Praise be to Allah.
A divorce does not happen simply by intention, because the Prophet (peace and blessings of Allaah be upon him) said: “Allaah has forgiven my ummah for what crosses their minds, so long as they do not act upon it or speak of it.” (Narrated by al-Bukhaari, 5269; Muslim, 127)
Rather talaaq (divorce) happens in one of two ways: either by speaking or by writing. (Fataawa al-Talaaq by Ibn Baaz, 53-54)
On this basis, talaaq did not take place on the first and second occasions, because the husband did not speak or write the words of talaaq .
As for the third occasion, if he said, as stated in the question, “that he would divorce her if these conditions were not met”, this too is not counted as a talaaq, rather it is a threat of talaaq. Whether the conditions were met or not, this does not mean that a talaaq has taken place, because of threat of talaaq does not mean that a talaaq has actually taken place. (Fataawa al-Talaaq by Ibn Baaz, 56).
And Allaah knows best. May Allaah send blessings and peace upon our Prophet Muhammad and upon all his family and companions.