CN202083574U - Tank Sampling Flexible Float Arm Tracking System - Google Patents

Abstract

The utility model discloses a special flexible floating arm tracker for storage tank sampling. The sampling device mainly comprises a floating ball (a vault tank), a floating disc (a floating roof tank), a hollow straight arm, an elastic element, a lifting lug, a hinge joint, a sampling valve and a sampling pipe. The hollow straight arm and the elastic element form a flexible supporting arm, and the flexible supporting arm is in an approximate zero gravity state in a medium and keeps a straight line form under the action of the elastic element, so that a sampling point attached to the supporting arm can be accurately sampled in proportion. The flexible structure of the support arm disperses the structural stress to the greatest extent and reduces the damage to accessories in the tank. Therefore, the use is safe, convenient and reliable.

Description

Tank Sampling Flexible Float Arm Tracking System

Technical field

The utility model designs a flexible floating arm tracking system for collecting liquid samples in storage tanks in petroleum, chemical industry or other fields, especially a special tracking system for proportional sampling and uniform sampling.

technical background

In the production process of petroleum, chemical industry or other industries, when raw materials, semi-finished products and finished products are stored, it is necessary to continuously collect representative samples for laboratory analysis. At present, the most commonly used in storage tanks are ordinary rigid single arm and rigid folded arm sampling. Rigid single-arm sampling is mainly used in vaulted tanks. For tanks with large tank heights, the support arms are relatively long, resulting in the weight of the entire rigid floating arm being too heavy, which is easy to bend and break, thus shortening the service life and making maintenance more troublesome. , At the same time, it is also easy to cause damage to facilities with mechanisms such as heating pipelines in the tank. The rigid folding arm mechanism is mainly used in floating roof tanks. It is suspended on the floating plate. Due to the certain weight of the rigid folding arm mechanism, a vertical pulling force will be generated on the floating ship, and this pulling force is relatively low at the position of the floating plate. When the force is greater than 150KG, the pontoon is easy to wear or even capsize, which also increases the workload of the maintenance personnel. Therefore, the service life of these two storage tank sampling devices is relatively short, which also affects the accuracy of sampling to some extent. Now there is a storage tank homogeneous sampler (patent number: 03239363), which is through a flange similar to a manhole in the lower part of the storage tank, and the end of the sampler main body with a homogeneous tube is sealed and installed in the storage tank, and with One end of the sampling interface valve is placed outside the storage tank, and the sampling interface valve communicates with the floating ball and the homogeneous tube with multiple liquid inlets through the inner tube. This sampler mainly solves the problem of uniform sampling in the tank but cannot complete proportional sampling.

Contents of the invention

In order to overcome the defects of the existing storage tank sampler in terms of service life and safety, the utility model proposes a flexible floating arm tracking system for storage tank sampling. The principle of the flexible floating arm tracking system is as follows: the support arm in the tank is a flexible structure, and when the storage tank is filled with medium, the buoyancy of the support arm is similar to its own gravity. And when the medium is filled, the support arm can maintain a straight state. This kind of floating arm not only ensures the accuracy of sample collection, but at the same time, this kind of floating arm presents a "weightless" state in the storage tank and does not produce any force on the floating boat, which ensures the service life of the floating boat. In addition, due to its flexible structure, when there is no medium in the tank, various components (such as agitators, etc.) in the tank can be bypassed without causing damage to it.

In order to achieve the above object, the technical scheme of the utility model is as follows: the flexible floating arm is composed of multiple hollow straight arms, the hollow straight arms are hollow structures, and the multiple hollow straight arms are connected by springs to form a set of flexible mechanisms, and the The total buoyancy of the hollow straight arm in the medium is similar to the total gravity of the mechanism, so the mechanism is a linear mechanism in the medium. There are specific sampling points on the support arm, which are connected to the sampling interface outside the tank through flexible sampling tubes, so as to achieve the purpose of sampling at a certain ratio. The flexible mechanism can disperse the stress and reduce the chance of damage to the accessories in the tank when the medium in the tank is violently disturbed. At the same time, when the pontoon or the floating ball encounters an obstacle during the process of ascending or descending, it will retreat sensitively or make a detour. , thus protecting the relative safety of the mechanism in the tank.

The utility model is reasonable in design, convenient and reliable in use, and is suitable for any floating roof tank and vault roof tank. In particular, the utility model adopts a zero-gravity flexible tracking mechanism, which causes little damage to the internal components of the tank. Therefore, the service life is greatly extended.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of the flexible floating arm tracking system of the floating roof tank in the utility model.

Fig. 2 is a principle diagram of the flexible floating arm tracking system of the vaulted tank in the utility model.

In the figure 1, floating plate, 2, floating ball, 3, hollow straight arm, 4, elastic element, 5, lifting lug, 6, sampling valve, 7, hinge, 8, sampling pipe, 9, floating roof tank, 10, vault tank

Detailed ways

In conjunction with accompanying drawing, provide the embodiment of the present utility model as follows:

As shown in Figure 1, this embodiment is mainly composed of a hollow straight arm (3), an elastic element (4), a lifting lug (5), a sampling valve (6), a hinge (7), and a sampling tube (8). The hollow straight arm (3) and the elastic element (4) are connected to each other to form an upper arm and a lower arm, and the upper and lower arms are hinged (7) to form a folding arm mechanism, and the lower part of the folding arm mechanism is fixed to the floating The top tank (9) bottom and top are fixed on the floating plate (1) by lifting lugs (5). A flexible sampling tube (8) is fixed on the folding arm according to the position required by the user, and the sampling tube (8) is led out of the tank to connect with the sampling valve (6). In this way, when the liquid level of the medium in the floating roof tank (9) changes, the floating plate (1) also rises and falls, and the floating plate (1) drives the folding arm mechanism to move, and the position of the sampling point also moves proportionally, opening the tank The sample at the corresponding position can be collected by the external sampling valve (6).

As shown in Figure 2, this embodiment is mainly composed of a hollow straight arm (3), an elastic element (4), a lifting lug (5), a sampling valve (6), a hinge (7), and a sampling tube (8). The hollow straight arm (3) and the elastic element (4) are connected to each other to form a flexible support arm structure. The lower part of the flexible support arm mechanism is fixed to the bottom of the vault tank (10) through the hinge (7), and the upper part is fixed to the floating structure through the lifting lug (5). over the ball (2). A flexible sampling tube (8) is fixed on the folding arm according to the position required by the user, and the sampling tube (8) is led out of the tank to connect with the sampling valve (6). In this way, when the liquid level of the medium in the vault tank (10) changes, the floating ball (2) also rises and falls, and the floating ball (2) drives the flexible arm mechanism to move, and the position of the sampling point also moves proportionally, opening the The sample at the corresponding position can be collected by the sampling valve (6) outside the tank.

Claims (1)

1. the storage tank of a special use flexible floating arm tracker of sampling, it is characterized in that: its support arm connects to form flexible floating arm by hollow straight-arm (3) and flexible member (4), and overall buoyancy and its gravity approximately equal of flexible floating arm in the storage tank medium keeps its form of straight lines under the effect of flexible member.

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