CN-224228836-U - High-pressure gas countercurrent protection device for preventing compressor from stopping

Abstract

The utility model discloses a protection device for preventing high-pressure gas from countercurrent when a compressor is stopped, which comprises a compressor main body, wherein an exhaust port and an exhaust cavity which are connected in a penetrating way are arranged in the compressor main body, a one-way sealing seat is arranged in the exhaust cavity, one end of the one-way sealing seat is slidably provided with a connecting bolt, the end part of the connecting bolt is provided with a sealing pad for sealing the exhaust port, the sealing pad and the one-way sealing seat are sleeved with the same attaching spring for preventing the high-pressure gas of the compressor from reversing, the sealing pad comprises a connecting seat which is connected with the connecting bolt in a penetrating way, one side of the connecting seat is provided with a penetrating pad which is attached with the exhaust port, and one side of the penetrating pad is provided with a backing plate which is attached with the exhaust cavity for sealing the exhaust port. The compressor protection device can efficiently exhaust high-pressure gas when the compressor works, and prevent external gas from flowing back when the compressor is stopped.

Inventors

• YU GUANGHUA
• DONG JIAXIN

Assignees

• 浙江商业机械厂有限公司

Dates

Publication Date

20260512

Application Date

20250626

Claims (7)

1. 1. The utility model provides a prevent high-pressure gas protection device against current when compressor shut down, includes compressor main part (1), and the inside of compressor main part (1) is provided with through connection's gas vent (2) and exhaust chamber (3), its characterized in that: A one-way sealing seat (5) is arranged in the exhaust cavity (3), one end of the one-way sealing seat (5) is slidably provided with a connecting bolt (9), and the end part of the connecting bolt (9) is provided with a sealing gasket (4) for sealing the exhaust port (2); the same attaching spring (12) is sleeved between the sealing gasket (4) and the unidirectional sealing seat (5) and is used for the anti-reverse protection of high-pressure gas of the compressor.
2. 2. The protection device for preventing the backflow of high-pressure gas when the compressor is stopped according to claim 1, wherein the sealing gasket (4) comprises a connecting seat (6) connected with the connecting bolt (9) in a penetrating way, one side of the connecting seat (6) is provided with a penetrating gasket (7) attached to the exhaust port (2), and one side of the penetrating gasket (7) is provided with a backing plate (8) attached to the exhaust cavity (3) for sealing the exhaust port (2).
3. 3. The protection device for preventing high-pressure gas countercurrent when the compressor is stopped according to claim 2, wherein the penetrating pad (7) is of a table-type structure, the penetrating pad (7) and the exhaust port (2) are in penetrating distribution, a jointing cover (14) is arranged between the penetrating pad (7) and the base plate (8), the opening end of the jointing cover (14) is arranged on the same side as the connecting seat (6), and a plurality of limiting strips (15) are arranged on the inner side of the jointing cover (14) and used for preventing the sealing pad (4) from loosening and limiting the exhaust port (2).
4. 4. The protection device for preventing the backflow of high-pressure gas during the shutdown of a compressor according to claim 2, characterized in that one end of the connecting bolt (9) is provided with a threaded rod (21) penetrating through the sealing gasket (4), a hoop (22) limiting the backing plate (8) is sleeved outside the connecting bolt (9), and the connection firmness between the sealing gasket (4) and the connecting bolt (9) is improved.
5. 5. The protection device for preventing high-pressure gas countercurrent when the compressor is stopped according to claim 1, wherein the unidirectional sealing seat (5) comprises a fixed pipe (10) fixedly arranged in the exhaust cavity (3), the connecting bolt (9) penetrates through the fixed pipe (10), a through hole (13) is formed in the fixed pipe (10), and a reset spring (11) connected with the connecting bolt (9) is arranged in the fixed pipe (10) and used for elastically resetting the connecting bolt (9).
6. 6. The protection device for preventing the backflow of high-pressure gas during the shutdown of a compressor according to claim 5, characterized in that a positioning block (16) is arranged in the middle of the connecting bolt (9), a through groove (18) for sliding the positioning block (16) is formed in the fixing tube (10), and the same sealing ring (17) is arranged between the fixing tube (10) and the connecting bolt (9).
7. 7. The protection device for preventing high-pressure gas from flowing reversely when the compressor is stopped as claimed in claim 6, wherein the fixing tube (10) is provided with a notch for the connecting bolt (9) to penetrate, the inside of the fixing tube (10) is provided with a pressure equalizing cavity (19), and a through hole (20) is arranged between the pressure equalizing cavity (19) and the notch to be connected in a penetrating way for stable sealing when the protection device is stopped.

Description

High-pressure gas countercurrent protection device for preventing compressor from stopping Technical Field The utility model relates to a compressor protection device, in particular to a high-pressure gas countercurrent protection device for preventing a compressor from being stopped. Background A compressor (compressor) is a driven fluid machine that lifts low pressure gas to high pressure gas, and is the heart of a refrigeration system. The refrigerating cycle is powered by sucking low-temperature low-pressure refrigerant gas from the air suction pipe, compressing the refrigerant gas, and discharging high-temperature high-pressure refrigerant gas to the air discharge pipe. On one hand, the high-pressure gas after being compressed is discharged in time, so that the internal pressure of a cylinder can be reduced, the overload damage of mechanical parts caused by continuous accumulation of the pressure is avoided, and meanwhile, the high-pressure gas is conveyed to a subsequent process flow to realize energy conversion and utilization, for example, the refrigeration cycle is completed after the high-pressure gas refrigerant in a refrigeration system is condensed and throttled; on the other hand, the reasonable exhaust design can optimize the energy efficiency performance of the compressor and reduce the idle work loss. When the compressor is stopped, the residual high-pressure gas in the system can generate a reverse flow trend, so that the external low-pressure gas is reversely flushed into the compressor, the deformation of the valve plate is caused, the tightness of the sealing element is influenced, and abnormal vibration of equipment is caused. For the above reasons, it is necessary to design a high-pressure gas reverse flow protection device capable of ensuring efficient exhaust of the compressor operation and preventing reverse flow of the compressor shutdown gas. Disclosure of utility model In view of the above problems in the prior art, the present utility model aims to provide a high-pressure gas backflow prevention device when a compressor is stopped, so that the high-pressure gas backflow prevention device can efficiently exhaust high-pressure gas and prevent gas backflow. In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a prevent high-pressure gas protection device against current when compressor shut down, includes the compressor main part, and the inside of compressor main part is provided with through connection's gas vent and exhaust chamber, the inside in exhaust chamber is provided with one-way seal seat, one end of one-way seal seat is smooth to be equipped with the connecting bolt, the tip of connecting bolt is provided with the sealed pad to the gas vent, the cover is equipped with same laminating spring between sealed pad and one-way seal seat for the reverse protection of compressor high-pressure gas. Preferably, the sealing gasket comprises a connecting seat connected with the connecting bolt in a penetrating manner, a penetrating gasket attached to the exhaust port is arranged on one side of the connecting seat, a base plate attached to the exhaust cavity is arranged on one side of the penetrating gasket, and the sealing gasket is used for sealing the exhaust port. Preferably, the penetrating pad is of a table-type structure, the penetrating pad and the exhaust port are in penetrating distribution, a bonding cover is arranged between the penetrating pad and the base plate, the opening end of the bonding cover is arranged on the same side of the connecting seat, and a plurality of limiting strips are arranged on the inner side of the bonding cover and used for preventing the sealing pad from loosening and limiting the exhaust port. Preferably, one end of the connecting bolt is provided with a threaded rod penetrating through the sealing gasket, a hoop for limiting the base plate is sleeved outside the connecting bolt, and the connection firmness of the sealing gasket and the connecting bolt is improved. Preferably, the unidirectional sealing seat comprises a fixed pipe fixedly arranged in the exhaust cavity, the connecting bolt penetrates through the fixed pipe, a through hole is formed in the fixed pipe, and a reset spring connected with the connecting bolt is arranged in the fixed pipe and used for elastically resetting the connecting bolt. Preferably, a positioning block is arranged in the middle of the connecting bolt, a through groove for the positioning block to slide is formed in the fixing tube, and the same sealing ring is arranged between the fixing tube and the connecting bolt. Preferably, the fixing tube is provided with a notch for the connecting bolt to penetrate, the inside of the fixing tube is provided with a pressure equalizing cavity, and a through hole is formed between the pressure equalizing cavity and the notch for through connection, so that the protection device is stably sealed when th