Blog

23

2021

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04

Two car gas drainer delivery......

Two cars full of gas drainers, ready for delivery...... welcome attention to the wuhan joint special valve science and technology limited company's official website.

23

2021

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04

Analysis of Influencing Factors of Valve Sealing Structure

The sealing degree of the valve is determined by the combination of its type and nature. The sealing degree of the valve is also directly related to the material, equipment, tooling and process of the valve. If there is a quality problem in any link, it will inevitably affect the application quality of the valve. Combined with scientific design standards, the sealing structure should be designed as a cone or a sphere, but compared with the plane sealing structure, this sealing structure will have many adverse effects, the sealing surface is prone to scratches, and there are many difficulties in maintenance and processing, which is also relatively easy to increase production costs, and market sales will also have a great impact. The valve sealing surface is designed to be conical or spherical, which will be affected by adverse factors. The flat sealing design is adopted to change the sealing surface of the valve stem and valve cover from the original conical shape to the flat contact pattern. This method is relatively small, the precision of the device and equipment can be guaranteed, and the processing is relatively easy. The length of time the valve is used and the number of valve switches is proportional, and maintenance is relatively easy. welcome attention to the wuhan joint special valve science and technology limited company's official website.

23

2021

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04

Application Points of Valve Sealing Structure

The application of valve sealing structure, we should pay attention to strengthen attention from several aspects, can not let the valve work in a relatively small opening condition, the start of the valve needle is relatively slow. Therefore, when the opening is small, the throttling interval is relatively small, and it is necessary to appropriately expand the pitch of the locking mechanism, increase the opening speed and lift of the valve needle, and the working opening will be further increased, which can effectively extend the valve Use cycle. The practical application of the valve sealing structure, the medium temperature for the use of the valve cycle is relatively easy to have an impact, high medium temperature is relatively easy to shorten the service life of the valve, in the specific use of the process, it is necessary to try not to apply the valve to work under high temperature medium, the pressure relief valve to increase the cooling device, which can effectively extend the use of the valve cycle. To avoid impurities into it, this will affect the service life of the needle valve. In addition, the need for regular cleaning and filtration of high-pressure media, plus liquid need to use the filter to implement filtration, the use of more times to appropriately shorten the use of the cycle, do a good job in the cleaning of the tank, etc., only from these aspects have been fully valued, in order to protect the application quality of the valve sealing structure. Welcome to the official website of Wuhan Xiete Valve Technology Co., Ltd.

23

2021

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04

How to purchase valves

        我们知道， 阀门采购要经过诸多环节，但确保质量的关键环节主要在于采购部门提出采购技术要求，这是重要的环节。随着国内工程项目的建设，阀门制造单位也将通过不懈的努力，发展壮大，建设单位和制造单位之间仍会存在许多的问题和矛盾，亟需共同研究、努力，在解决问题和矛盾中共同前行。 　     一、采购模式 　　（1）最低价中标模式。无论是国内的建设单位还是国外的建设单位，都想以最小的代价得到最优的产品，这就造成阀门制造单位采取不惜亏本也要确保中标的做法与策略。但是，在阀门招标过程中，阀门制造单位采用这种“亏本”投标的方式，多是通过“以次充好”降低成本，进而获取利润，这样做的代价造成了企业诚信的丢失，也往往成了“一锤子买卖”。很多阀门制造单位感到非常委屈，经常抱怨“游戏规则”制定不合理性，在此种模式下，如此低廉的价格，甚至连产品成本都不够，根本不可能得到招标书中所要求的那种优质产品。对于这种说法，这种抱怨，可以理解，可以同情，但不可以完全认同。当前，国内很多石油化工装置和煤化工装置关键部位的关键阀门虽然是普通阀门，但却开始倾向于采用进口阀门，而且，这种倾向呈“上升”和“扩大”的趋势，这不能不说是国内阀门制造单位的一种悲哀，也势必会将一些阀门制造单位逼上“绝路”。其实，这又何尝不是国内企业“自相残杀”的恶果？当然，从另一个角度来讲，优胜劣汰这一亘古不变的原则也必将使另一些守得住诚信、把得住质量的阀门制造单位长盛不衰。 　　（2）“按质论价”中标模式探讨。对于阀门“按质论价”模式的采购策略，通常先预付很少一部分预付款，按照阀门的使用寿命和质量进行考核，根据考核结果逐年将尾款付清，而尾款占整个订单总价格的50%以上，这种模式适合资金实力雄厚的阀门制造单位，而对于国内绝大多数中小型阀门制造单位来说，这种模式严重影响了资金回流速率和资金链的安全性，也是其不能接受的主要原因之一。 　　（3）“框架采购”模式。“框架采购”模式或许是所有阀门制造单位最希望采用的方式，但是这种采购模式几乎不为建设单位所采用，原因很简单，工业装置所需要的绝大多数阀门不属于“高、精、尖”种类，只有某些装置的关键部位需要“高、精、尖”的阀门，并且数量有限，所以建设单位一般不会使用“框架采购”的模式进行采购。 　　二、阀门质量要求问题 　　不管采用哪种采购模式，建设单位、阀门制造单位有一个共同的愿望，那就是“利益最大化”。作为建设单位，总是希望以最小的代价获得最适合的产品，也就是性价比最高的产品。在招标过程中，所有阀门都会被提出成分要求、结构规格要求、质检要求和运输要求等，这些要求有时候是比较高的，也貌似非常严苛。 　　阀门采购时，需方应提出详细的环境及阀门的技术要求，供方按照需方要求在阀门生产的几个主要环节，认真把关，做出用户满意的阀门产品。需方按照采购技术条件对供方的阀门进行严格的质量验收控制，在采购的主要环节与供方进行及时沟通，以便获得性能可靠稳定的阀门产品，满足使用要求。        欢迎大家关注武汉协特阀门官网。

05

2021

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04

Simple Description of Gas Drainer

The function of the gas drain is to collect and discharge the condensed water in the gas pipeline. The following problems exist in the use of the ordinary gas drain: When the production conditions change and the gas pressure rises a lot instantly, the gas drain is easy to be broken down, resulting in a large amount of gas leakage, causing serious accidents. When the gas pressure fluctuates frequently, the gas drain cannot automatically replenish water. If the water is not replenished manually in time, it will lead to gas leakage, which is easy to cause fire or gas poisoning. In the low temperature environment in the north, the drain is prone to freezing when working, if the equipment cannot work normally, it is necessary to carry out effective heat preservation for the drain or take electric heat tracing technical measures. Designed with anti-breakdown device, when the gas pressure exceeds the usual maximum value, the gas drain can still work reliably, effectively prevent the gas leakage, put an end to malignant accidents. The gas drainer can self-replenish water at any time according to the fluctuation and change of gas pressure during operation, that is, when the pressure fluctuation occurs in the gas pressure on site, the gas drainer can automatically replenish water dynamically to the drainer, and will not cause gas leakage accident due to the lack of water in the gas drainer. When the gas drain is used in a colder environment, the gas drain has a fully enclosed heat preservation measures (the user can also choose the electric heating gas drain according to the site situation), so that the gas drain can work reliably and continuously for a long time without freezing. The gas drain has a gas emptying device, which can completely empty the air inside the drain when the gas drain is added to prevent the air resistance inside the drain. The gas drain has a sewage outlet. When the gas drain works in the case of dirty gas, the gas drain can be treated according to the usage to ensure the reliable working performance of the gas drain.

01

2021

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04

A batch of scrapers have been shipped

We are full of energy, and another batch of scrapers have been shipped.

22

2021

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03

Discussion on Knowledge of No Leakage Gas Drainer

Leakage-free gas drainer is aimed at the major defect that the currently used gas drainer is easy to leak gas, and provides an anti-breakdown leakage-free gas drainer, which can realize zero gas leakage in the use state regardless of gas pressure fluctuation or low water seal (severe water shortage). Leakage-free gas drainer is composed of ordinary drainer and anti-leakage device. It uses the height of water seal to overcome the gas pressure, thus sealing the gas. When the effective water level of the drainer is abnormally lowered due to pressure fluctuation of the gas pipe network or other reasons, the gas breaks through the water seal, and the anti-leakage device acts to close the overflow port to prevent gas leakage and prevent accidents. Working principle: The main purpose is to connect the anti-breakdown and leak-free gas drainer into the gas pipeline (the lowest part of the pipeline). The condensed water in the gas pipeline enters the high-pressure chamber of the drainer through the drain pipe, and then enters the low-pressure chamber of the drainer through the connecting pipe of the high-pressure chamber on the partition plate to collect the condensed water and automatically discharge the condensed water in the gas pipeline through the water seal to ensure the normal operation of the equipment. When the effective water level of the drainer is abnormally low due to pressure fluctuation of the gas pipe network or other reasons, it is broken down by gas. Under the action of gas impact, the anti-leakage device is triggered, the overflow port is closed, the gas leakage is prevented, and the normal operation of the equipment is ensured. In general, when the height of the water seal is greater than 2000mm, a double-chamber or three-chamber structure should be adopted to make the overflow outlet below 2000mm, which is convenient for observing the working condition of the drain.

16

2021

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03

Another batch of gas drainers has been delivered.

After everyone's joint efforts, another car was filled and ready for delivery......

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