What does "hell's bells" refer to?

The Bible makes no mention of there being bells in Hell.

Wikipedia claims https://en.wikipedia.org/wiki/The_Bells_of_Hell_Go_Ting-a-ling-a-ling

"The Bells of Hell Go Ting-a-ling-a-ling" is a British airmen's song from World War I, which was created around 1911.[1]

It is apparently a parody of another popular song of the time entitled "She Only Answered 'Ting-a-ling-a-ling'"[2]

However, a more reliable source seems to be

"THE LOGBOOK OF THE NAVAL AIRCRAFT ASOCIATION OF PHILADELPHIA" by John McClure - 1918 - ‎Snippet view, (Google books) Found inside – Page 88

In the accompanying lines , dedicated to the Germans , allusion is made to the sing of the machinegun bullets , characterized as the " Bells of Hell." The Bells of Hell go ting - a - ling - a - ling For you , but not for me . For me the angels sing - a ...

[1]This seems inaccurate, or at least confusing (the English is poor), as the First World War did not break out until 1914, and the Royal Flying Corps (A section of the British Army) was not founded until 1912. I can only assume that it is a reference soldiers when training in the use of machine guns or when under machine gun fire.

[2]TING-A-LING-TING-TAY. Copyright, 1892, by T. B. Harms & Co. Words and Music by Harry Dacre. (http://www.traditionalmusic.co.uk/songster/37-ting-a-ling-ting-tay.htm)

Historically, many pre-literate (or really pre-industrial) societies had entrances to access subterranean sulfur mines (commonly associated with the literal Christian Biblical Hell). It is a common safety measure to place a sound making device, like wind chimes or small bells, at these entrances to warn miners that noxious gas was escaping and therefore it was unsafe to enter. In our modern industrialized world, such entrances are hardly in evidence - they are controlled by much more scientific safety devices, plus modern sulfur production is almost entirely through secondary petroleum byproduct processing rather than the unsafe direct mining.

And there is very slight semantic shift from 'a warning of noxious gas' to 'a general exclamation of irritation'. Other languages have similar phrases: Russian 'адские бубенцы', Mandarin '地狱的钟声' and Swahili 'kengele za kuzimu' (notice the alliteration in Chinese and Swahili).

It's only a coincidence that 'hell' (cognate to German 'Hölle') and 'bell' (MLG belle) rhyme in English. By inspecting their etymologies you can see that they came from very different sounding roots and only by the Great Vowel Shift did they converge.

So in sum, it refers to a common pre-literate practice of noise makers at the head of sulfur mines.

There is no meaning in Hell's Bells, it's just an alliterative exclamation to express anger, irritation, surprise.

The OED has the first recorded use as being in 1847: "‘H—ll's bells!’ exclaims the musician.", and shows that even the utterance of the word Hell was proscribed.