�îaƷ��x��ָ��

��r�g��2009-07-16 18:13 ��Դ�� : ��x��2561

һ��f�OӋԺ��OӋ�b��O��r��Ҫ�_��õ��;��ܲ��x��,��@�N�x��ȵÏ��x��õķN��ʽ�_ʼ,��õķNǳ��࣬��(j��)��ͬ�Ĺ��r�x��ǧ��f�e,��ô��ʲôԭ�t��x��,��(j��)��ʲô��

һ,��˽��x��ԭ�t

1,��ʹ��x�õ��ʽ��ܷ��b��P��,��,��ضȡ��g��,��̵ȹ�ˇ��(sh��)��Ҫ��,��

3,��Cе��ɿ��Ը�,��͡��С,��

4,��Ҫ�C�Ͽ��]��O��M��\�D�M,��S��M�͹��M�Ŀ��ɱ��,��

5,��x�ıþ��D�ٸߡ��w�eС,��p,��Ч�ʸߡ��,��Y��,��ݔҺ�o�}�ӡ��ƽ��(w��n),��ײ��;S�޷��c,��˳��r�⣬��M��x��x�ıã�

a,��Ӌ��Ҫ��r,��x��Ӌ��ã��ӱ�,��ܛ�ܱ�

b,��P��Ҫ��ܸߣ��С�ҟo��mС��ߓP��x�ıÿ��x�Õr,��x��ͱ�,��ã��gҪ�󲻸ߕrҲ��x��u��,��~Ƭ��

c,��P�̺ܵ�,��ܴ�r,��x��S��úͻ��

d��|ճ��^�󣨴��650~1000mm2/s��r,��ɿ��]�x��D�ӱû��ͱã��X݆��,��ݗU�ã�

e��|��75%,��^С��ճ��С��37.4mm2/s�r��x��u��

f,��l��ò��Ĉ��,��x�þ��ܵıã��ܛ�ܱ�,��ʽ��u��,��Ӹ�Ĥ��

��֪��x�͵Ļ��(j��)

��x��(j��),��(j��)��ˇ��,��o��ˮҪ�󣬏��傀��Կ��],��Һ�wݔ��,��b�ÓP�̡�Һ�w��|��·��Լ��\�D�l��,��

1,��x�õ��Ҫ��ܔ�(sh��)��(j��)֮һ��ֱ��Pϵ��b�õĵ��a��ݔ��,��OӋԺ��ˇ�OӋ��,��С��N��,��x��Õr,��(j��)��,��ڛ]��r,��ͨ��ȡ��1.1��,��

2,��b��ϵ�y(t��ng)��ēP��x�õ��һ��Ҫ��ܔ�(sh��)��(j��)��һ��Ҫ�÷Ŵ�5%—10%��P�́��x��,��

3,��Һ�w��|��Һ�w��|��Q,��|,��W��|��|��|�Мض�c�ܶ�d,��ճ��u,��|�й��w�w��ֱ��͚��w�ĺ��ȣ��@�漰��ϵ�y(t��ng)�ēP��,��Ч��g��Ӌ��ͺ��m�õ��ͣ��W��|,��ҪָҺ�w��|�Ļ��W��g�ԺͶ��ԣ��x�ñò��Ϻ��x��һ�N�S��ʽ��Ҫ��(j��),��

4,��b��ϵ�y(t��ng)�Ĺ�·��×l��ָ��Һ�߶��Һ��x��Һ��Һ��,��ų��Һ��һЩ��(sh��)��(j��)�͹ܵ�Ҏ(gu��)��L��,��ϡ��ܼ�Ҏ(gu��)��,��(sh��)��,��Ա��M��ϵ��P��Ӌ��g��У�ˡ�

5,��l��ă��ݺܶ�,��Һ�w�Ĳ��T��P,��ȉ��PS��^��ų��PZ,��θ߶�,��h(hu��n)��ضȲ��g϶��߀��B�m(x��)�ġ��õ�λ��ǹ̶��߀�ǿ��Ƶ�,��

��,��x�õľ��w��

��(j��)��x��ԭ�t��x�ͻ��l��w��£�

1,��(j��)�b�õĲ��,��Ηl��ˮλ�l��,��\�D�l��,��_��x��Pʽ��ʽ��ʽ��ܵ�ʽ,��ˮʽ,��Һ��ʽ��o��ʽ,��ʽ,��X݆ʽ�ȣ��ıá�

2,��(j��)Һ�w��|��|,��_��ˮ�ã��ˮ��߀��ͱ�,��û��͸��g�û��s�|��,��߲��ßo��á��b�ڱ�ը�^(q��)��ı�,��(j��)��ը�^(q��)��ȼ�,��ķ��늄әC��

3,��(j��)��С,��_��x��߀��p��ã��(j��)�P�̸ߵ�,��x�μ��߀�Ƕ༉�ã��D�ٱ�߀�ǵ��D�ٱã��{�ã�,��༉��Ч�ʱȆμ��õ�,��x�μ��úͶ༉��ͬ�Ӷ��Õr��x�Æμ��,��

4,��_��õľ��w��̖,��_��x��ʲôϵ�еıú󣬾Ϳɰ��,��ڛ]��r,��ͨ��ȡ��1.1��,��ȡ�Ŵ�5%—10%��ēP��@�ɂ��ܵ��Ҫ��(sh��),��V�D��ϵ��ϴ_��w��̖��£�
��
��ñ��,��ڙM��ҵ��ֵ,��ڿv��ҵ��P��ֵ��ă�ֵ�քe��Ϻ��ˮƽ��,��ɾ��c��,��tԓ�þ��Ҫ�x�ıã��@�N��rһ��,��ͨ��ЃɷN��r��
��
��һ�N��c��Ϸ�,��@�f��M��Ҫ�󣬵��P�̲��,��˕r,��P���࣬��5%��,��Կ��x��,��P��ܶ࣬�t�x�P��^��ı�,�,��O��pС��·��pʧ��

�ڶ��N��c��·�,��ڱ��Ƞ��η��,��ͳ��´��̖��Ȼ��(j��)�P��,��Q��Ƿ��и��~ֱ݆��,��P��С��Ͳ��и�,��P��ܴ�,��Ͱ��Q��H,��,��(j��)��ns��иʽ��и��~ֱ݆��,��c��Ƞ��η��,��x�P��^С�ı�,��x�Õr��Еr횿��]��a��ˇҪ��,��x�ò�ͬ�Π�Q-H��,��
��
5��̖�_��,��ˮ�û�ݔ�ͽ��|��W��|��ˮ�ı�,��ٵ��P�aƷĿ䛻�ӱ��ϣ��(j��)ԓ��̖��ܱ��M��У��,��c�Ƿ��ԓ�Ã�(y��u)�ȹ��^(q��),��ЧNPSH�Ƿ��ڣ�NPSH��Ҳ�ɷ��^��NPSHУ�Ď׺ΰ��b�߶�,��
��
6,��ݔ��ճ�ȴ��20mm2/s��Һ�w�ã��ܶȴ��1000kg/m3��һ��Ҫ��ˮ��Q��ԓճ�ȣ��ԓ�ܶ��£��,��؄eҪ��ܺ�ݔ�빦��M��J��Ӌ��^��,��

7��_��õ��_��(sh��)�͂��ʣ�

��\�D�ı�,��һ��ֻ��һ�_,��һ�_��c��(li��n)��ă��_С��ஔ��ָ�P��,��ͬ��,��Ч�ʸ��С�ã��ʏĹ�(ji��)�ܽǶ��v��xһ�_��,��Ã��_С��,��r�r��ɿ��]��_�ò�(li��n)��ܴ�,��һ�_��_��,��Ҫ��50%�Ă��ʴ��ͱã��ɸă��_�^С�ıù��,��_��ã��_��,��

��ĳЩ��ͱã��x��70%��Ҫ��ıò�(li��n)��,��Â��ñ�,��һ�_�Ùz�ޕr��һ�_��Ȼ�Г��a��70%��ݔ��,��24С�r�B�m(x��)��ͣ�\�D�ı�,��_�ã�һ�_�\�D,��һ�_��,��һ�_�S�ޡ�

8,��һ��r��,��͑��ύ��“�x�õĻ��l��”��˾�o��x�ͻ��]��õıîaƷ,��OӋԺ��OӋ�b��O��r,��õ��̖�ѽ��_��OӋԺҪ��,��

9,��_��õ��_��(sh��)�͂��ʣ�

��\�D�ıã�һ��ֻ��һ�_,��һ�_��c��(li��n)��ă��_С��ஔ,��ָ�P�̡��ͬ��,��Ч�ʸ��С��,��ʏĹ�(ji��)�ܽǶ��v��xһ�_��ã��Ã��_С��,��r�r,��ɿ��]��_�ò�(li��n)��ܴ�һ�_��_��,��

��Ҫ��50%�Ă��ʴ��ͱ�,��ɸă��_�^С�ıù��_��ã��̧��,��

��ĳЩ��ͱ�,��x��70%��Ҫ��ıò�(li��n)��Â��ñ�,��һ�_�Ùz�ޕr,��һ̧��Ȼ�Г��a��70%��ݔ�͡�

��24С�r�B�m(x��)��ͣ�\�D�ı�,��_��,��\�D��һ�_��,��һ�_�S��,��

����D�d��ǳ��ڂ��f��Ϣ֮Ŀ�ġ��Ё�Դ��ע�e�`��ַ��ĺϷ��,��Ո��߳֙��C��c��W(w��ng)(li��n)ϵ,��҂��r��h��,��x�x,��