Tail sealing grease for shield tunneller

A shield tail seal and sealing grease technology, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of staggering cost and high cost of shield tail seal grease, and achieve low cost, good pumping effect and strong sealing performance Effect

Inactive Publication Date: 2008-03-12
刘延鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing shield tail sealing grease has the problem of high cost and surprising cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First, after fully stirring and kneading 180kg base oil, 85kg604 tackifier, 20kg3# lithium pole grease, 20kg plant fiber (animal fiber), 50kg tackifying resin, 10kg rust inhibitor, and 15kg antioxidant at room temperature, 620 kg of waterproof sealing material is put into a kneader and fully stirred, and kneaded for 1-2 hours to obtain the weight of 1000 kg of shield tail sealing grease.

Embodiment 2

[0031] First, mix 100kg of second-line oil, 30kg of silicone oil, and 50kg of transformer oil, add 100kg of 604 tackifier, 20kg of 3# lithium pole grease, stir and dilute, add 20kg of plant fiber (short lint), and add C 5 / C 9 30kg of mixed resin, 5kg of terpene resin, and 15kg of rosin resin were added into the materials while stirring and kneading. Then add 365kg of active light calcium carbonate and 240kg of barite powder for stirring and kneading, and finally add 15kg of antioxidant and 10kg of antirust agent, and knead for 1-2 hours to obtain the shield tail sealing grease.

Embodiment 3

[0033] 135kg machine oil (46#), 10kg silicone oil, 15kg, 20kg diesel engine oil, 80kg616 tackifier, 20kg short lint fiber were mixed and stirred for half an hour, 20kg3# lithium base grease, 50kg tackifying resin were added, (wherein 10kg ancient Malone resin, 5kg rosin resin, 35kgC 5 Petroleum resin), 20kg polyisobutylene, 15kg antioxidant, 10kg antirust agent stirred for about half an hour, finally dropped into 242kg barite powder, 368kg light active calcium carbonate, fully stirred and kneaded for 1-2 hours to obtain the shield tail Seal grease.

[0034] Embodiment 1-3 product quality detection index of the present invention is as follows:

[0035] serial number

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PUM

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Abstract

The invention discloses a sealing grease for a shield tail of a shield tunneller, which comprises by weight the following components: basic oil 17.5-19 portions, thickener 8-15 portions, waterproof sealing material 58-65 portions, lubricant 1.5-3 portions, antioxidant 1-2 portions, anti-rust agent 0.5-1.5 portions, and tackifier 4-6 portions. The invention is of low cost, strong adhesion, good sealing performance, good pumping effect, environmental friendliness, good lubrication and steadiness, is resistant to aging and oxidation, free from separation and dry contracting during the quality warranty period of the product.

Description

technical field [0001] The invention relates to shield tail sealing grease of a shield boring machine. Background technique [0002] At present, in order to effectively use the underground space in our country, the development of the subway industry is advancing by leaps and bounds, and the construction speed of tunnel shield tunneling is increasing day by day. During the propulsion process of the shield, the friction between the shield tail and the outer wall of the segment will affect the propulsion of the shield and damage the shield tail device, and the infiltration of mud in the soil layer will also affect the normal operation of the shield and increase the difficulty of construction. The above problems can be better solved by using shield tail sealing grease. [0003] Shield tail sealing grease is a kind of sealing material injected into the wire brush shield tail of the tunnel shield boring machine in the shield tunneling method of underground engineering. It mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M143/02C10M143/04C10M159/00C10M125/00C10M133/00C10N40/34
Inventor 刘延鹏
Owner 刘延鹏
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