A flow meter verification auxiliary loading and unloading device
By designing an auxiliary loading and unloading device that includes a flatbed truck, slide rails, and a lift, the problems of low construction efficiency and safety hazards in the flowmeter calibration process are solved, enabling flexible movement and precise support, and making it suitable for narrow spaces in complex well site environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-07
AI Technical Summary
The current flowmeter calibration process is time-consuming and labor-intensive, and in complex well site environments, tools such as cranes and ladder trucks cannot enter, leading to construction difficulties and safety hazards.
Design an auxiliary loading and unloading device that includes a flatbed truck, slide rails, slide table, and hand-cranked and hydraulic lifters. The spacing and height of the flow meters can be adjusted by the hand-cranked and hydraulic lifters, and a sliding locking mechanism can be used to achieve flexible movement and precise support, making it suitable for construction in narrow spaces.
It improves the efficiency of flow meter calibration, reduces labor costs, solves the construction difficulties in narrow spaces, and enhances construction safety.
Smart Images

Figure CN224467460U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oilfield pipeline maintenance, specifically a flow meter calibration auxiliary loading and unloading device. Background Technology
[0002] Flow rate is one of the important parameters in production management in the oil and petrochemical industry, and it is usually measured and monitored using flow meters. Flow meter calibration is an important guarantee for measurement accuracy and safe production, and it is currently divided into two methods: offline calibration and online calibration.
[0003] Offline verification involves removing the flow meter from its installation location at the production site and sending it to a metrology institution for verification. The flow meter needs to be manually disassembled and reassembled twice during the entire verification process.
[0004] Because the flow meter itself is heavy, the existing disassembly and installation process usually requires multiple professionals to work together hand in hand or to use tools such as cranes and ladder trucks (such as the ladder truck and construction platform disclosed in CN222293552U) for special operations. This is time-consuming and labor-intensive, and poses safety hazards such as falling objects, collisions and injuries, and damage to special equipment.
[0005] In addition, due to the complex pipeline network within the well site, cranes and ladder trucks cannot enter the construction area, preventing normal construction from proceeding. Utility Model Content
[0006] The purpose of this utility model is to address the shortcomings of existing technologies by providing an auxiliary loading and unloading device for flow meter calibration. This device has flexible mobility and can lift and support flow meters at different heights, thereby facilitating construction work and improving efficiency. In particular, it can be applied to construction in narrow spaces, solving the problem that ladder trucks and cranes cannot enter the complex well site environment for construction work.
[0007] The technical solution of this utility model is: a flow meter calibration auxiliary loading and unloading device, including a flatbed cart, a push handle is provided on one side of the flatbed cart, a set of slide rails is provided on the top of the flatbed cart, and three horizontally arranged slide platforms are slidably connected on the slide rails, and each slide platform is provided with a sliding locking mechanism that cooperates with the slide rail.
[0008] Both of the two sliding platforms on both sides are equipped with hand-cranked lifters, and the top of the hand-cranked lifters is equipped with a support frame. The sliding platform in the middle is equipped with a hydraulic lifter, and the top of the hydraulic lifter is equipped with a support platform.
[0009] Preferably, the sliding locking mechanism is a tightening bolt that is vertically threaded and connected to the slide table, and the slide table position is locked by the slide rail supported by the bottom of the tightening bolt.
[0010] Preferably, the flatbed truck is equipped with a set of omnidirectional wheels with brakes at the bottom.
[0011] Preferably, the flatbed truck has a set of baffles around its top, which are then assembled into a truck bed.
[0012] Preferably, the hydraulic lift is a scissor lift.
[0013] Preferably, the longitudinal section of the support frame has a V-shaped structure.
[0014] Compared with the prior art, this utility model has the following advantages:
[0015] This utility model has flexible mobility and can lift and support flow meters at different heights, thereby facilitating construction and improving construction efficiency.
[0016] In particular, it can be applied to construction in narrow spaces, solving the problem that ladder trucks and cranes cannot enter the complex well site environment to cooperate with construction.
[0017] By arranging the hand-cranked and hydraulic lifters on the slide, the spacing between them can be adjusted according to the specific size of the flow meter. Using the hydraulic lifter to support the main body of the flow meter is more labor-saving, while using the hand-cranked lifter to support the two ends of the flow meter allows for more precise adjustment of the height at both ends, facilitating proper installation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] In the diagram: 1. Handrail, 2. Flatbed trolley, 3. Baffle, 4. Casters, 5. Support frame, 6. Hand-cranked lift, 7. Support platform, 8. Hydraulic lift, 9. Slide table, 10. Sliding locking mechanism, 11. Slide rail. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1
[0021] like Figure 1 A flow meter calibration auxiliary loading and unloading device includes a flatbed trolley 2. The bottom of the flatbed trolley 2 is equipped with a set of universal wheels 4 with brakes. The universal wheels 4 move flexibly, making it easy to enter the construction area and adjust the construction position. The braking function can lock the position of the flatbed trolley 2, which facilitates stable support during construction.
[0022] A push handle 1 is provided on one side of the flatbed 2, and a set of slide rails 11 is provided on the top of the flatbed 2. Three horizontally arranged slide tables 9 are slidably connected on the slide rails 11, and each slide table 9 is provided with a sliding locking mechanism 10 that cooperates with the slide rails 11.
[0023] Both sides of the slide 9 are equipped with hand-cranked lifters 6, and the top of the hand-cranked lifters 6 is equipped with a support frame 5.
[0024] A hydraulic lift 8 is installed on the slide 9 in the middle. The top of the hydraulic lift 8 is equipped with a support platform 7. The hydraulic lift 8 is a scissor lift.
[0025] The sliding locking mechanism 10 consists of a vertically arranged threaded bolt connected to the slide table 9, and the slide table 9 is locked in position by the bottom support slide rail 11 of the bolt.
[0026] Working principle:
[0027] By arranging the hand-cranked lifter 6 and the hydraulic lifter 8 on the slide table 9, the distance between them can be adjusted according to the specific size of the flow meter.
[0028] When disassembling the flow meter, the hydraulic lifter 8 is used to raise it to a suitable position to support the flow meter body. Then, the hand-cranked lifter 6 is used to raise and straighten the pipes connected to both ends of the flow meter.
[0029] After removing the bolts at both ends of the flow meter, the flow meter is separated from the connecting pipe by slowly lowering the height of the hydraulic lifter 8.
[0030] When installing the flow meter, place it on the support platform 7, raise the hydraulic lifter 8 to the appropriate position, and then adjust the hand-cranked lifter 6 to raise and lower it. The main purpose of using the hydraulic lifter 8 to support the main body of the flow meter is to save effort, while using the hand-cranked lifter 6 to support the positions of both ends of the flow meter allows for more precise adjustment of the height at both ends, facilitating alignment and installation. After fine-tuning the alignment, bolt the flow meter to the flanges of the pipes at both ends. Example 2
[0031] This embodiment is a further optimization based on the above embodiment, specifically:
[0032] The flatbed trolley 2 has a set of baffles 3 around its top, which are assembled into a cargo bed. The cargo bed can store tools such as wrenches, increasing the functionality of this utility model. Example 3
[0033] This embodiment is a further optimization based on the above embodiment, specifically:
[0034] In this embodiment, the support frame 5 has an overall V-shaped structure. The V-shaped structure makes it easier to support the flow meter or the pipes connected at both ends, and the support is more stable and reliable.
[0035] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.
Claims
1. A flowmeter calibration auxiliary loading and unloading device, comprising a flatbed trolley, wherein a handrail is provided on one side of the flatbed trolley, characterized in that: The flatbed is equipped with a set of slide rails on its top, and three horizontally arranged slide platforms are slidably connected on the slide rails. Each slide platform is equipped with a sliding locking mechanism that cooperates with the slide rail. Both of the two sliding platforms on both sides are equipped with hand-cranked lifters, and the top of the hand-cranked lifters is equipped with a support frame. The sliding platform in the middle is equipped with a hydraulic lifter, and the top of the hydraulic lifter is equipped with a support platform.
2. The auxiliary loading and unloading device for flowmeter calibration according to claim 1, characterized in that: The sliding locking mechanism consists of a vertically arranged threaded bolt connected to the slide table, and the slide table position is locked by the bottom support rail of the bolt.
3. The auxiliary loading and unloading device for flowmeter calibration according to claim 1, characterized in that: The flatbed truck is equipped with a set of swivel wheels with brakes at the bottom.
4. The auxiliary loading and unloading device for flowmeter calibration according to claim 1, characterized in that: The flatbed truck has a set of baffles around its top, which are then assembled into a truck bed.
5. The auxiliary loading and unloading device for flowmeter calibration according to claim 1, characterized in that: The hydraulic lift is a scissor lift.
6. The auxiliary loading and unloading device for flowmeter calibration according to claim 1, characterized in that: The support frame has an overall V-shaped structure.