In order to solve the tedious problem of liquid sampling in storage tank, our company according to the provisions of national standards GB/T4756-1998 《Manual sampling method for oil》, combined with the many years of practical experience in the production and develop HCYG type series of tank products, praised by users and tank sampler has following advantages:
1.The accuracy of the oil sample is high
2.Simple and convenient operation: sampling workers do not need to be on the bank, this will not only reduce the labor intensity of the workers and ensure the safety, especially in bad weather conditions, but also show their superiority
3.High degree of automation, save the sampling time, improve the working efficiency
4.Operation box integrated design, easy operation, installation, maintenance
5.Sampling without residue, the mouth of the sampling without leak
6.Benzene and other toxic medium are sampled by the sealed glass bottle, to ensure that the health and security of the workers.
2. Scope of application
Applicable medium range: gasoline, kerosene, naphtha, diesel oil, crude oil, oil, asphalt, chemical raw materials etc.
Using the form: in the relative point and fixed point sampling, in the relative point or fixed point of mixed liquid sample.
Environmental temperature: -15-90℃ (according to concrete conditions add the heat preservation and heat tracing)
The way the sample flows into the sampling bottle: through the liquid level high pressure or purge
The way of the cleaning system: pneumatic pump (with 0.3MPa ~ 0.8MPa gas source), manual pump
3. Model and selection
The way of the cleaning system: pneumatic Q, manual S
the structure feature of the servo unit of the sampler under tank
Type of the sampler
（一）the sampler under tank sampling the Uniform medium :
1.HCYG-K series： For inner floating roof tank, external floating roof tank
2.HCYG-X series： Used in vault tank, inner floating roof tank, external floating roof tank;
3.HCYG-H series: for Vault tank without mixing equipment, inner floating roof tank, external floating roof tank
4.HCYG-I series：specially used for the short type vault tank without mixing equipment
5.HCYG-G series： specially used for the vault tank witht mixing equipment and inner floating roof tank, in the full conditions, sample from the top, upper, middle, lower, bottom, export.
Above these types of the sampler are applicable to uniform liquid sampling, the sampling servo mechanism is arranged according to the principle of GB/T4756-1998 the oil liquid manual sampling:
（1）、samples from the upper , samples from the middle and the lower
（2）、samples from the upper , samples from the middle, samples from the liquid surface from the outlet
samples from the upper：1/6 under the Liquid level
samples from the middle：1/2 under the Liquid level
samples from the lower: samples from the liquid surface from the outlet - 5/6 under the Liquid level(the lowest point of oil output pipe )
Can also increase samples from the bottom (From the bottom of the tank 150-300mm), samples from the top (under the liquid level 150-300mm)
4. The principle of operation
The arm support rod bottom of the sampler slipkno on the bearing shaft, floating ball hanging in the top of the pole. Sampling points from the upper and sampling points from the middle , sampling points from the lower according to the following fixed position in the single support bar 5 / 6, 3 / 6, 1 / 6, When the floating ball with the liquid level rise and fall, according to the geometry principle of the triangle geometric similarity, The position of a high on the Sampling points from the upper a, sampling points from the middle , sampling points from the lower relative the position of the floating ball has always been to maintain 5 / 6 and 1 / 2, 1 / 6. And the position of the high of the floating ball always equal to the high level of oil, thus sampler can strictly in accordance with the provisions of the sampling standards automatically obtain samples.
5. Structural Forms
1、HCYG-K Bottom Sampler (articulating boom lift)
Principle of work and feature
1) Inner components of the sampler is of light weight, which generate pulling force of less than 20kg.
Horizontal Force of the device is less than 10kg, which avoid overturn caused by traditional articulating boom lift sampler.
2) Supporting rod is ruggedized and bending caused by gravity is avoided, thus sampling point will be more accurate.
3) Three sampling points of the top, the middle and the bottom will rise and fall in accordance with lquid level, which ensures that the proportion of 5/6、1/2、1/6 are maintained. Accuracy rating is higher than traditional devices.
4) Diameter of sample tube can be adjusted to DN15,
and all mobiles liquid is applicable.
5) Applicable when sampling height ranges from 2m-4m. Sampling error accords WH/T3414-1999, and is under 5%.
2、HCYG-H Bottom Sampler (vertical)
NOTE: hereinafter be changed into mode Ⅰ
Principle of work and feature
Top inlet, middle inlet and bottom inlet of sampler pipes float up and down in accordance with floating ball or floating plate.
Proportion of 5/6, 1/2, ad 1/6 will be kept.
And regulation of "artificial sampling of Liquid Petroleum Products" is conformed
and accuracy of sampling ensured.
1) The biggest gravity force of sampler toward floating roof is less than 12k,
which is less than 10% of traditional samplers.
Horizontal Force of the device is less than 0.5kg, which is less than 1% of traditional articulating boom lift sampler. Overturn and knocking off will be avoided.
2) Three sampling points of the top, the middle and the bottom will rise and fall in accordance with liquid level, which ensures that the proportion of 5/6、1/2、1/6 are maintained.
Accuracy rating is higher than traditional devices.
3) Occupation of the device is critically small and there is no potential danger to other components in tanks.
Accuracy of the device will not be influenced by other equipment inside oil tank.
4) Simple mechanism, easy installation and maintenance.
6. Installation and Notices
1, Installation Instruction
A, when pneumatic sampling is applied, then a compressed-airline shall be installed near the flange where sampler is to installed. Pressure of compressed air shall greater than 0.3Mpa, and Diameter of the line greater than DN15.
B, when heat tracing is needed, then a steam line of DN15 and drain valve shall be installed as well.