Abstract: An inner and outer tank connection device for a cryogenic storage tank includes a suspension belt; a first connection assembly for connecting the outer tank, wherein the first connection assembly includes a first connection seat and a first connection member, and the first connection seat is configured for connecting the outer tank and the first connection seat is provided with a first limiting seat, the first connection member is rotatably connected to one end of the suspension belt, and the first connection member is provided with a first limiting portion, and the first limiting portion fits with the first limiting seat to limit the first connection member from twisting on the first connection seat with the suspension belt as a rotation axis; and a second connection assembly for connecting the inner tank, wherein the second connection assembly is rotatably connected to another end of the suspension belt.

Abstract: A cryogenic storage tank includes an inner tank, a shell and two support assemblies supported between the inner tank and the shell. The two support assemblies are provided on two opposite ends of the inner tank along the axis of the inner tank. The support assemblies all include a plurality of support members, and the plurality of support members of each support assembly are symmetrically provided with respect to the vertical centre axis plane of the inner tank, and each of the upper side and the lower side of the horizontal centre axis plane of the inner tank is provided with support members; each support member includes an inner end connected to the outer end of the inner tank and an outer end connected to the inner wall of the shell, and the support member is located in a different plane from the axis of the inner tank.

Abstract: An integrated load cell and inclinometer includes an outer shell including a u-shaped structure configured to receive a polished rod; a load sensor configured output a load signal based on a load experienced by the load sensor; a position sensor configured to output a position signal based on a position experienced by the position sensor; a load and position signal processor configured to receive and process the load signal from the load sensor and to output load signal data representative of the load experienced by the load sensor, and receive and process the position signal from the position sensor and to output position signal data representative of the inclination of the walking beam or the position of the polished rod; a solar battery configured to provide power to the integrated load cell and inclinometer; and a transmitter configured to transmit the load signal data and position signal data.

Abstract: A load cell for transmitting load data of a polished rod in a rod pump system includes an outer shell having a u-shaped structure with two protrusions, the u-shaped structure configured to receive the polished rod, and the outer shell configured to be positioned between a rod clamp and a clamping bar of the rod pump system. Internal to the outer shell is a load sensor, a load signal processor, a modulator, a battery, and a charger, whereby the load cell measures a load on the polished rod and wirelessly transmits load signal data via a wireless transmitter internal to the outer shell but with an antenna that protrudes from the outer shell. Also internal to the outer shell is a battery which is charged by an external solar panel via the charger. The battery, charger, and solar panel provide power to the load cell.

Abstract: The invention relates to an intelligent online closed-loop balance adjusting system for a pumping unit. The system comprises a connecting rod, balance weights, a transmission device, a balance weight displacement adjusting motor and a control device used for driving the motor to adjust and control the weight displacement. The transmission device and the balance weight displacement adjusting motor are arranged above a walking beam. The balance weight displacement adjusting motor is connected with one end of the connecting rod through the transmission device, and the other end of the connecting rod is connected with balance weights. One end of the walking beam away from the horse-head is connected with the middle part of the connecting rod. The invention can realize automatic weight adjustment without shutting the machine down, and the balance weights can be adjusted with the precision of ±10%.

Abstract: The specification describes a method and arrangements for operating fluidized bed combustors in particular boilers. In the described method and arrangements thermal energy carried away from the combustor by the flue-gas emitted therefrom is recuperated by passing the flue-gas through a scrubber in which it is scrubbed with water. The scrubbing water subsequently being used to pre-heat fluidizing gas fed to the fluidized bed in the combustor and/or working fluid fed to the boiler. Additional description is given of using a heat exchanger through which both flue-gases from the combustor and the working fluid fed to the combustor are fed such that the heat carried away from the combustor in the flue-gases is given directly to the working fluid fed to the combustor. In the described method and arrangements the fluidizing gas may be charged with water vapor and/or steam easing control of the bed.

Abstract: The specification describes a method and means for controlling operation of a fluidized bed combustion apparatus. In the proposals embodied in the invention the supply of combustion air fed to the fluidized bed is augmented by inert gas (preferably waste gas taken from a low temperature outlet of the apparatus) and the proportion of inert gas used to augment the combustion supporting air is variable in dependence upon the temperature of the fluidized bed in the apparatus and/or the thermal demand placed upon the apparatus. In described embodiments of means enabling the invention to be effected arrangements are described including an induced draft fan, coupled to the outlet for waste gas of the apparatus, for feeding waste gas to a mixer and the use of a two input mixer fan coupled to both atmosphere and a waste gas supply line connected to a waste gas outlet.