CN210943148U

CN210943148U - Internal floating roof storage tank sampling device

Info

Publication number: CN210943148U
Application number: CN201921539833.XU
Authority: CN
Inventors: 葛阳; 李阳; 任超; 许学斌; 杨光
Original assignee: Hualu Engineering and Technology Co Ltd
Current assignee: Hualu Engineering and Technology Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-07-07
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses an interior floating roof storage tank sampling device, including sample funnel, last stand pipe, upper gasket, lower floor's gasket, stand pipe, full plane flange and corresponding fastener down, wherein go up the stand pipe top and be connected with sample funnel, lower stand pipe and the interior floating roof lower part space UNICOM of storage tank have a set of full plane flange in the welding between last stand pipe down, and upper gasket and lower floor's gasket stack the back according to the order and are fixed in on the full plane flange through the fastener. During sampling, a sampler is put in from a sampling port at the top of the storage tank, and the upper sealing sheet and the lower sealing sheet are sequentially pushed open by the gravity of the sampler and enter the lower part of the floating top along the guide pipe for sampling; after sampling, the sampler sequentially passes through the lower sealing sheet notch and the upper sealing sheet notch by the pulling force. The device has the advantages of simple structure, low cost, simple and convenient operation, good safety and good economic benefit.

Description

Internal floating roof storage tank sampling device

Technical Field

The utility model relates to an interior floating roof storage tank sampling device relates to oil vapour product warehousing and transportation field.

Background

The inner floating roof storage tank is commonly used for storing volatile, flammable and explosive media such as gasoline, kerosene, light diesel oil, benzene and the like, and is convenient for monitoring the quality of stored oil products, a sampling port is usually arranged on the tank roof, and a sampling device is arranged on the inner floating roof for sampling and testing. Most of sampling devices on the inner floating roof are not designed with a sealing structure, so that oil products on the inner floating roof are directly communicated with the space above the floating roof, certain oil product evaporation loss can be caused although the communication area is small, and meanwhile, the concentration of combustible gas in the gas phase space above the floating roof is possibly higher than the explosion limit, so that potential hazards are brought to the operation safety of a storage tank; although the sampling device on the partial inner floating roof is designed with the sealing structure, the sealing structure is complex, the sampling device needs to be manually opened and closed to sample, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior floating roof storage tank sampling device to reach following mesh:

a) the medium sampling can be carried out through the sampling device on the inner floating roof;

b) the evaporation loss of oil gas is avoided, the oil gas concentration of the gas phase space of the storage tank is reduced, and the environmental pollution is prevented;

c) the automatic and reliable sealing of the sampling device is realized, and the sampling operation steps and the method are simplified.

To achieve the above object, the technical solution of the present invention includes the following: the utility model provides an interior floating roof storage tank sampling device which characterized by: the device comprises a sampling funnel, an upper guide pipe, an upper sealing sheet, a lower guide pipe, full-plane flanges and corresponding fasteners, wherein the top end of the upper guide pipe is connected with the sampling funnel, the lower guide pipe is communicated with the lower space of a floating roof in a storage tank, the two full-plane flanges are welded between the upper guide pipe and the lower guide pipe, and the upper sealing sheet and the lower sealing sheet are fixed on the full-plane flanges through the fasteners after being stacked in sequence.

Preferably, the upper sealing sheet and the lower sealing sheet are all-plane gaskets, n groups of cross cutting are performed at the center of each gasket to form a central cut, the cutting length is 0.8-0.9 times of the inner diameter of the guide pipe, and the cutting angles are staggered 360/8n degrees.

Preferably, the material of the upper sealing sheet and the lower sealing sheet is Teflon material or rubber material.

Preferably, the inner floating roof tank sampling device is arranged on the inner floating roof of the tank and is communicated with the lower space of the inner floating roof through a lower guide pipe.

Preferably, the height of the sealing surface of the full-plane flange from the liquid level is between 50mm and 100 mm.

Preferably, during sampling, a sampler is placed from a sampling opening at the top of the storage tank, penetrates through a sampling funnel and an upper guide pipe, sequentially pushes open central notches of an upper sealing sheet and a lower sealing sheet by means of self gravity, and enters the storage tank along a lower guide pipe to float and top the lower part for sampling; after the sampling is finished, the sampler is taken out by depending on the pulling force and sequentially passing through the central notches of the lower sealing sheet and the upper sealing sheet, and the sampling is finished.

Preferably, when the sampler passes through the upper sealing sheet and the lower sealing sheet, the upper sealing sheet and the lower sealing sheet are opened along the cut, and when the sampler leaves the upper sealing sheet and the lower sealing sheet, the upper sealing sheet and the lower sealing sheet restore to be planar by self elasticity, so that automatic sealing is realized.

Compared with the prior art, the utility model discloses beneficial effect embodies as follows:

a) the utility model can realize the sampling purpose by the sampling device on the inner floating roof;

b) the utility model can avoid the evaporation loss of oil gas, reduce the concentration of oil gas in the gas phase space of the storage tank and prevent the environmental pollution;

c) the utility model discloses realize the automatic reliable sealed of sampling device to simplify sample operation step and method, avoid carrying out too much manual operation to sampling device.

Drawings

Fig. 1 is a schematic view of the inner floating roof tank sampling device of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a detailed view of the upper sealing piece of the present invention.

Fig. 4 is a detailed view of the lower sealing piece of the present invention.

Fig. 5 is a detailed view of the full-plane flange of the present invention.

In the drawings: 1-sampling funnel, 2-upper guide pipe, 3-upper sealing sheet, 4-lower sealing sheet, 5-lower guide pipe, 2, 6-full-plane flange, and 7-storage tank inner floating roof.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the internal floating roof storage tank sampling device mainly comprises a sampling funnel 1, an upper guide pipe 2, an upper sealing sheet 3, a lower sealing sheet 4, a lower guide pipe 5, a full-plane flange 6 and a corresponding fastener, and is characterized in that:

the floating roof storage tank sampling device is arranged on a floating roof 7 in the storage tank and right below a tank roof sampling hole.

The lower guide pipe 5 is communicated with the lower space of the floating roof through an upper opening of the floating roof.

Go up 2 tops of stand pipe and be connected with sample funnel 1, after the welding is accomplished, should polish inner wall welded joint smooth.

Two full-plane flanges 6 are welded to the upper guide pipe 2 and the lower guide pipe 5, respectively.

The upper sealing piece 3 and the lower sealing piece 4 are stacked in sequence and fixed between the full-plane flanges 6 through fasteners.

As shown in fig. 3 and 4, n sets of cross cuts are performed on the upper seal fin 3 and the lower seal fin 4 during processing, and the cutting length is 0.8 to 0.9 times the inner diameter of the guide pipe.

The upper sealing sheet 3 and the lower sealing sheet 4 are made of Teflon or rubber, have good rebound property and are compatible with a storage medium, and the thickness is 1.6 mm-3.2 mm.

As shown in fig. 2, the upper seal panel 3 and the lower seal panel 4 are stacked in this order, and the overall cutting angle is 360/8n degrees. Wherein n is defined by the following criteria: the inner diameter of the guide pipe is more than or equal to 100 and less than or equal to 200, and n is 2; the inner diameter of the guide pipe is more than 200 and less than or equal to 350, and n is 3.

The height of the sealing surface of the full-plane flange 6 from the surface of the floating roof is determined by calculation according to the buoyancy of the floating roof, and the height of the sealing surface of the flange from the liquid level is ensured to be between 50mm and 100 mm.

The above-mentioned specific embodiments further explain in detail the technical problems and technical solutions of the present invention. It should be understood that the above description is only exemplary of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an interior floating roof storage tank sampling device which characterized by: including sample funnel (1), go up stand pipe (2), upper gasket (3), lower floor gasket (4), stand pipe (5) down, full plane flange (6) and corresponding fastener, wherein it is connected with sample funnel (1) to go up stand pipe (2) top, stand pipe (5) and storage tank internal floating roof lower part space UNICOM down, the welding has two full plane flanges (6) between the stand pipe from top to bottom, upper gasket (3) and lower floor gasket (4) stack the back according to the preface and are fixed in on full plane flange (6) through the fastener.

2. The internal floating roof tank sampling device of claim 1, wherein: the upper sealing piece (3) and the lower sealing piece (4) are all-plane gaskets, n groups of cross cutting are carried out at the center of each gasket to form a central cut, the cutting length is 0.8-0.9 times of the inner diameter of the guide pipe, and the cutting angles are staggered by 360/8n degrees; wherein n is defined by the following criteria: the inner diameter of the guide pipe is more than or equal to 100 and less than or equal to 200, and n is 2; the inner diameter of the guide pipe is more than 200 and less than or equal to 350, and n is 3.

3. The internal floating roof tank sampling device of claim 1, wherein: the height of the sealing surface of the full-plane flange (6) from the liquid level is between 50mm and 100 mm.

4. The internal floating roof tank sampling device of claim 1, wherein: the inner floating roof storage tank sampling device is arranged on a floating roof (7) in the storage tank and is communicated with the lower space of the inner floating roof through a lower guide pipe (5).

5. The internal floating roof tank sampling device of claim 1, wherein: when the sampler passed upper and lower gasket, upper and lower gasket opened along central incision, and when the sampler left upper and lower gasket, upper and lower gasket central incision realized automatic sealing with self elasticity recovery plane, effectively avoided oil gas evaporation loss and environmental pollution.

6. The internal floating roof tank sampling device of claim 1, wherein: the upper sealing sheet (3) and the lower sealing sheet (4) are made of Teflon materials or rubber materials.