离线部署问题

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from modelscope.outputs import OutputKeys
from modelscope.pipelines import pipeline
from modelscope.utils.constant import Tasks

text = '待合成文本'
model_id = 'damo/speech_sambert-hifigan_tts_zh-cn_16k'
sambert_hifigan_tts = pipeline(task=Tasks.text_to_speech, model=model_id)
output = sambert_hifigan_tts(input=text, voice='zhitian_emo')
wav = output[OutputKeys.OUTPUT_WAV]
with open('output.wav', 'wb') as f:
f.write(wav)
请问下载的模型路径怎么使用？这段代码在断网情况下不能使用，请问怎么才可以离线使用模型，本地部署