公开(公告)号：US20210356247A1

公开(公告)日：2021-11-18

申请号：US16627656

申请日：2019-12-12

Applicant: HANWHA CORPORATION

Inventor： Ki Won Hwang ,  Sung Ho Lee

IPC: F42D1/055 ,  G08C17/02

Abstract: Provided is a blasting system including a first detonator and a second detonator and a user terminal. The user terminal performs wireless communications with the first detonator and wired communications with the second detonator. Each of the first detonator and the second detonator includes an electric detonator storing detonator information, in which the electric detonator ignites an explosive in response to a blasting command, a connector connecting the electric detonator to the user terminal via a wireless or wired communication means, and a wiring portion connecting the electric detonator and the connector.

公开(公告)号：US20210333076A1

公开(公告)日：2021-10-28

申请号：US16627486

申请日：2019-12-16

Applicant: HANWHA CORPORATION

Inventor： Se Ho Kim ,  Jeong Ho Choi

IPC: F42D1/05 ,  F42B3/12

Abstract: A communication system includes a transmitter and a receiver connected through a cable. The transmitter transmits a first signal to the receiver using a voltage applied to the cable. A control circuit of the receiver receives the first signal and transmitting a second signal to the transmitter using a current flowing to the cable. A charging circuit of the receiver performs a charging operation by receiving the voltage through the cable and supplying a driving voltage to the control circuit. The control circuit includes a filter generating a second voltage by extracting a voltage within a reference range from a peak voltage of a first voltage and a voltage meter extracting the first signal by measuring the second voltage.

公开(公告)号：US11054235B2

公开(公告)日：2021-07-06

申请号：US16627026

申请日：2017-06-28

Applicant: HANWHA CORPORATION

Inventor： Eung So Lee ,  Ki Chul Park ,  Se Hun Kim ,  In Kim

IPC: F42D1/04 ,  C06C5/06 ,  C06C7/00 ,  C06B25/04 ,  C06B41/02 ,  C06B37/00

Abstract: The present disclosure relates to a trunkline delay detonator and a blast-triggering device using the same. In the blast-triggering device, a trunkline delay detonator is inserted into a connector in such a manner that a plurality of shock tubes connected to a detonator for initiating an explosive are interposed between the connector and the trunkline delay detonator, so that an explosion signal is applied to the shock tubes by detonation of the trunkline delay detonator. In the blasting detonator, close contact between the outer surface of the trunkline delay detonator and the shock tubes is improved, whereby energy lost in an explosion is reduced and an explosion signal is stably and uniformly applied to the shock tubes by using powder which has a weak explosive power and is relatively insensitive compared to conventional powders.

公开(公告)号：US20040000347A1

公开(公告)日：2004-01-01

申请号：US10371495

申请日：2003-02-20

Applicant: Agency for Defense Development ,  Hanwha Corporation

Inventor： Weon Gyu Shin ,  Hyun Young Choi ,  Hyo Pil Shin ,  Eui Joon Moon ,  Jong Yeol Kim

IPC: F15B013/04

CPC classification number: F15B13/0402 ,  F16K11/07 ,  Y10T137/8671

Abstract: Disclosed is a flow force compensating spool valve having a flow force compensating protrusion ring at a supply channel of a sleeve on an outer circumference portion of a spool rod, and a hydraulic valve, a pneumatic valve, a three-way valve, and a four-way valve using the spool valve, in which the flow force can be compensated by a simple structure change of the spool without changing a structure of the sleeve.

Abstract translation: 本发明公开了一种流量补偿滑阀，在滑阀的外圆周部分的套筒的供给通道上具有流动力补偿突出环，液压阀，气动阀，三通阀和四通阀 使用滑阀的流道阀，其中可以通过简单的阀芯结构改变来补偿流量，而不改变套筒的结构。