1. standardization: the drawings adopt national standards or industry standards to realize the unification and standardization of drawings.

2. Accuracy: The drawings should accurately reflect the design requirements, such as size, position and shape. To ensure the normal operation of the equipment.

3. Readability: Drawings should be clear and easy to understand. Reasonable use of scale, labels and symbols is a necessary condition to ensure the readability of drawings.

4. Integrity: The drawings shall contain all necessary information, such as size, location, materials, processing technology, etc. To ensure that the equipment can be completely manufactured.

5. Consistency: The drawings shall meet the design requirements of the whole project and be coordinated with other drawings and technical documents to ensure that the device can be coordinated with other parts.

6. Operability: The drawings should be directly operated, such as machining, assembly and installation.

The above are several aspects of technical requirements of two-dimensional engineering drawing of spray cooling device. These requirements are to ensure that the drawings can accurately reflect the design requirements and have an important impact on the manufacture and operation of the device.

In practice, we should pay attention to the following points:

1. Clear marks: size, position, symbol, etc. It should be clearly marked without ambiguity.

2. Reasonable proportion: according to the size and content of the drawings, choose the appropriate proportion to ensure the readability of the drawings.

3. Symbol unification: adopt unified symbols to ensure the standardization of drawings.

4. Details in place: Pay attention to the details in the drawings, such as chamfering, aperture, thread, etc. To ensure the normal operation of the equipment.

5. Coordination with other technical documents: drawings need to be coordinated with other technical documents, such as assembly drawings and process documents, to ensure the coordination of equipment.

The above are the requirements and precautions of two-dimensional engineering drawing technology of spray cooling device. In actual operation, these requirements and precautions need to be carefully observed to ensure the accuracy and readability of drawings, which has an important impact on the manufacture and operation of equipment.