connected to the two second clamp brackets (31) respectively; A second through hole for the second conduit (5) to pass through is formed between the clamp (222) and the second clamp bracket (31); the second conduit (5) passes through the second through hole and is fixedly connected to the second bracket (3); the aperture of the second through hole matches the diameter of the second conduit (5).

8. The meter clamp according to claim 1, characterized in that: A third bracket (7) is provided on the upper surface of the fixing platform (1); The third bracket (7) is arranged between the first bracket (2) and the second bracket (3); The third bracket (7) comprises: two supporting components (71); The two support components (71) are connected to the upper surface of the fixing platform (1), and the support components (71) are used to support the meter to be inspected.

9. The meter clamp according to claim 1, characterized in that: The first pipe opening (41) of the first conduit (4) is provided with a first flange (42), and the first flange (42) is used to abut against the inlet end of the meter under inspection; The second pipe opening (51) of the second conduit (5) is provided with a second flange (52), and the second flange (52) is used to abut against the outlet end of the meter under test.

10. A flow meter calibration device, characterized in that: The flow meter calibration device includes the meter clamp as described in any one of claims 1 to 9.

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